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Summary of Significant Accounting Policies (Policies) | 12 Months Ended
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Apr. 30, 2013
Management's Estimates and Assumptions | Management’s Estimates and Assumptions Preparation of our consolidated financial statements in accordance with U.S. GAAP requires management to make certain estimates and assumptions. These estimates and assumptions affect the accounting for and recognition and disclosure of assets, liabilities, equity, revenues and expenses. We must make these estimates and assumptions because certain information that we use is dependent on future events, cannot be calculated with a high degree of precision given the available data or simply cannot be readily calculated. In the opinion of management, these consolidated financial statements include all adjustments, which include normal recurring and nonrecurring adjustments, necessary for a fair presentation of the financial position, results of operations, and cash flows for the periods presented. Summarized below are the estimates and assumptions that we consider to be significant in the preparation of our consolidated financial statements. Landfill Development Costs We estimate the total cost to develop each of our landfill sites to its remaining permitted and expansion capacity. This estimate includes such costs as landfill liner material and installation, excavation for airspace, landfill leachate collection systems, landfill gas collection systems, environmental monitoring equipment for groundwater and landfill gas, directly related engineering, capitalized interest, on-site road construction and other capital infrastructure costs. Additionally, landfill development includes all land purchases for landfill footprint and required landfill buffer property. The projection of these landfill costs is dependent, in part, on future events. The remaining amortizable basis of each landfill includes costs to develop a site to its remaining permitted and expansion capacity and includes amounts previously expended and capitalized, net of accumulated airspace amortization, and projections of future purchase and development costs. The interest capitalization rate is based on our weighted average interest rate incurred on borrowings outstanding during the period. Interest capitalized for the fiscal years ended April 30, 2013, 2012 and 2011 was $368, $407 and $1,078, respectively. Under life-cycle accounting, all costs related to acquisition and construction of landfill sites are capitalized and charged to expense based on tonnage placed into each site. Landfill permitting, acquisition and preparation costs are amortized on the units-of-consumption method as landfill airspace is consumed. In determining the amortization rate for these landfills, preparation costs include the total estimated costs to complete construction of the landfills’ permitted and expansion capacity. We apply the following guidelines in determining a landfill’s remaining permitted and expansion airspace: Remaining Permitted Airspace. Our engineers, in consultation with third-party engineering consultants and surveyors, are responsible for determining remaining permitted airspace at our landfills. The remaining permitted airspace is determined by an annual survey, which is then used to compare the existing landfill topography to the expected final landfill topography. Expansion Airspace. We currently include unpermitted expansion airspace in our estimate of remaining permitted and expansion airspace in certain circumstances. To be considered expansion airspace all of the following criteria must be met:
| • |  | we control the land on which the expansion is sought;
| • |  | all technical siting criteria have been met or a variance has been obtained or is reasonably expected to be obtained;
| • |  | we have not identified any legal or political impediments which we believe will not be resolved in our favor;
| • |  | we are actively working on obtaining any necessary permits and we expect that all required permits will be received; and
| • |  | senior management has approved the project.
For unpermitted airspace to be initially included in our estimate of remaining permitted and expansion airspace, the expansion effort must meet all of the criteria listed above. These criteria are evaluated annually by our engineers, accountants, lawyers, managers and others to identify potential obstacles to obtaining the permits. Once the remaining permitted and expansion airspace is determined in cubic yards, an airspace utilization factor (the “AUF”) is established to calculate the remaining permitted and expansion capacity in tons. The AUF is established using the measured density obtained from previous annual surveys. When we include the expansion airspace in our calculation of remaining permitted and expansion airspace, we include the projected costs for development, as well as the projected asset retirement costs related to capping, closure and post-closure of the expansion airspace in the amortization basis of the landfill. After determining the costs and the remaining permitted and expansion capacity at each of our landfills, we determine the per ton rates that will be expensed as waste is received and deposited at the landfill by dividing the costs by the corresponding number of tons. We calculate per ton amortization rates for assets associated with each capping event, for assets related to closure and post-closure activities and for all other costs capitalized or to be capitalized in the future for each landfill. These rates per ton are updated annually, or more frequently, as significant facts change. Landfill Capping, Closure and Post-Closure Costs The following is a description of our asset retirement activities: Capping Costs. Capping activities include the installation of liners, drainage, compacted soil layers and topsoil over areas of a landfill where total airspace has been consumed and waste is no longer being received. Capping activities occur throughout the life of the landfill. Our engineering personnel estimate the cost for each capping event based on the acreage to be capped and the capping materials and activities required. The estimates also consider when these costs would actually be paid and factor in inflation and discount rates. The engineers then quantify the landfill capacity associated with each capping event and the costs for each event are amortized over that capacity as waste is received at the landfill. Closure and Post-Closure Costs. Closure and post-closure costs represent future estimated costs related to monitoring and maintenance of a solid waste landfill, after a landfill facility ceases to accept waste and closes. We estimate, based on input from our engineers, lawyers, accounting personnel and consultants, our future cost requirements for closure and post-closure monitoring and maintenance based on our interpretation of the technical standards of the Subtitle D regulations and the air emissions standards under the Clean Air Act of 1970, as amended, as they are being applied on a state-by-state basis. Closure and post-closure accruals for the cost of monitoring and maintenance include site inspection, groundwater monitoring, leachate management, methane gas control and recovery, and operation and maintenance costs to be incurred for a period which is generally for a term of 30 years after final closure of a landfill. In determining estimated future closure and post-closure costs, we consider costs associated with permitted and permittable airspace. Our estimate of costs to discharge capping, closure and post-closure asset retirement obligations for landfills are developed in today’s dollars. These costs are then inflated to the period of performance using an estimate of inflation which is updated annually (2.7% for fiscal years 2013 and 2012, respectively). Capping, closure and post-closure liabilities are discounted using the credit adjusted risk-free rate in effect at the time the obligation is incurred. The weighted average rate applicable to our asset retirement obligations at April 30, 2013 is between 8.5% and 10.0%, the range of the credit adjusted risk free rates effective since the adoption of guidance associated with asset retirement obligations in fiscal year 2004. Accretion expense is necessary to increase the accrued capping, closure and post-closure liabilities to the future anticipated obligation. To accomplish this, we accrete our capping, closure and post-closure accrual balances using the same credit-adjusted risk-free rate that was used to calculate the recorded liability. Accretion expense on recorded landfill liabilities is recorded to cost of operations from the time the liability is recognized until the costs are paid. Accretion expense on recorded landfill liabilities amounted to $3,538, $3,341 and $3,193 in fiscal years 2013, 2012 and 2011, respectively. We provide for the accrual and amortization of estimated future obligations for closure and post-closure based on tonnage placed into each site. With regards to capping, the liability is recognized and these costs are amortized based on the airspace related to the specific capping event. We operate in states which require a certain portion of landfill capping, closure and post-closure obligations to be secured by financial assurance, which may take the form of surety bonds, letters of credit and restricted cash. Surety bonds securing closure and post-closure obligations at April 30, 2013 and 2012 totaled $128,551 and $124,600, respectively. Letters of credit securing closure and post-closure obligations at April 30, 2013 and 2012 totaled $1,752. Restricted cash securing closure and post-closure obligations is disclosed in Note 5. Landfill Accounting-Landfill Operating Lease Contracts We entered into three landfill operation and management agreements in fiscal year 2004 and one landfill operation and management agreement in fiscal year 2006. These agreements are long-term landfill operating contracts with government bodies whereby we receive tipping revenue, pay normal operating expenses and assume future capping, closure and post-closure liabilities. The government body retains ownership of the landfill. There is no bargain purchase option and title to the property does not pass to us at the end of the lease term. We allocate the consideration paid to the landfill airspace rights and underlying land lease based on the relative fair values. In addition to up-front or one-time payments, the landfill operating agreements require us to make future minimum rental payments, including success/expansion fees, other direct costs and capping, closure and post closure costs. The value of all future minimum lease payments is amortized and charged to cost of operations over the life of the contract. We amortize the consideration allocated to airspace rights as airspace is utilized on a units-of-consumption basis and such amortization is charged to cost of operations as airspace is consumed (e.g., as tons are placed into the landfill). The underlying value of the land lease is amortized to cost of operations on a straight-line basis over the estimated life of the operating agreement. Environmental Remediation Liabilities We have recorded environmental liabilities representing our estimate of the most likely outcome of the matters for which we have determined that a liability is probable. These liabilities include potentially responsible party investigations, settlements, certain legal and consultant fees, as well as costs directly associated with site investigation and clean up, such as materials and incremental internal costs directly related to the remedy. We provide for expenses associated with environmental remediation obligations when such amounts are probable and can be reasonably estimated. We estimate costs required to remediate sites where it is probable that a liability has been incurred based on site-specific facts and circumstances. Estimates of the cost for the likely remedy are developed using third-party environmental engineers or other service providers. Where we believe that both the amount of a particular environmental remediation liability and timing of payments are reliably determinable, we inflate the cost in current dollars until the expected time of payment and discount the cost to present value. See Note 11 for disclosure over environmental remediation liabilities. Goodwill and Other Intangibles We do not amortize goodwill. We annually assess goodwill impairment at the end of the fourth quarter of our fiscal year, or more frequently if events or circumstances indicate that impairment may exist. We assess whether a goodwill impairment exists using both qualitative and quantitative assessments. Our qualitative assessment involves determining whether events or circumstances exist that indicate it is more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill. If based on this qualitative assessment we determine it is not more likely than not that the fair value of a reporting unit is less than its carrying amount, we will not perform a quantitative assessment. If the qualitative assessment indicates that it is more likely than not that the fair value of a reporting unit is less than its carrying amount, or if we elect not to perform a qualitative assessment, we perform a quantitative assessment, or two-step impairment test, to determine whether goodwill impairment exists at the reporting unit. In the first step of testing for goodwill impairment, we estimate the fair value of each reporting unit, which we have determined to be our geographic operating segments, and our Recycling segment, and compare the fair value with the carrying value of the net assets of each reporting unit. If the fair value is less than its carrying value, then we would perform a second step and determine the fair value of the goodwill. In this second step, the fair value of goodwill is determined by deducting the fair value of a reporting unit’s identifiable assets and liabilities from the fair value of the reporting unit as a whole, as if that reporting unit had just been acquired and the purchase price were being initially allocated. If the fair value of the goodwill is less than its carrying value for a reporting unit, an impairment charge would be recorded to earnings. To determine the fair value of each of our reporting units as a whole we use discounted cash flow analyses, which require significant assumptions and estimates about the future operations of each reporting unit. Significant judgments inherent in this analysis include the determination of appropriate discount rates, the amount and timing of expected future cash flows and growth rates. The cash flows employed in our discounted cash flow analyses are based on financial forecasts developed internally by management. Our discount rate assumptions are based on an assessment of our risk adjusted discount rate, applicable for each reporting unit. In assessing the reasonableness of our determined fair values of our reporting units, we evaluate our results against our current market capitalization. In addition to an annual goodwill impairment assessment, we would evaluate a reporting unit for impairment if events or circumstances change between annual tests indicating a possible impairment. Examples of such events or circumstances include the following:
| • |  | a significant adverse change in legal status or in the business climate;
| • |  | an adverse action or assessment by a regulator;
| • |  | a more likely than not expectation that a segment or a significant portion thereof will be sold; or
| • |  | the testing for recoverability of a significant asset group within the segment.
We elected not to perform a qualitative analysis as part of our annual goodwill impairment test for fiscal year 2013. We incurred no goodwill impairment in fiscal years 2013, 2012 or 2011 as a result of our annual fourth quarter goodwill impairment test. However, there can be no assurance that goodwill will not be impaired at any time in the future. See Note 7 for disclosure over goodwill. Covenants not to compete and customer lists are amortized based on the economic benefit provided or the straight-line method over their estimated useful lives, typically no more than 10 years. See Note 7 for disclosure over intangible assets. Recovery of Long-Lived Assets We continually assess whether events or changes in circumstances have occurred that may warrant revision of the estimated useful lives of our long-lived assets (other than goodwill) or whether the remaining balances of those assets should be evaluated for possible impairment. Long-lived assets include, for example, capitalized landfill costs, other property and equipment, and identifiable intangible assets. Events or changes in circumstances that may indicate that an asset may be impaired include the following:
| • |  | a significant decrease in the market price of an asset or asset group;
| • |  | a significant adverse change in the extent or manner in which an asset or asset group is being used or in its physical condition;
| • |  | a significant adverse change in legal factors or in the business climate that could affect the value of an asset or asset group, including an adverse action or assessment by a regulator;
| • |  | an accumulation of costs significantly in excess of the amount originally expected for the acquisition or construction of a long-lived asset;
| • |  | a current period operating or cash flow loss combined with a history of operating or cash flow losses or a projection or forecast that demonstrates continuing losses associated with the use of a long-lived asset or asset group;
| • |  | a current expectation that, more likely than not, a long-lived asset or asset group will be sold or otherwise disposed of significantly before the end of its previously estimated useful life; or
| • |  | an impairment of goodwill at a reporting unit.
There are certain indicators listed above that require significant judgment and understanding of the waste industry when applied to landfill development or expansion. For example, a regulator may initially deny a landfill expansion permit application although the expansion permit is ultimately granted. In addition, management may periodically divert waste from one landfill to another to conserve remaining permitted landfill airspace. Therefore, certain events could occur in the ordinary course of business and not necessarily be considered indicators of impairment due to the unique nature of the waste industry. If an impairment indicator occurs, we perform a test of recoverability by comparing the carrying value of the asset or asset group to its undiscounted expected future cash flows. We group our long-lived assets for this purpose at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets or asset groups. If the carrying values are in excess of undiscounted expected future cash flows, we measure any impairment by comparing the fair value of the asset or asset group to its carrying value. To determine fair value, we use discounted cash flow analyses and estimates about the future cash flows of the asset or asset group. This analysis includes a determination of an appropriate discount rate, the amount and timing of expected future cash flows and growth rates. The cash flows employed in our discounted cash flow analyses are typically based on financial forecasts developed internally by management. The discount rate used is commensurate with the risks involved. We may also rely on third party valuations and or information available regarding the market value for similar assets. If the fair value of an asset or asset group is determined to be less than the carrying amount of the asset or asset group, impairment in the amount of the difference is recorded in the period that the impairment occurs. Estimating future cash flows requires significant judgment and projections may vary from the cash flows eventually realized. In the fourth quarter of fiscal year 2013, we initiated a plan to dispose of KTI Bio Fuels, Inc. (“Bio Fuels”), a construction and demolition material processing facility located in Lewiston, Maine, and as a result, the assets associated with Bio Fuels were classified as held-for-sale and the results of operations were recorded as loss from discontinued operations. Assets of the disposal group classified as held-for-sale include certain inventory and plant and equipment. We recognized a $3,261 charge associated with the adjustment of the disposal group to fair value as a loss from discontinued operations. The impairment was measured based on the asset group’s highest and best use using an in-exchange valuation premise under the market approach, utilizing the estimated purchase consideration of the asset group and consideration of costs to be incurred to sell. There are inherent judgments and estimates used in determining impairment charges and the actual sale of Bio Fuels may result in the recognition of an additional gain or loss. See Note 18 for further disclosure. In the fourth quarter of fiscal year 2012, we entered into negotiations regarding the sale of Maine Energy Recovery Company LP (“Maine Energy”). Based on the proposed purchase consideration, we reviewed the asset group for impairment and recorded a $40,746 impairment charge to the asset group within the Eastern region segment. The impairment was measured based on the asset group’s highest and best use under the market approach, utilizing the discounted present cash flows associated with the purchase consideration of the facility, adjusted for costs to demolish the facility. We used a discount rate of 3.5%, which approximates the buyer’s borrowing rate. In the first quarter of fiscal year 2013, we executed a purchase and sale agreement to sell the real property of Maine Energy to the City of Biddeford, Maine. In the third quarter of fiscal year 2013, we closed and initiated the decommissioning process of the facility. See Note 18 for further disclosure. In the fourth quarter of fiscal year 2011, we recorded an impairment charge of $3,654 related to a recycling processing facility. Accounts Receivable – Trade, Net of Allowance for Doubtful Accounts Accounts receivable – trade represent receivables from customers for collection, transfer, recycling, disposal and other services. Our accounts receivable – trade are recorded when billed or when related revenue is earned, if earlier, and represent claims against third-parties that will be settled in cash. The carrying value of our accounts receivable – trade, net of allowance for doubtful accounts, represents their estimated net realizable value. Estimates are used in determining our allowance for doubtful accounts and are based on our historical collection experience, current trends, credit policy and a review of our accounts receivable – trade by aging category. Our reserve is evaluated and revised on a monthly basis. Past-due receivables are written off when deemed to be uncollectible. Self-Insurance Liabilities and Related Costs We are self insured for vehicles and workers’ compensation. Our maximum exposure in fiscal year 2013 under the workers’ compensation plan is $1,000 per individual event, after which reinsurance takes effect. Our maximum exposure under the automobile plan is $750 per individual event, after which reinsurance takes effect. The liability for unpaid claims and associated expenses, including incurred but not reported losses, is determined by management with the assistance of a third-party actuary and reflected in our consolidated balance sheet as an accrued liability. We use a third-party to track and evaluate actual claims experience for consistency with the data used in the annual actuarial valuation. The actuarially determined liability is calculated based on historical data, which considers both the frequency and settlement amount of claims. Our self insurance reserves totaled $11,362 and $12,024 at April 30, 2013 and 2012, respectively. Our estimated accruals for these liabilities could be significantly different than our ultimate obligations if variables such as the frequency or severity of future events differ significantly from our assumptions. Income Tax Accruals We use estimates to determine our provision for income taxes and related assets and liabilities and any valuation allowance recorded against our net deferred tax assets. Valuation allowances have been established for the possibility that tax benefits may not be realized for certain deferred tax assets. Deferred income taxes are recognized based on the expected future tax consequences of differences between the financial statement basis and the tax basis of assets and liabilities, calculated using currently enacted tax rates. We record net deferred tax assets to the extent we believe these assets will more likely than not be realized. In making this determination, we consider all available positive and negative evidence, including scheduled reversals of deferred tax liabilities, projected future taxable income, tax planning strategies and recent financial operations. In the event we determine that we would be able to realize our deferred income tax assets in the future in excess of their net recorded amount, we will make an adjustment to the valuation allowance which would reduce the provision for income taxes. We account for income tax uncertainties according to guidance on the recognition, de-recognition and measurement of potential tax benefits associated with tax positions. We recognize interest and penalties relating to income tax matters as a component of income tax expense. See Note 15 for disclosure related to income taxes. Loss Contingencies We are subject to various legal proceedings, claims and regulatory matters, the outcomes of which are subject to significant uncertainty. We determine whether to disclose or accrue for loss contingencies based on an assessment of whether the risk of loss is remote, reasonably possible or probable, and whether it can be reasonably estimated. We analyze our litigation and regulatory matters based on available information to assess the potential liabilities. Management’s assessment is developed based on an analysis of possible outcomes under various strategies. We accrue for loss contingencies when such amounts are probable and reasonably estimable. If a contingent liability is only reasonably possible, we will disclose the potential range of the loss, if estimable. We record losses related to contingencies in cost of operations or general and administration expenses, depending on the nature of the underlying transaction leading to the loss contingency. See Note 11 for disclosure over loss contingencies. Stock-Based Compensation All share-based compensation cost is measured at the grant date, based on the estimated fair value of the award, and is recognized as expense over the employee’s requisite service period. Stock-based compensation expense is based on the number of awards ultimately expected to vest and is therefore reduced for an estimate of the awards that are expected to be forfeited prior to vesting. The fair value of each stock option is estimated using a Black-Scholes option pricing model, which requires extensive use of accounting judgment and financial estimation, including estimates of the expected term option holders will retain their vested stock options before exercising them and the estimated volatility of our common stock price over the expected term. See Note 12 for disclosure over stock-based compensation.
Revenue Recognition | Revenue Recognition We recognize collection, transfer, recycling and disposal revenues as the services are provided. Certain customers are billed in advance and, accordingly, recognition of the related revenues is deferred until the services are provided. Revenues from the sale of recycled materials are recognized upon shipment. Rebates to certain municipalities based on sales of recyclable materials are recorded upon the sale of such recyclables to third-parties and are included as a reduction of revenues. Revenues for processing of recyclable materials are recognized when the related service is provided. Revenues from the brokerage of recycled materials are recognized on a net basis at the time of shipment.
Fair Value of Financial Instruments | Fair Value of Financial Instruments Our financial instruments include cash and cash equivalents, trade receivables, restricted trust and escrow accounts, interest rate derivatives, trade payables and long-term debt. Accounting standards include disclosure requirements around fair values used for certain financial instruments and establish a fair value hierarchy. The three-tier hierarchy prioritizes valuation inputs into three levels based on the extent to which inputs used in measuring fair value are observable in the market. Each fair value measurement is reported in one of three levels: Level 1, defined as quoted market prices in active markets for identical assets or liabilities; Level 2, defined as inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; and Level 3, defined as unobservable inputs that are not corroborated by market data. See Note 10 and Note 13 for fair value disclosure over long-term debt and financial instruments, respectively. See Derivatives and Hedging accounting policy below for fair value disclosure over interest rate derivatives.
Cash and Cash Equivalents | Cash and Cash Equivalents We consider all highly liquid investments purchased with original maturities of three months or less to be cash equivalents.
Inventory | Inventory Inventory includes secondary fibers, recyclables ready for sale and supplies and is stated at the lower of cost (first-in, first-out) or market. Inventory consisted of finished goods and supplies totaling $3,494 and $3,503 at April 30, 2013 and 2012, respectively.
Property, Plant and Equipment | Property, Plant and Equipment Property, plant and equipment is recorded at cost, less accumulated depreciation and amortization. We provide for depreciation and amortization using the straight-line method by charges to operations in amounts that allocate the cost of the assets over their estimated useful lives as follows:
Asset Classification |  | Estimated Useful Life |
Buildings |  |  | 25-30 years |
Machinery and equipment |  |  | 5-10 years |
Rolling stock |  |  | 5-10 years |
Containers |  |  | 5-12 years |
Furniture and Fixtures |  |  | 3-8 years |
Building improvements are amortized over a ten year period or the remaining life of the building, whichever is shorter. Machinery and equipment includes landfill equipment, balers and shredders with useful lives ranging from eight to ten years and maintenance equipment with useful lives ranging from five to ten years. Rolling stock includes collection vehicles, trailers and automobiles with useful lives ranging from five to ten years. Containers include steel containers in a variety of sizes generally ranging from two to 40 cubic yards with estimated useful lives of ten to twelve years. Containers also include residential carts and recycling bins with useful lives of five to ten years. The cost of maintenance and repairs is charged to operations as incurred. See Note 6 for disclosure over property, plant and equipment.
Investments in Unconsolidated Entities | Investments in Unconsolidated Entities Investments in unconsolidated entities over which we have significant influence over the investees’ operating and financing activities are accounted for under the equity method of accounting. Investments in affiliates in which we do not have the ability to exert significant influence over the investees’ operating and financing activities are accounted for under the cost method of accounting. The following table summarizes our equity and cost method investments as of April 30, 2013 and 2012:
|  | April 30, |
|  | 2013 |  |  | 2012 |
Equity method investments |  | $ | 3,766 |  |  | $ | 6,795 |
Cost method investments |  |  | 16,486 |  |  |  | 15,986 |
Investments in unconsolidated entities |  | $ | 20,252 |  |  | $ | 22,781 |
Equity Method Investments GreenFiber. In fiscal year 2001, we entered into a joint venture agreement with Louisiana-Pacific Corporation (“LP”) to combine our respective cellulose insulation businesses into a single operating entity, US GreenFiber LLC (“GreenFiber”). We account for our 50% membership interest in GreenFiber using the equity method of accounting. In fiscal year 2013, our loss on equity method investment associated with GreenFiber includes a $531 asset impairment charge recorded by GreenFiber as a result of GreenFiber’s annual long-lived asset impairment analysis that indicated the carrying value of one of their asset groups exceeded its fair value. In fiscal year 2012, our loss on equity method investment associated with GreenFiber includes a $5,090 goodwill impairment charge as GreenFiber performed a goodwill impairment analysis that indicated the carrying value of their reporting unit exceeded the fair value of their reporting unit and determined that the entire amount of their goodwill was impaired. Based on the goodwill impairment analysis performed by GreenFiber in fiscal year 2012, we determined that the book value of our investment in GreenFiber exceeded its fair value. The analysis calculated GreenFiber’s fair value based on the income approach using discounted cash flows taking into account current expectations for asset utilization, housing starts and the remaining useful life of related assets. We recorded a charge of $10,680 as impairment on equity method investment in fiscal year 2012. Our investment in GreenFiber amounted to $3,509 and $6,502 at April 30, 2013 and April 30, 2012, respectively. Summarized financial information for GreenFiber is as follows:
|  | April 30, 2013 |  |  | April 30, 2012 |
Current assets |  | $ | 16,644 |  |  | $ | 17,513 |
Noncurrent assets |  | $ | 28,139 |  |  | $ | 34,597 |
Current liabilities |  | $ | 19,247 |  |  | $ | 12,815 |
Noncurrent liabilities |  | $ | 1,227 |  |  | $ | 5,382 |
|  | Fiscal Year Ended April 30, |
|  | 2013 |  |  | 2012 |  |  | 2011 |
Revenue |  | $ | 67,062 |  |  | $ | 77,544 |  |  | $ | 84,903 |
Gross profit |  | $ | 12,502 |  |  | $ | 10,521 |  |  | $ | 14,025 |
Net loss |  | $ | (8,810) |  |  | $ | (20,003) |  |  | $ | (8,192) |
Effective December 1, 2011, we and LP each guaranteed up to $2,200 in support of GreenFiber’s modified and restated loan and security agreement. The guaranty could be drawn on upon an event of default and remained in place through, either, payment of the associated term loan under the security agreement or December 1, 2014, the extended term of GreenFiber’s modified and restated loan and security agreement. In March 2013, we received notification that GreenFiber’s term loan had been called for redemption due to an event of default. In the fourth quarter of fiscal year 2013, we recorded a liability of $2,073, included in other accrued liabilities, as an investment in GreenFiber based on our guaranty. In May 2013, we and LP each contributed $2,073 to GreenFiber to satisfy the guaranty and pay off the term loan in full. See Note 13 for disclosure over the fair value of the guaranty. As of April 30, 2013, we and LP are each committed to fund any liquidity shortfalls, if any such shortfalls exist, of GreenFiber related to covenant compliance as defined in GreenFiber’s modified and restated loan and security agreement. We have agreed to provide an equity contribution of our pro-rata share of funds, based on ownership percentage, sufficient to cure such shortfall. Tompkins. In May 2011, we finalized the terms of a joint venture agreement with FCR, LLC (“FCR”) to form Tompkins County Recycling LLC (“Tompkins”), a joint venture that operates a material recovery facility (“MRF”) located in Tompkins County, NY and processes and sells commodities delivered to the Tompkins MRF. We account for our 50% membership interest in Tompkins using the equity method of accounting. Our investment in Tompkins amounted to $257 and $293 at April 30, 2013 and 2012, respectively.
Accumulated Other Comprehensive Loss | Accumulated Other Comprehensive Loss Accumulated other comprehensive loss is a component of stockholders’ equity included in the accompanying consolidated balance sheets and includes, as applicable, the effective portion of changes in the fair value of our cash flow hedges that consist of commodity hedges and interest rate swaps, the changes in fair value of our marketable securities, as well as our portion of the changes in the fair value of GreenFiber’s commodity hedges. The components of accumulated other comprehensive loss for the fiscal years ended April 30, 2013 and 2012 are shown as follows:
|  | April 30, 2013 |  |  | April 30, 2012 |
|  | Gross |  |  | Tax |  |  | Net |  |  | Gross |  |  | Tax |  |  | Net |
Marketable securities |  | $ | 33 |  |  | $ | (6) |  |  | $ | 27 |  |  | $ | 11 |  |  | $ | (6) |  |  | $ | 5 |
GreenFiber’s commodity hedges |  |  | (370) |  |  |  | (249) |  |  |  | (619) |  |  |  | 661 |  |  |  | (249) |  |  |  | 412 |
Interest rate hedges |  |  | - |  |  |  | - |  |  |  | - |  |  |  | (2,369) |  |  |  | - |  |  |  | (2,369) |
Accumulated other comprehensive loss |  | $ | (337) |  |  | $ | (255) |  |  | $ | (592) |  |  | $ | (1,697) |  |  | $ | (255) |  |  | $ | (1,952) |
Earnings per Share | Earnings per Share Basic earnings per share is computed by dividing the net (loss) income from continuing operations attributable to common stockholders by the weighted average number of common shares outstanding during the period. Diluted earnings per share is calculated based on the combined weighted average number of common shares and potentially dilutive shares, which include, where appropriate, the assumed exercise of employee stock options, unvested restricted stock awards, unvested restricted stock units and unvested performance stock units. In computing diluted earnings per share, we utilize the treasury stock method.
Derivatives and Hedging | Derivatives and Hedging We account for derivatives and hedging activities in accordance with derivatives and hedging accounting guidance that establishes accounting and reporting standards requiring that every derivative instrument (including certain derivative instruments embedded in other contracts) be recorded in the balance sheet as either an asset or liability measured at its fair value. The guidance also requires that changes in the derivative’s fair value be recognized currently in earnings unless specific hedge accounting criteria are met. Our objective for utilizing derivative instruments is to reduce our exposure to fluctuations in cash flows due to changes in the commodity prices of recycled paper and adverse movements in interest rates. Our strategy to hedge against fluctuations in the commodity prices of recycled paper is to enter into hedges to mitigate the variability in cash flows generated from the sales of recycled paper at floating prices, resulting in a fixed price being received from these sales. We evaluate the hedges and ensure that these instruments qualify for hedge accounting pursuant to derivative and hedging guidance. Designated as effective cash flow hedges, the change in the fair value of these derivatives is recognized in other comprehensive income (loss) until the hedged item is settled and recognized as part of commodity revenue. If the price per short ton of the underlying commodity, as reported on the Official Board Market, is less than the contract price per short ton, we receive the difference between the average price and the contract price (multiplied by the notional tons) from the respective counter-party. If the price of the commodity exceeds the contract price per short ton, we pay the calculated difference to the counter-party. The fair values of the commodity hedges are obtained or derived from third-party counter-parties and are determined using valuation models with assumptions about market prices for commodities being based on those in underlying active markets. We were not party to any commodity hedge contracts as of April 30, 2013 and 2012. Our strategy to hedge against fluctuations in variable interest rates involves entering into interest rate derivative agreements to hedge against adverse movements in interest rates. In fiscal year 2012, we entered into two forward starting interest rate derivative agreements, which we initially entered into to hedge the interest rate risk associated with a forecasted financing transaction to redeem our previously outstanding 11% senior second lien notes (the “Second Lien Notes”) effective January 15, 2013. The total notional amount of these interest rate derivative agreements is $150,000. The agreements require us to receive interest based on changes in the London Interbank Offered Rate (“LIBOR”) index and pay interest at a rate of approximately 1.40%. The agreements mature on March 15, 2016. For interest rate derivatives deemed to be effective cash flow hedges, the change in fair value is recorded in our stockholders’ equity as a component of accumulated other comprehensive loss and included in interest expense at the same time as interest expense is affected by the hedged transaction. Differences paid or received over the life of the agreements are recorded as additions to or reductions of interest expense on the underlying debt. For interest rate derivatives deemed to be ineffective cash flow hedges, the change in fair value is recorded through earnings and included in loss on derivative instruments. In the second quarter of fiscal year 2013, we dedesignated both of the $75,000 forward starting interest rate derivative agreements and discontinued hedge accounting in accordance with Accounting Standards Codification (the “ASC”) 815-30 because the interest payments associated with the forecasted financing transaction were no longer deemed probable due to the redemption of our Second Lien Notes as discussed in Note 10. We reclassified a $3,626 loss from accumulated other comprehensive loss to earnings as a loss on derivative instruments in fiscal year 2013. The fair values of the interest rate derivatives are calculated based on the three month LIBOR yield curve that is observable at commonly quoted intervals for the full term of the swaps, adjusted by the credit risk of our counter-parties and us based on observable credit default swap rates. We recognize all derivatives on the balance sheet at fair value.
Concentrations of Credit Risk | Concentrations of Credit Risk Financial instruments that potentially subject us to concentrations of credit risk consist of cash, accounts receivable and derivative instruments. We maintain cash and cash equivalents with banks that at times exceed applicable insurance limits. We reduce our exposure to credit risk by maintaining such deposits with high quality financial institutions. Concentration of credit risk with respect to accounts receivable is limited because a large number of geographically diverse customers comprise our customer base, thus spreading the trade credit risk. At April 30, 2013 and 2012, no single group or customer represented greater than 5% of total accounts receivable-trade. We manage credit risk through credit evaluations, credit limits and monitoring procedures. We may also use credit insurance from time to time. We perform ongoing credit evaluations of our customers, but generally do not require collateral to support accounts receivable-trade. Credit risk related to derivative instruments results from the fact we enter into interest rate derivative and commodity price hedge agreements with various counterparties. However, we monitor our derivative positions by regularly evaluating positions and the creditworthiness of the counterparties.
Business Combinations | Business Combinations We acquire businesses in the waste industry, including non-hazardous waste collection, transfer station, material recovery facilities and disposal operations, as part of our growth strategy. Businesses are included in the consolidated financial statements from the date of acquisition. We recognize, separately from goodwill, the identifiable assets acquired and liabilities assumed at their estimated acquisition-date fair values. We measure and recognize goodwill as of the acquisition date as the excess of: (a) the aggregate of the fair value of consideration transferred, the fair value of any noncontrolling interest in the acquiree (if any) and the acquisition-date fair value of our previously held equity interest in the acquiree (if any), over (b) the fair value of net assets acquired and liabilities assumed. If information about facts and circumstances existing as of the acquisition date is incomplete by the end of the reporting period in which a business combination occurs, we will report provisional amounts for the items for which the accounting is incomplete. The measurement period ends once we receive the information we were seeking; however, this period will not extend beyond one year from the acquisition date. Any material adjustments recognized during the measurement period will be recognized retrospectively in the consolidated financial statements of the current period. All acquisition-related transaction and restructuring costs are to be expensed as incurred. See Note 4 for disclosure over business acquisitions.
Discontinued Operations | Discontinued Operations We analyze our operations that have been divested or classified as held-for-sale to determine if they qualify for discontinued operations accounting. Only operations that qualify as a component of an entity, as defined by the ASC, can be classified as a discontinued operation. In addition, only components where the cash flows of the component have been or will be eliminated from ongoing operations by the end of the assessment period and where we do not have a significant continuing involvement with the divested operations would qualify for discontinued operations accounting. See Note 18 for disclosure over discontinued operations.
Subsequent Events | Subsequent Events Except as disclosed, no material subsequent events have occurred since April 30, 2013 through the date of this filing that require recognition or disclosure in our current period consolidated financial statements.

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- Definition Disclosure of accounting policy for investments in financial assets, including marketable securities (debt and equity securities with readily determinable fair values), investments accounted for under the equity method and cost method, securities borrowed and loaned, and repurchase and resale agreements. For marketable securities, the disclosure may include the entity's accounting treatment for transfers between investment categories and how the fair values for such securities are determined. Also, for all investments, an entity may describe its policy for assessing, recognizing and measuring impairment of the investment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2,12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 107 -Paragraph 10, 11 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 325 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6872867&loc=d3e40691-111596 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 115 -Paragraph 7-16 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7491637&loc=d3e13433-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 2, 12 -Article 5 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS115-1/124-1 -Paragraph 7-18 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27290-111563 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section M + Details
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- Definition Disclosure of accounting policy for property, plant and equipment which may include the basis of such assets, depreciation methods used and estimated useful lives, the entity's capitalization policy, including its accounting treatment for costs incurred for repairs and maintenance activities, whether such asset balances include capitalized interest and the method by which such is calculated, how disposals of such assets are accounted for and how impairment of such assets is assessed and recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2155824 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 22 -Paragraph 12, 13 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 34 -Paragraph 8, 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -Subparagraph d -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Section C -Paragraph 5 -Chapter 9 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 144 -Paragraph 7 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Disclosure of accounting policy for revenue recognition. If the entity has different policies for different types of revenue transactions, the policy for each material type of transaction is generally disclosed. If a sales transaction has multiple element arrangements (for example, delivery of multiple products, services or the rights to use assets) the disclosure may indicate the accounting policy for each unit of accounting as well as how units of accounting are determined and valued. The disclosure may encompass important judgment as to appropriateness of principles related to recognition of revenue. The disclosure also may indicate the entity's treatment of any unearned or deferred revenue that arises from the transaction. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.B.Q1) -URI http://asc.fasb.org/extlink&oid=6600647&loc=d3e214044-122780 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 22 -Paragraph 8, 12, 13 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18823-107790 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18726-107790 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section B -Paragraph Question 1 + Details
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- Definition Disclosure of accounting policy for its capital stock transactions, including dividends and accumulated other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18726-107790 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 22 -Paragraph 8 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Disclosure of accounting policy for reporting subsequent events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 + Details
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- Definition Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 94-6 -Paragraph 11, 14 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6143-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6132-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6061-108592 + Details
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