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Fair Value of Financial Instruments | 12 Months Ended
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Apr. 30, 2014
Fair Value Disclosures [Abstract] |
Fair Value of Financial Instruments |
13. | FAIR VALUE OF FINANCIAL INSTRUMENTS
We use a three-tier fair value hierarchy to classify and disclose all assets and liabilities measured at fair value on a recurring basis, as well as assets and liabilities measured at fair value on a non-recurring basis, in periods subsequent to their initial measurement. These tiers include: 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. We use valuation techniques that maximize the use of market prices and observable inputs and minimize the use of unobservable inputs. In measuring the fair value of our financial assets and liabilities, we rely on market data or assumptions which we believe market participants would use in pricing an asset or a liability. Our financial instruments include cash and cash equivalents, accounts receivable-trade, restricted trust and escrow accounts, interest rate derivatives, trade payables and long-term debt. The carrying values of cash and cash equivalents, restricted cash, trade receivables and trade payables approximate their respective fair values. See Note 10 for disclosure over the fair value of debt. As of April 30, 2014, our financial assets and liabilities that are measured at fair value on a recurring basis include the following:
|  | Fair Value Measurement at April 30, 2014 Using: |
|  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Restricted assets |  | $ | 681 |  |  | $ | — |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Interest rate derivatives |  | $ | — |  |  | $ | 2,770 |  |  | $ | — |
As of April 30, 2013, our financial assets and liabilities that are measured at fair value on a recurring basis include the following:
|  | Fair Value Measurement at April 30, 2013 Using: |
|  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Restricted assets |  | $ | 545 |  |  | $ | — |  |  | $ | — |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Interest rate derivatives |  | $ | — |  |  | $ | 4,229 |  |  | $ | — |
As of April 30, 2014, our assets and liabilities that are measured at fair value on a non-recurring basis include the following:
|  | Fair Value Measurement at April 30, 2014 Using: |
|  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Asset group – CARES |  | $ | — |  |  | $ | — |  |  | $ | 650 |
As of April 30, 2014, our financial assets and liabilities recorded at fair value on a non-recurring basis include our assets related to CARES, a joint venture that owns and operates a water and leachate treatment facility for the natural gas drilling industry in Pennsylvania. The fair value of our remaining CARES asset group was measured using an in-exchange valuation premise under the market approach derived from quoted prices of similar assets, adjusted based on qualitative factors specific to the asset. As of April 30, 2013, our assets and liabilities that are measured at fair value on a non-recurring basis include the following:
|  | Fair Value Measurement at April 30, 2013 Using: |
|  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Asset group held-for-sale – Bio Fuels |  | $ | — |  |  | $ | — |  |  | $ | 61 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |
Guaranty |  | $ | — |  |  | $ | — |  |  | $ | 2,073 |
As of April 30, 2013, our financial assets and liabilities recorded at fair value on a non-recurring basis include our guaranty of GreenFiber’s modified and restated loan and security agreement and our assets related to BioFuels, a construction and demolition material processing facility located in Lewiston, Maine, which was classified as held-for-sale as of April 30, 2013. The fair value of our guaranty was determined based on the value of the contribution required to satisfy the guaranty and pay off the term loan in May 2013. The fair value of our BioFuels asset group 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.

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- Definition The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14064-108612 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13504-108611 + Details
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