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Description of Business and Summary of Significant Accounting Policies (Policies) | 12 Months Ended
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Mar. 31, 2013
Description of Business and Summary of Significant Accounting Policies |
Revenue Recognition | Revenue Recognition We recognize revenue when the four revenue recognition criteria are met, as follows: · Persuasive evidence of an arrangement exists — our customary practice is to obtain written evidence, typically in the form of a purchase order; · Delivery — when custody is transferred to our customers either upon shipment to or receipt at our customers’ locations, with no right of return or further obligations, such as installation or training; · The price is fixed or determinable — prices are typically fixed at the time the order is placed and no price protections or variables are offered; and · Collectability is reasonably assured — new and existing customers are subject to a credit review process and pre-payment may be required. Other revenues in the statements of income primarily consist of recalibration, installation, repairs, and shipping and handling.
Shipping and handling | Shipping and handling Payments by customers to us for shipping and handling costs are included in revenue on the statements of income, while our expense is included in cost of revenue. Shipping and handling for inventory and materials purchased by us is included as a component of inventory on the balance sheets, and in cost of revenue when the product is sold.
Accrued Warranty Expense | Accrued Warranty Expense We provide limited product warranty on our products and, accordingly, accrue an estimate of the related warranty expense at the time of sale.
Cash Equivalents | Cash Equivalents We classify time deposits and other investments that are highly liquid and have maturities of three months or less at the date of purchase as cash equivalents.
Accounts Receivable | Accounts Receivable We record trade accounts receivable at net realizable value. This value includes an appropriate allowance for estimated uncollectible accounts to reflect any loss anticipated on the trade accounts receivable balances and is charged to the provision for doubtful accounts. We calculate this allowance based on our history of write-offs, the level of past-due accounts based on the contractual terms of the receivables, and our relationships with, and the economic status of, our customers.
Concentration of Credit Risk | Concentration of Credit Risk Financial instruments that potentially subject us to concentrations of credit risk consist of accounts receivable. For the years ended March 31, 2013, 2012 and 2011, no individual customer represented more than 10% of our revenues and as of March 31, 2013, no individual customer represented more than 10% of our accounts receivable balance. Approximately 60% and 40% of our sales are to customers located in the United States and foreign countries, respectively.
Inventories | Inventories Inventories are stated at the lower of cost or market, based on standards using the first-in, first-out method (“FIFO”) to determine cost. We evaluate standard costs annually, unless circumstances necessitate a mid-year evaluation for specific items. Our work in process and finished goods inventory includes raw materials, labor and overhead, which are estimated based on trailing twelve months of expense and standard labor hours for each product. Our biological indicator inventory is tracked by lot number, thus it is generally based on actual hours. We monitor inventory cost compared to selling price in order to determine if a lower of cost or market reserve is necessary. At year end we perform a complete physical inventory observation. Throughout the year, we estimate and maintain an inventory reserve, as needed, for such matters as obsolete inventory, shrink and scrap.
Property, Plant and Equipment | Property, Plant and Equipment Property, plant and equipment are stated at cost. Repair and maintenance costs that do not improve service potential or extend economic life are expensed as incurred. Depreciation is recorded using the straight-line method over the estimated useful lives of our assets, which are reviewed periodically and generally have the following ranges: buildings: 40 years or less; manufacturing equipment: 7 years or less; and computer equipment: 3 years or less. Land is not depreciated and construction in progress is not depreciated until placed in service.
Goodwill and Intangible Assets | Goodwill and Intangible Assets We classify intangible assets into three categories: (1) intangible assets with definite lives subject to amortization, (2) intangible assets with indefinite lives not subject to amortization and (3) goodwill. We determine the useful lives of our identifiable intangible assets after considering the specific facts and circumstances related to each intangible asset. Factors we consider when determining useful lives include the contractual term of any agreement related to the asset, the historical performance of the asset, our long-term strategy for using the asset, any laws or other local regulations which could impact the useful life of the asset and other economic factors, including competition and specific market conditions. Intangible assets that are deemed to have definite lives are amortized, primarily on a straight-line basis, over their useful lives, generally ranging from three to sixteen years (See Note 5). When facts and circumstances indicate that the carrying value of definite-lived intangible assets may not be recoverable, management assesses the recoverability of the carrying value by preparing estimates of revenues and the resulting gross profit and cash flows. These estimated future cash flows are consistent with those we use in our internal planning. If the sum of the expected future cash flows (undiscounted and without interest charges) is less than the carrying amount, we recognize an impairment loss. The impairment loss recognized is the amount by which the carrying amount of the asset (or asset group) exceeds the fair value. We use a variety of methodologies to determine the fair value of these assets, including discounted cash flow models, which are consistent with the assumptions we believe hypothetical marketplace participants would use. We test intangible assets determined to have indefinite useful lives, including trademarks, franchise rights and goodwill, for impairment annually, or more frequently if events or circumstances indicate that assets might be impaired. We perform these annual impairment reviews as of the first day of our fourth fiscal quarter. We use a variety of methodologies in conducting impairment assessments of indefinite-lived intangible assets, including, but not limited to, discounted cash flow models, which are based on the assumptions we believe hypothetical marketplace participants would use. For indefinite-lived intangible assets, other than goodwill, if the carrying amount exceeds the fair value, an impairment charge is recognized in an amount equal to that excess. Prior to February 2012, certain marketing intangible assets, such as trade names, were determined to have an indefinite life and were not being amortized. In February 2012, management determined that in the future we may phase out the use of these marketing intangible assets. Accordingly, we began amortizing them on a straight-line basis over an estimated useful life of 10 years. We have the option to perform a qualitative assessment of indefinite-lived intangible assets, other than goodwill, prior to completing the impairment test described above. We must assess whether it is more likely than not that the fair value of the intangible asset is less than its carrying amount. If we conclude that this is the case, we must perform the testing described above. Otherwise, we do not need to perform any further assessment. We perform impairment tests of goodwill at our reporting unit level, which is one level below our operating segments. Our operating segments consist of our Instruments and Biological Indicators Divisions. These operating segments are consistent with the way management runs our business. Our Instruments operating segment is subdivided into smaller business units. These business units are also our reporting units. Goodwill is assigned to the reporting unit or units that benefit from the synergies arising from each business combination. The goodwill impairment test consists of a two-step process, if necessary. The first step is to compare the fair value of a reporting unit to its carrying value, including goodwill. We typically use discounted cash flow models to determine the fair value of a reporting unit. The assumptions used in these models are consistent with those we believe hypothetical marketplace participants would use. If the fair value of the reporting unit is less than its carrying value, the second step of the impairment test must be performed in order to determine the amount of impairment loss, if any. The second step compares the implied fair value of the reporting unit’s goodwill with the carrying amount of that goodwill. If the carrying amount of the reporting unit’s goodwill exceeds its implied fair value, an impairment charge is recognized in an amount equal to that excess. The loss recognized cannot exceed the carrying amount of goodwill. We have the option to perform a qualitative assessment of goodwill prior to completing the two-step process described above to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount, including goodwill and other intangible assets. If we conclude that this is the case, we must perform the two-step process. Otherwise, we will forego the two-step process and do not need to perform any further testing.
Research & Development Costs | Research & Development Costs Internal costs related to research and development efforts on existing or potential products are expensed as incurred. The costs of intangible assets that are purchased from others for use in research and development activities, and also have alternative future benefit, are capitalized and amortized over their expected useful life. Under certain agreements, we may receive advance payments from customers to perform research and development on their behalf. These payments are recovered by the customer through lower product prices. In these circumstances, we initially record deferred revenue, included in other accrued expenses on the accompanying balance sheets. As product is sold, this liability will be reduced through revenues on the statements of income.
Stock-based Compensation | Stock-based Compensation Equity classified stock-based compensation is measured at fair value, based on the closing stock price at grant date, using the Black-Scholes option-pricing model. We recognize expense on a straight-line basis over the service period, net of an estimated forfeiture rate, resulting in a compensation cost for only those shares expected to vest. We do not have any liability classified stock-based compensation. We allocate stock-based compensation expense to cost of sales and general and administrative expense in the accompanying statements of income.
Income Taxes | Income Taxes We recognize deferred income tax assets and liabilities for the expected future tax consequences of temporary differences between the income tax and financial reporting carrying amount of our assets and liabilities. We monitor our deferred tax assets and evaluate the need for a valuation allowance based on the estimate of the amount of such deferred tax assets that we believe do not meet the more-likely-than-not recognition criteria. We also evaluate whether we have any uncertain tax positions and would record a reserve if we believe it is more-likely-than-not our position would not prevail with the applicable tax authorities. We have not recorded a valuation allowance or a reserve for uncertain tax positions. Any penalties and interest are included in other expense on the statements of income.
Fair Value of Measurements | Fair Value of Measurements Our financial instruments include cash and cash equivalents, accounts receivable, accounts payable, accrued liabilities, and long-term debt. The carrying value of these financial instruments is considered to be representative of their fair value due to the short maturity of these instruments. Our debt has a variable interest rate, so the carrying amount approximates fair value because interest rates on these instruments approximate the interest rate on debt with similar terms available to us.
Recently Issued Accounting Pronouncements | Recently Issued Accounting Pronouncements In July 2012, the Financial Accounting Standards Board (“FASB’) issued Accounting Standards Update (“ASU”) No. 2012-02, Testing Indefinite-Lived Intangible Assets for Impairment. We do not have indefinite-lived intangible assets; as a result, the adoption of this standard did not have an impact on our financial statements and disclosures. In October 2012, the FASB issued ASU 2012-04, Technical Corrections and Improvements. This standard includes: 1) source literature amendments to conform the language between current accounting literature and legacy source literature; 2) clarification of guidance and reference corrections; and 3) relocation of guidance to a more appropriate location. The adoption of this standard did not have an impact on our financial statements or disclosures.

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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 stock option and stock incentive plans. This disclosure may include (1) the types of stock option or incentive plans sponsored by the entity (2) the groups that participate in (or are covered by) each plan (3) significant plan provisions and (4) how stock compensation is measured, and the methodologies and significant assumptions used to determine that measurement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2228939 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 06-11 -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. 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 Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -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 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b),(f) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Disclosure of accounting policy for the classification of shipping and handling costs, including whether the costs are included in cost of sales or included in other income statement accounts. If shipping and handling fees are significant and are not included in cost of sales, disclosure includes both the amounts of such costs and the line item on the income statement which includes such costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6408413&loc=d3e221937-122793 Reference 2: 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 3: 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. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 00-10 -Paragraph 6 -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 FASB -Name Accounting Standards Codification -Glossary Shipping Costs -URI http://asc.fasb.org/extlink&oid=6525344 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Handling Costs -URI http://asc.fasb.org/extlink&oid=6514758 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6408196&loc=d3e61069-111654 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 45 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=21915142&loc=d3e60635-111653 + Details
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