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Fair Value Measurements | 12 Months Ended
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Apr. 30, 2017
Fair Value Disclosures [Abstract] |
Fair Value Measurements | Fair Value Measurements The Company utilizes the hierarchy of fair value measurements to classify certain of its assets and liabilities based upon the following definitions: Level 1 – Investments with quoted prices in active markets for identical assets or liabilities. The Company’s cash equivalents are invested in money market funds, mutual funds and certificates of deposit. The Company’s mutual fund investment assets represent contributions made and invested on behalf of the Company’s named executive officers in a supplementary employee retirement plan. Level 2 – Investments with observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. The Company has no Level 2 assets or liabilities. Level 3 – Investments with unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. The Company has no Level 3 assets or liabilities. The fair value measurement of assets held by the Company’s defined benefit pension plans is discussed in Note H. The Company's financial instruments include cash and equivalents, marketable securities and other investments; accounts receivable and accounts payable; and short- and long-term debt. The carrying values of cash and equivalents, accounts receivable and payable and short- and long-term debt on the Consolidated Balance Sheets approximate their fair value. The following table summarizes the fair value of assets that are recorded in the Company’s consolidated financial statements as of April 30, 2017 and 2016 at fair value on a recurring basis:
| FAIR VALUE MEASUREMENTS AS OF APRIL 30, 2017
(in thousands) | LEVEL 1 |  | LEVEL 2 |  | LEVEL 3
ASSETS: |  |  |  |  |
Money market funds | $ | 50,146 |  |  | $ | — |  |  | $ | — |
Mutual funds | 1,038 |  |  | — |  |  | — |
Certificates of deposit | 72,250 |  |  | — |  |  | — |
Total assets at fair value | $ | 123,434 |  |  | $ | — |  |  | $ | — |
| FAIR VALUE MEASUREMENTS AS OF APRIL 30, 2016
(in thousands) | LEVEL 1 |  | LEVEL 2 |  | LEVEL 3
ASSETS: |  |  |  |  |
Money market funds | $ | 30,490 |  |  | $ | — |  |  | $ | — |
Mutual funds | 998 |  |  | — |  |  | — |
Certificates of deposit | 47,500 |  |  | — |  |  | — |
Total assets at fair value | $ | 78,988 |  |  | $ | — |  |  | $ | — |

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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 820 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: 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 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 825 -SubTopic 10 -Section 50 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611 Reference 5: 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=73719730&loc=d3e13504-108611 Reference 6: 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=73719730&loc=d3e13433-108611 + Details
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