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Fair Value (Tables)

6 Months Ended

Nov. 30, 2012

Fair Value [Abstract]

Fair value of assets and liabilities measured on recurring basis

		Fair Value Measurements using inputs considered as:												Fair Value at Nov 30, 2012
		Level 1				Level 2				Level 3
Financial Assets
Cash equivalents
Money market funds		$	120			$	—			$	—			$	120
Total		$	120			$	—			$	—			$	120
Marketable securities
Corporate bond securities		$	—			$	305			$	—			$	305
U.S. government agency obligations			—				—				1,850				1,850
Total			—				305				1,850				2,155
Total Financial Assets		$	120			$	305			$	1,850			$	2,275
Financial Liabilities
Interest rate swap agreements		$	—			$	1,059			$	—			$	1,059
Contingent liability for acquisition earn out											60,499				60,499
Total Financial Liabilities		$	—			$	1,059			$	60,499			$	61,558

		Fair Value Measurements using inputs considered as:												Fair Value at May 31, 2012
		Level 1				Level 2				Level 3
Financial Assets
Cash equivalents
Money market funds		$	4,762			$	—			$	—			$	4,762
Total		$	4,762			$	—			$	—			$	4,762
Marketable securities
Corporate bond securities		$	—			$	6,371			$	—			$	6,371
U.S. government agency obligations			—				5,849				1,850				7,699
Total			—				12,220				1,850				14,070
Total Financial Assets		$	4,762			$	12,220			$	1,850			$	18,832

Fair Value Measurements Using Significant Unobservable Inputs

		Fair Value Measurements Using Significant Unobservable Inputs
		(Level 3)
Balance, May 31, 2012		$	1,850
Total gains or losses (realized/unrealized):			—
Included in earnings			—
Included in other comprehensive income			—
Purchases, issuances and settlements			—
Transfers in and/or (out) of Level 3			—
Contingent liability for acquisition earn out			60,499
Balance, November 30, 2012		$	62,349

Summary showing the recurring fair value measurements of the contingent consideration liability

		Fair value at Nov 30, 2012				Valuation Technique		Unobservable Input		Range
Net sales based payments		$	60.5			Discounted		Discount rate		4%
						cash flow		Probability of payment		75-100%
								Projected fiscal year of payment		2013 - 2022

Summary showing reconciliation of the contingent payments

Beginning balance - May 31, 2012		$	—
Purchase price contingent consideration			60.3
Contingent payments			—
Change in fair value of contingent consideration			0.2
Ending balance—November 30, 2012		$	60.5

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- Definition

Schedule of fair value liabilities measured on recurring basis unobservable input reconciliation.

+ References

No definition available.

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- Definition

Tabular disclosure of liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 6

-Footnote 4

-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 Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-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 820

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

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- Definition

Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19279-110258



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 157

-Paragraph 32

-Subparagraph c

-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.

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- Definition

Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258

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