Schedule II - Valuation and Qualifying Accounts (Details) - Valuation and Qualifying Accounts (USD $) In Thousands, unless otherwise specified	9 Months Ended				3 Months Ended				12 Months Ended
	May 31, 2012 Successor [Member] Allowance for Doubtful Accounts [Member]		May 31, 2012 Successor [Member] Valuation Allowance of Deferred Tax Assets [Member]		Aug. 19, 2011 Predecessor [Member] Allowance for Doubtful Accounts [Member]		Aug. 19, 2011 Predecessor [Member] Valuation Allowance of Deferred Tax Assets [Member]		May 31, 2014 Allowance for Doubtful Accounts [Member]		May 31, 2013 Allowance for Doubtful Accounts [Member]		May 31, 2014 Valuation Allowance of Deferred Tax Assets [Member]		May 31, 2013 Valuation Allowance of Deferred Tax Assets [Member]
2014
Beginning Balance			$ 2,312		$ 2,157		$ 2,467		$ 815		$ 612		$ 3,234		$ 1,888
Additions to Expense	689				183				268		180		1,111		984
Deductions	(77)	[1]	(424)	[1]	(52)	[1]	(155)	[1]	(1,934)	[1]	23	[1]	(383)	[1]	362
Other									1,749	[2]		[2]		[2]		[2]
Ending Balance	$ 612		$ 1,888		$ 2,288		$ 2,312		$ 898		$ 815		$ 3,962		$ 3,234

[1] Includes deductions, allowances written-off during the period less recoveries of accounts previously written-off, as well as the effects of changes in foreign exchange rates and changes in estimates. In 2013, the $362,000 of deferred income tax valuation allowance represents the beginning balances acquired in the LIFECODES acquisition.

[2] Represents valuation allowance to show gross receivables and related allowances at their net fair value at the time of acquisition, now reversed as the related receivables have been collected.