Goodwill and Intangible Assets (Tables)

12 Months Ended

May 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Adjustments to goodwill for the fiscal year ended May 31, 2014 and May 31, 2013 are as follows (in thousands):



	Total
Balance, May 31, 2012	$	308,912
Goodwill recognized from Vortex business combination	29,519
Goodwill recognized from Microsulis asset acqusition	19,284
Adjustments to Navilyst purchase price allocation	(2,257		)
Balance, May 31, 2013	$	355,458
Acquisition of Clinical Devices B.V.	4,836
Balance, May 31, 2014	$	360,294

Intangible assets

As of May 31, 2014 and 2013, intangible assets consisted of the following:



	May 31, 2014
	Gross carrying value		Accumulated amortization			Net carrying value		Weighted average useful life
	(in thousands)							(years)
Product technologies	$	150,298	$	(32,930	)	$	117,368	10.2
Customer relationships	86,645		(37,848		)	48,797		11.9
Trademark—NAMIC	28,600		—			28,600		Indefinite
In process R&D Acquired	3,600		—			3,600		Indefinite
Licenses	7,639		(5,211		)	2,428		8.4
Trademarks	6,345		(1,882		)	4,463		8.0
Distributor relationships	900		(900		)	—		3.0
	$	284,027	$	(78,771	)	$	205,256



	May 31, 2013
	Gross carrying value		Accumulated amortization			Net carrying value		Weighted avg useful life
	(in thousands)							(years)
Customer relationships	$	150,181	$	(24,835	)	$	125,346	10.6
Product technologies	84,479		(30,595		)	53,884		14.8
Trademark—NAMIC	28,600		—			28,600		Indefinite
Licenses	6,302		(4,501		)	1,801		9.0
Trademarks	6,275		(1,058		)	5,217		9.9
Distributor relationships	900		(900		)	—		3.0
	$	276,737	$	(61,889	)	$	214,848

Expected amortization expense

Annual amortization of these intangible assets is expected to approximate the following amounts for each of the next five fiscal years (in thousands):



2015	$	15,693
2016	15,696
2017	16,355
2018	17,385
2019	19,928