ACQUISITIONS (Details) (USD $)	12 Months Ended							1 Months Ended	12 Months Ended
	Mar. 31, 2012	Apr. 02, 2011	Apr. 03, 2010	Dec. 28, 2010 Applied Critical Care Services, Inc. [Member]	Mar. 31, 2012 Global Med Technologies, Inc. [Member]	Mar. 31, 2010 Global Med Technologies, Inc. [Member]	Sep. 04, 2009 SEBRA of Engineering and Research Associates, Inc [Member]	Sep. 30, 2011 Neoteric [Member]	Mar. 31, 2012 Neoteric [Member]	Apr. 02, 2011 Neoteric [Member]	Apr. 03, 2010 Neoteric [Member]	Apr. 16, 2009 Neoteric [Member]	Dec. 28, 2010 Customer Relationships [Member] Applied Critical Care Services, Inc. [Member]	Sep. 04, 2009 Customer Relationships [Member] SEBRA of Engineering and Research Associates, Inc [Member]	Sep. 04, 2009 Core Technology [Member] SEBRA of Engineering and Research Associates, Inc [Member]	Sep. 04, 2009 Trade Names [Member] SEBRA of Engineering and Research Associates, Inc [Member]
Business Acquisition [Line Items]
Business acquisition, cost of acquired entity, purchase price				$ 6,400,000		$ 60,400,000	$ 12,800,000					$ 6,600,000
Business acquisition, purchase price allocation, other liabilities				800,000
Goodwill				2,700,000	39,554,000		3,700,000					8,200,000
Intangible assets subject to amortization					39,920,000							5,000,000	4,500,000	4,600,000	2,000,000	400,000
Trade accounts receivable					6,848,000		1,000,000
Other assets					7,639,000
Deferred taxes					(10,928,000)							(1,600,000)
Notes payable	0	0	(5,132,000)		(7,701,000)
Deferred revenue					(7,180,000)
Other liabilities					(7,725,000)
Total					60,427,000
Business acquisition, purchase price allocation, inventory							1,100,000
Contingent consideration, reduction of contingent liability	(1,580,000)	(1,894,000)	(2,345,000)						(1,600,000)
Reversal of interest expense on contingent consideration	574,000	416,000	(588,000)						600,000	600,000	(400,000)
Contingent consideration paid for settlement								$ 700,000