COMMITMENTS AND CONTINGENCIES (Details) (USD $)	12 Months Ended
	Mar. 31, 2015 Defendant		Mar. 31, 2014	Mar. 31, 2013	May 19, 2009 Defendant
COMMITMENTS AND CONTINGENCIES [Abstract]
Rent expense	$ 4,700,000		$ 3,800,000	$ 3,500,000
Future Minimum Lease Payments [Abstract]
Year ending March 31, 2016	4,199,000
2017	3,329,000
2018	2,397,000
2019	932,000
2020 and thereafter	353,000
Operating lease obligations (1)	11,210,000	[1]
Legal Proceedings [Abstract]
Number of defendants infringing patents					4
Number of defendants entered into agreement	3
Judgment amount	18,200,000
Number of defendants alleged to conspire to fix, raise, maintain or stabilize prices	10
Anticipated settlement receivable	$ 6,200,000

[1] Excluding taxes, insurance and common area maintenance charges.