CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME [Abstract]
REVENUES	$ 317,711	$ 256,158	$ 136,920
Cost of sales (exclusive of amortization of intangibles, included within operating expenses below)	145,807	107,466	57,231
GROSS PROFIT	171,904	148,692	79,689
Selling, general and administrative expenses	53,508	48,053	32,392
Research and development expenses	19,858	15,858	11,555
Amortization of intangibles	7,422	6,870	1,733
Acquisition-related costs	2,912	9,155	743
TOTAL OPERATING EXPENSES	83,700	79,936	46,423
OPERATING INCOME	88,204	68,756	33,266
Amortization of deferred financing costs	(842)	(782)	(1,948)
Interest expense, net	(8,649)	(10,474)	(4,392)
Equity in earnings of unconsolidated joint venture	80	0	14,550
Bargain purchase gain	3,707	0	0
Other non-operating income (expense), net	395	0	(170)
INCOME BEFORE INCOME TAXES	82,895	57,500	41,306
Income tax provision (benefit)	30,533	22,122	(1,707)
CONSOLIDATED NET INCOME	52,362	35,378	43,013
CONSOLIDATED NET INCOME PER COMMON SHARE:
BASIC (in dollars per share)	$ 0.54	$ 0.37	$ 0.45
DILUTED (in dollars per share)	$ 0.46	$ 0.32	$ 0.41
SHARES USED IN COMPUTING CONSOLIDATED NET INCOME PER COMMON SHARE:
BASIC (in shares)	96,181	95,189	94,549
DILUTED (in shares)	113,898	110,510	103,912
COMPREHENSIVE INCOME:
Consolidated net income	52,362	35,378	43,013
Foreign currency translation loss	(6,463)	(5,904)	0
COMPREHENSIVE INCOME	$ 45,899	$ 29,474	$ 43,013