Segment Information about Reported Product Revenues and Operating Income (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment Reporting Information [Line Items]
Product revenues	$ 554,979	$ 369,588	$ 112,403
Depreciation and amortization	30,627	23,282	1,298
Operating income (loss)	36,058	17,808	11,357
CCS
Segment Reporting Information [Line Items]
Product revenues	132,265	131,732	111,669
Depreciation and amortization	1,215	1,032	514
Operating income (loss)	11,479	33,025	28,817
Advanced Technology
Segment Reporting Information [Line Items]
Product revenues		608	734
Depreciation and amortization	478	560	524
Operating income (loss)	(6,571)	(6,872)	(6,505)
W.E.T.
Segment Reporting Information [Line Items]
Product revenues	422,714	237,248
Depreciation and amortization	27,747	20,900
Operating income (loss)	50,980	10,866
Reconciling Items
Segment Reporting Information [Line Items]
Depreciation and amortization	1,187	790	260
Operating income (loss)	$ (19,830)	$ (19,211)	$ (10,955)