Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Dec. 31, 2009	Dec. 31, 2009	Dec. 31, 2010 Restated [Member]	Dec. 31, 2010 Restated [Member]
Revenues	$ 80,659	$ 228,331	$ 31,570	$ 226,853
Cost and operating expenses:
Cost of revenues	50,444	146,498	31,528	149,167
Research and development	6,421	16,365	8,417	23,610
Selling, general and administrative	12,881	36,478	14,192	46,724
Amortization of acquisition related intangibles	473	1,378	393	1,154
Restructuring and impairments		451
Total cost and operating expenses	70,219	201,170	54,530	220,655
Operating (loss) income	10,440	27,161	(22,960)	6,198
Interest income, net	195	628	171	549
Other income (expense), net	193	(2,654)	2,136	4,745
(Loss) income before income tax expense	10,828	25,135	(20,653)	11,492
Income tax (benefit) expense	5,649	13,824	(2,495)	12,642
Net (loss) income	$ 5,179	$ 11,311	$ (18,158)	$ (1,150)
Net (loss) income per common share
Basic	$ 0.12	$ 0.26	$ (0.38)	$ (0.02)
Diluted	$ 0.11	$ 0.25	$ (0.38)	$ (0.02)
Weighted average number of common shares outstanding
Basic	44,623	44,222	48,068	46,017
Diluted	45,566	45,072	48,068	46,017