Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Cash flows from operating activities:
Net income (loss)	$ (10,650)	$ 11,352
Adjustments to reconcile to net cash provided by (used in) operating activities:
Stock-based compensation expense	5,150	3,363
Depreciation and amortization	4,514	2,646
Deferred income taxes	3,129	3,437
Non-cash development expenses from variable interest entities	3,348	185
Impairment of long-lived assets	193	1,029
Change in fair value of contingent value rights	1,408	0
Excess tax benefits from stock-based compensation	(1,786)	(709)
Other	43	(29)
Changes in operating assets and liabilities:
Accounts receivable	(7,937)	9,107
Inventories	(4,540)	(3,595)
Income taxes	(8,408)	(6,214)
Prepaid expenses and other assets	1,557	159
Accounts payable	(766)	4,151
Accrued expenses and other liabilities	26	(329)
Accrued compensation	(10,152)	(3,346)
Deferred revenue	(3,936)	(14)
Net cash (used in) provided by operating activities	(28,807)	21,193
Cash flows from investing activities:
Purchases of property, plant and equipment	(16,795)	(8,631)
Purchase of investments	(5,269)	0
Proceeds from maturity of investments	2,250	0
Net cash used in investing activities	(19,814)	(8,631)
Cash flows from financing activities:
Proceeds from borrowing on line of credit	0	15,000
Issuance of common stock subject to exercise of stock options	8,695	2,784
Principal payments on long-term indebtedness and line of credit	(8,123)	(31,621)
Excess tax benefits from stock-based compensation	1,786	709
Net cash provided by (used in) financing activities	2,358	(13,128)
Effect of exchange rate changes on cash and cash equivalents	(662)	(165)
Net increase (decrease) in cash and cash equivalents	(46,925)	(731)
Cash and cash equivalents at beginning of period	169,019	102,924
Cash and cash equivalents at end of period	$ 122,094	$ 102,193