Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 29,880	$ 35,857
Short-term investments	44,697	121,573
Accounts receivable, trade, net	75,675	55,859
Accounts receivable, other	1,776	1,685
Inventories, current	40,261	22,134
Prepaid expenses and other current assets	9,992	3,762
Total current assets	202,281	240,870
Inventories, non-current	57,693	49,697
Property and equipment, net	37,005	29,220
Intangible assets, net	656,105	0
Goodwill	113,369	0
Other assets	19,610	7,605
Total assets	1,086,063	327,392
Current liabilities:
Accounts payable	10,065	3,565
Accrued expenses	110,507	80,740
Deferred revenue, current portion	2,032	11,835
Deferred rent, current portion	1,744	936
Current portion of term loan	10,336	0
Contingent consideration, current	35,679	0
Total current liabilities	170,363	97,076
Term loan, long-term portion	201,343	0
Senior Convertible Notes	288,177	0
Deferred revenue, long-term portion	25,272	26,288
Deferred rent, long-term portion	6,688	4,140
Contingent consideration, long-term portion	76,713	0
Deferred tax liability	10,693	0
Total liabilities	779,249	127,504
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.01 par value per share, 5,000,000 shares authorized, no shares issued or outstanding	0	0
Common stock, $0.01 par value per share; authorized 120,000,000 shares; issued 49,463,518 and 49,419,104 shares at June 30, 2013 and December 31, 2012, respectively	495	494
Additional paid-in capital	583,401	525,354
Accumulated deficit	(273,187)	(322,115)
Treasury stock at cost: 144,245 and 136,405 shares at June 30, 2013 and December 31, 2012, respectively	(3,476)	(3,337)
Accumulated other comprehensive loss	(419)	(508)
Total stockholders' equity	306,814	199,888
Total liabilities and stockholders' equity	$ 1,086,063	$ 327,392