Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 47,740	$ 20,035
Accounts receivable, net of allowance for doubtful accounts of $182 and $161, respectively.	19,616	15,542
Other receivables	302	405
Inventories	19,061	18,099
Prepaid expenses and other current assets	1,579	1,023
Total current assets	88,298	55,104
Property and equipment, net	4,951	4,454
Goodwill	28,969	27,073
Intangibles, net	43,399	43,439
Deposits and other assets	211	185
Total assets	165,828	130,255
Current liabilities:
Accounts payable	9,487	6,377
Accrued payroll	6,977	6,569
Accrued expenses and other current liabilities	2,264	1,003
Total current liabilities	18,728	13,949
Deferred income taxes	1,029	1,029
Deferred rent	0	8
Contingently issuable common stock	51,400	38,700
Total liabilities	71,157	53,686
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.001 par value; 75,000,000 shares authorized. 62,349,507 and 58,577,484 shares issued, respectively. 61,332,011 and 58,082,784 shares issued and outstanding, respectively.	62	59
Additional paid-in capital	288,798	241,441
Accumulated deficit	(193,496)	(164,240)
Treasury stock, at cost, 494,700 shares	(661)	(661)
Accumulated other comprehensive income (loss)	(32)	(30)
Total stockholders’ equity	94,671	76,569
Total liabilities and stockholders’ equity	165,828	130,255
Convertible Preferred Stock [Member]
Stockholders’ equity:
Convertible preferred stock, $0.001 par value; 5,000,000 shares authorized. No shares issued and outstanding.	$ 0	$ 0