Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 51,192	$ 20,035
Accounts receivable, net of allowance for doubtful accounts of $182 and $161, respectively.	17,822	15,542
Other receivables	431	405
Inventories	19,838	18,099
Prepaid expenses and other current assets	1,724	1,023
Total current assets	91,007	55,104
Property and equipment, net	4,821	4,454
Goodwill	27,073	27,073
Intangibles, net	42,843	43,439
Deposits and other assets	445	185
Total assets	166,189	130,255
Current liabilities:
Accounts payable	4,914	6,377
Accrued payroll	6,185	6,569
Accrued expenses and other current liabilities	2,295	1,003
Total current liabilities	13,394	13,949
Deferred income taxes	1,029	1,029
Deferred rent	0	8
Contingently issuable common stock	52,390	38,700
Total liabilities	66,813	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	287,506	241,441
Accumulated deficit	(187,639)	(164,240)
Treasury stock, at cost, 494,700 shares	(661)	(661)
Accumulated other comprehensive income (loss)	108	(30)
Total stockholders’ equity	99,376	76,569
Total liabilities and stockholders’ equity	166,189	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