Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current:
Cash and cash equivalents	$ 45,118	$ 20,035
Accounts receivable, net of allowance for doubtful accounts of $472 and $161, respectively	22,600	15,542
Other receivables	320	405
Inventories	18,087	18,099
Prepaid expenses and other current assets	1,442	1,023
Total current assets	87,567	55,104
Property and equipment, net	4,984	4,454
Goodwill	29,022	27,073
Intangibles, net	43,356	43,439
Deposits and other assets	174	185
Total assets	165,103	130,255
Current liabilities:
Accounts payable	6,348	6,377
Accrued payroll	7,825	6,569
Accrued expenses and other current liabilities	3,021	1,003
Total current liabilities	17,194	13,949
Long-term liabilities:
Long term debt	1,035	1,029
Deferred rent	0	8
Contingently issuable common stock	52,400	38,700
Total liabilities	70,629	53,686
Commitments and contingencies
Stockholders’ equity:
Convertible preferred stock, $0.001 par value; 5,000,000 shares authorized. No shares issued and outstanding.	0	0
Common stock, $0.001 par value; 75,000,000 shares authorized, 63,068,463 and 58,577,484 shares issued, respectively. 62,573,763 and 58,082,784 shares outstanding, respectively.	63	59
Additional paid-in capital	295,338	241,441
Accumulated deficit	(200,014)	(164,240)
Treasury stock, at cost, 494,700 shares	(661)	(661)
Accumulated other comprehensive income (loss)	(252)	(30)
Total stockholders’ equity	94,474	76,569
Total liabilities and stockholders’ equity	$ 165,103	$ 130,255