Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 54,429	$ 70,472
Accounts receivable, net	1,406	3,141
Inventory	1,887	1,828
Prepaid expenses and other current assets	3,609	2,882
Total current assets	61,331	78,323
Property and equipment, net	4,261	3,890
Goodwill	2,715	2,715
Other intangible assets, net	3,498	4,226
Other assets	610	157
Total assets	72,415	89,311
Current liabilities:
Accounts payable and accrued liabilities	14,973	14,429
Notes payable, current maturities	4,000	8,000
Deferred revenue, current	7,236	6,772
Total current liabilities	26,209	29,201
Notes payable, less current maturities, net	25,679	4,173
Deferred revenue, long-term		841
Other long-term liabilities	825	700
Total liabilities	$ 52,713	$ 34,915
Commitments and contingencies (Notes 6, 7 and 10)
Stockholders' equity:
Preferred Stock, $.001 par value; 5,000,000 shares authorized; 2,093,155 and 2,139,000 shares of Series A Non-Voting Convertible Preferred Stock outstanding at September 30, 2015 and December 31, 2014, respectively	$ 2	$ 2
Common Stock, $.001 par value; 75,000,000 shares authorized; 52,655,369 and 51,603,070 shares issued; 52,639,878 and 51,587,579 shares outstanding at September 30, 2015 and December 31, 2014, respectively	53	52
Additional paid-in capital	273,069	259,920
Treasury stock, at cost, 15,491 shares	(47)	(47)
Accumulated deficit	(253,375)	(205,531)
Total stockholders' equity	19,702	54,396
Total liabilities and stockholders' equity	$ 72,415	$ 89,311