Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 67,655	$ 70,472
Accounts receivable, net	1,526	3,141
Inventory	1,533	1,828
Prepaid expenses and other current assets	2,749	2,882
Total current assets	73,463	78,323
Property and equipment, net	4,305	3,890
Goodwill	2,715	2,715
Other intangible assets, net	3,741	4,226
Other assets	684	157
Total assets	84,908	89,311
Current liabilities:
Accounts payable and accrued liabilities	12,263	14,429
Notes payable, current maturities	1,000	8,000
Deferred revenue, current	7,247	6,772
Total current liabilities	20,510	29,201
Notes payable, less current maturities, net	28,653	4,173
Deferred revenue, long-term		841
Other long-term liabilities	825	700
Total liabilities	$ 49,988	$ 34,915
Commitments and contingencies (Notes 6 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 June 30, 2015 and December 31, 2014, respectively.	$ 2	$ 2
Common Stock, $.001 par value; 75,000,000 shares authorized; 52,436,926 and 51,603,070 shares issued; 52,421,435 and 51,587,579 shares outstanding at June 30, 2015 and December 31, 2014, respectively	53	52
Additional paid-in capital	267,847	259,920
Treasury stock, at cost, 15,491 shares	(47)	(47)
Accumulated deficit	(232,935)	(205,531)
Total stockholders' equity	34,920	54,396
Total liabilities and stockholders' equity	$ 84,908	$ 89,311