Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 44,682	$ 83,560
Accounts receivable, net	3,089	2,488
Inventory	4,018	2,558
Prepaid expenses and other current assets	4,470	3,933
Total current assets	56,259	92,539
Property and equipment, net	4,253	4,262
Goodwill	2,715	2,715
Other intangible assets, net	2,528	3,256
Total assets	65,755	102,772
Current liabilities:
Accounts payable and accrued liabilities	18,839	19,501
Notes payable, current maturities, net	11,446	6,707
Deferred revenue, current	1,922	1,875
Derivative liability	100
Total current liabilities	32,307	28,083
Notes payable, less current maturities, net	17,726	22,168
Deferred revenue, long-term	20,000	20,000
Other long-term liabilities	825	825
Total liabilities	70,858	71,076
Commitments and contingencies (Notes 7 and 12)
Stockholders' (deficit) equity:
Preferred Stock, $.001 par value; 5,000,000 shares authorized; 2,093,155 shares of Series A Non-Voting Convertible Preferred Stock outstanding at September 30, 2016 and December 31, 2015	2	2
Common Stock, $.001 par value; 75,000,000 shares authorized; 54,133,511 and 52,730,799 shares issued; 54,118,020 and 52,715,308 shares outstanding at September 30, 2016 and December 31, 2015, respectively	54	53
Additional paid-in capital	289,287	274,891
Treasury stock, at cost, 15,491 shares	(47)	(47)
Accumulated deficit	(294,399)	(243,203)
Total stockholders' (deficit) equity	(5,103)	31,696
Total liabilities and stockholders' (deficit) equity	$ 65,755	$ 102,772