Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash	$ 5,322	$ 2,194
Accounts receivable, net	1,508	836
Investment in lease, net-current portion	24	20
Inventory, net	1,459	674
Prepaid expenses and other current assets	63	85
Total current assets	8,376	3,809
Property and equipment, net	20	52
Investment in lease, net-less current portion	26	39
License and supply agreement, net	971	1,072
Other asset	11	11
Total assets	9,404	4,983
Current liabilities:
Secured revolving credit facility	163	711
Current portion of secured note payable	191
Accounts payable	562	872
Accrued expenses	524	218
Deferred revenue, current portion		70
Total current liabilities	1,440	1,871
Secured note payable, net of current portion	897
Unsecured long-term note payable, net of debt issuance costs and debt discount of $0 and $233, respectively		954
Long-term portion of deferred revenue		208
Total liabilities	2,337	3,033
Commitments and Contingencies (Note 18)
Noncontrolling interest	3,000
Stockholders’ equity:
Preferred stock, $.001 par value; 5,000,000 shares authorized at September 30, 2018 and December 31, 2017; no shares issued and outstanding at September 30, 2018 and December 31, 2017
Common stock, $.001 par value; 90,000,000 shares authorized at September 30, 2018 and December 31, 2017; 64,166,988 and 55,293,267 shares issued and outstanding at September 30, 2018 and December 31, 2017, respectively	64	55
Additional paid-in capital	127,419	122,924
Accumulated other comprehensive income	73	77
Accumulated deficit	(123,489)	(121,106)
Total stockholders' equity	4,067	1,950
Total liabilities, noncontrolling interest and stockholders' equity	$ 9,404	$ 4,983