CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash	$ 13,544	$ 14,581
Accounts receivable (net of allowance for doubtful accounts of $68 for 2016 and 2015)	9,669	10,919
Inventory	1,942	1,379
Other current assets	662	464
Total current assets	25,817	27,343
Property and equipment, net	4,393	4,049
Intangible assets, net	2,847	2,917
Total assets	33,057	34,309
Current liabilities:
Accounts payable	6,293	7,588
Accounts Payable and Accrued Liabilities, Current	4,943	3,603
Warrant liabilities	2,397	757
Other	136	160
Total current liabilities	13,769	12,108
Long term debt	62	71
Total liabilities	$ 13,831	$ 12,179
COMMITMENTS AND CONTINGENCIES (Note 13)
Shareholders' equity:
Series B-2 voting convertible preferred stock, no par value: shares authorized and reserved — 39, shares issued and outstanding — 12	$ 38,389	$ 38,389
Common stock, no par value; shares authorized — 75,000; shares issued and outstanding — 23,891 and 23,789, respectively	308,512	307,766
Treasury Stock, Value	(3,150)	(3,150)
Accumulated deficit	327,675	324,025
Total shareholders’ equity	19,226	22,130
Total liabilities and shareholders’ equity	$ 33,057	$ 34,309