CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash	$ 9,835	$ 14,581
Accounts receivable (net of allowance for doubtful accounts of $54 and $68, respectively)	9,031	10,919
Inventory	2,393	1,379
Other current assets	1,046	464
Total current assets	22,305	27,343
Property and equipment, net	4,351	4,049
Intangible assets, net	2,778	2,917
Total assets	29,434	34,309
Current liabilities:
Accounts payable	5,305	7,588
Accrued expenses	2,892	3,603
Revolving credit agreement, net of deferred costs of $96	2,304	0
Warrant liabilities	455	757
Short-term deferred rent	460	118
Other	39	42
Total current liabilities	11,455	12,108
Long-term deferred rent	820	0
Long term debt	52	71
Total liabilities	12,327	12,179
COMMITMENTS AND CONTINGENCIES (Note 13)
Shareholders' equity:
Common stock, no par value; shares authorized — 75,000; shares issued and outstanding — 22,684 and 23,789, respectively	309,437	307,766
Treasury stock — 1,250 shares	(3,150)	(3,150)
Accumulated deficit	330,719	324,025
Total shareholders’ equity	17,107	22,130
Total liabilities and shareholders’ equity	29,434	34,309
Series A Non-voting Convertible Preferred Stock
Shareholders' equity:
Series B-2 voting convertible preferred stock, no par value: shares authorized and reserved — 39, shares issued and outstanding — 12	3,150	3,150
Series B Non-voting Convertible Preferred Stock
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