CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash	$ 29,777	$ 26,862
Accounts receivable (net of allowance for doubtful accounts of $315 and $249, respectively)	13,162	18,270
Inventory	3,905	3,793
Other current assets	1,358	1,581
Total current assets	48,202	50,506
Property and equipment, net	4,207	4,071
Total assets	52,409	54,577
Current liabilities:
Accounts payable	5,768	5,552
Accrued expenses	4,007	5,573
Short term deferred rent	426	420
Current portion of term loan credit agreement (net of deferred costs of $69 and $67, respectively)	1,597	350
Warrant liabilities	1,921	1,014
Other	159	181
Total current liabilities	13,878	13,090
Revolving and term loan credit agreement (net of deferred costs of $185 and $196, respectively)	15,649	16,888
Long term deferred rent	1,947	2,059
Total liabilities	31,474	32,037
COMMITMENTS AND CONTINGENCIES (Note 12)
Shareholders’ equity:
Common stock, no par value; shares authorized — 75,000; shares issued and outstanding — 36,502 and 35,861, respectively	389,074	383,020
Warrants	397	397
Accumulated deficit	(368,536)	(360,877)
Total shareholders’ equity	20,935	22,540
Total liabilities and shareholders’ equity	$ 52,409	$ 54,577