CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 94,969	$ 26,862
Accounts receivable (net of allowance for doubtful accounts of $102 and $249, respectively)	17,499	18,270
Inventory	3,725	3,793
Other current assets	1,327	1,581
Total current assets	117,520	50,506
Property and equipment, net	4,673	4,071
Total assets	122,193	54,577
Current liabilities:
Accounts payable	5,011	5,552
Accrued expenses	5,111	5,573
Deferred rent	503	420
Current portion of term loan credit agreement (net of deferred costs of $69 and $67, respectively)	2,848	350
Warrant liabilities	1,549	1,014
Other	198	181
Total current liabilities	15,220	13,090
Revolving and term loan credit agreement (net of deferred costs of $167 and $196, respectively)	14,416	16,888
Deferred rent	1,959	2,059
Total liabilities	31,595	32,037
COMMITMENTS AND CONTINGENCIES (Note 12)
Shareholders’ equity:
Common stock, no par value; shares authorized — 75,000; shares issued and outstanding — 42,684 and 35,861, respectively	463,483	383,020
Warrants	302	397
Accumulated deficit	(373,187)	(360,877)
Total shareholders’ equity	90,598	22,540
Total liabilities and shareholders’ equity	$ 122,193	$ 54,577