CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 1,094	$ 3,302
Restricted cash	606	724
Accounts receivable, net of allowance for doubtful accounts of $14,983 and $14,959, respectively	5,860	8,469
Inventories, net	9,690	11,735
Deferred tax asset, net	484	470
Prepaid expenses and other current assets	4,014	2,795
Total current assets	21,748	27,495
Property and equipment, net	1,216	1,306
Patents and licensed technologies, net	1,518	1,613
Other intangible assets, net	221	241
Goodwill, net	3,338	3,581
Other assets, net	133	138
Total assets	28,174	34,374
Current liabilities:
Notes payable (See Note 10)	1,494	490
Accounts payable	7,732	7,216
Accrued compensation and related expenses	3,362	2,917
Other accrued liabilities	8,281	8,565
Current portion of deferred revenues	1,323	1,847
Total current liabilities	22,192	21,035
Long-term liabilities:
Deferred revenues, net of current portion	418	642
Total liabilities	22,610	21,677
Commitments and contingencies (Note 12)
Stockholders' equity:
Preferred Stock, $.01 par value, 5,000,000 shares authorized; 0 shares issued and outstanding at June 30, 2016 and December 31, 2015
Common Stock, $.01 par value, 50,000,000 shares authorized; 21,805,468 and 21,991,718 shares issued and outstanding at June 30, 2016 and December 31, 2015, respectively	221	221
Additional paid-in-capital	117,476	116,616
Accumulated deficit	(109,606)	(102,371)
Accumulated other comprehensive loss	(2,527)	(1,769)
Total stockholders' equity	5,564	12,697
Total liabilities and stockholders' equity	$ 28,174	$ 34,374