Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 2,826	$ 9,044
Receivables net of allowances of $39 and $41, at June 30, 2018 and December 31, 2017, respectively	7,309	6,565
Prepaid expenses	5,811	5,805
Other current assets	60	65
Total current assets	16,006	21,479
Equipment and leasehold improvements, net of accumulated depreciation and amortization of $26,819 and $24,955, at June 30, 2018 and December 31, 2017, respectively	6,330	8,572
Goodwill	972	972
Intangible assets, net of amortization of $4,607 and $4,357, at June 30, 2018 and December 31, 2017, respectively	2,808	2,952
Other long-term assets (includes $0 and $2,675 in restricted cash, at June 30, 2018 and December 31, 2017, respectively)	2,747	5,960
Total assets	28,863	39,935
Current Liabilities:
Short-term debt	1,714	93
Accounts payable	999	1,474
Accrued compensation and related costs	1,793	3,312
Unearned revenue	6,005	3,032
Capital leases	1,515	1,967
Other current liabilities	5,732	3,399
Total current liabilities	17,758	13,277
Long-term debt	6,890	17,056
Long-term unearned revenue	830	914
Long-term capital leases	609	1,190
Other long-term liabilities	6,500	6,475
Total liabilities	32,587	38,912
7% Series B convertible preferred stock, $0.01 par value; 5,000,000 shares authorized and designated; 1,637,786 and 1,637,786 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively, with a liquidation preference of $11,860 and $11,568, at June 30, 2018 and December 31, 2017, respectively	8,353	8,353
Stockholders’ Equity:
Preferred stock, $0.01 par value; 35,000,000 shares authorized; none issued and outstanding
Common stock, $0.01 par value; 50,000,000 shares authorized; 33,326,927 and 33,083,180 shares issued at June 30, 2018 and December 31, 2017, respectively; 33,216,071 and 33,039,713 shares outstanding at June 30, 2018 and December 31, 2017, respectively	333	331
Additional paid-in capital	278,035	275,963
Accumulated deficit	(286,094)	(279,425)
Treasury stock, at cost, 110,856 and 43,467 shares at June 30, 2018 and December 31, 2017, respectively	(269)	(117)
Accumulated other comprehensive loss	(4,082)	(4,082)
Total stockholders’ deficit	(12,077)	(7,330)
Total liabilities and stockholders’ equity	$ 28,863	$ 39,935