Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 7,097	$ 4,069
Marketable securities		3,905
Accounts receivable, net of allowance for doubtful accounts of $46 in 2019 and $67 in 2018	4,526	4,829
Prepaid expenses and other current assets	1,700	1,067
Total Current Assets	13,323	13,870
Fixed assets, net of accumulated amortization and depreciation of $14,820 in 2019 and $13,341 in 2018	9,503	10,177
Other assets	893	927
Operating lease right-of-use assets	1,416
Total Assets	25,135	24,974
Current Liabilities:
Accounts payable	704	682
Accrued expenses	2,220	2,962
Current portion of long-term debt	416	416
Current operating lease liabilities	861
Total Current Liabilities	4,201	4,060
Long-term debt	1,005	1,212
Deferred tax liabilities, long-term	897	955
Long-term operating lease liabilities	555
Total Liabilities	6,658	6,227
Commitments and Contingencies (Note 7)
Shareholders' Equity:
Preferred stock, $0.005 par value, 873 shares authorized, no shares issued or outstanding
Common stock, $0.005 par value; 50,000 shares authorized Shares issued and outstanding: 6,185 in 2019 and 6,175 in 2018	31	31
Additional paid-in capital	31,809	31,523
Accumulated deficit	(1,916)	(1,326)
Less - Treasury stock, at cost, 668 shares	(10,082)	(10,082)
Accumulated other comprehensive loss	(1,365)	(1,399)
Total Shareholders' Equity	18,477	18,747
Total Liabilities and Shareholders' Equity	$ 25,135	$ 24,974