Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 7,318	$ 7,612
Trade accounts receivable, net of allowance for doubtful accounts of $210 and $211, respectively	8,052	9,296
Inventories	7,720	7,182
Prepaid expenses and other current assets	686	805
Total current assets	23,776	24,895
Property and equipment:
Machinery and equipment	5,341	5,269
Leasehold improvements	2,423	2,424
Gross property and equipment	7,764	7,693
Less: accumulated depreciation	(5,423)	(5,273)
Net property and equipment	2,341	2,420
Right-of-use assets, net	5,691	4,842
Goodwill	13,738	13,738
Intangible assets, net	13,343	13,654
Restricted certificates of deposit	140	140
Other assets	30	26
Total assets	59,059	59,715
Current liabilities:
Accounts payable	2,299	1,984
Accrued wages and benefits	1,462	2,007
Accrued professional fees	698	805
Customer deposits and deferred revenue	605	456
Accrued sales commissions	519	442
Current portion of operating lease liabilities	1,303	1,302
Domestic and foreign income taxes payable	660	868
Other current liabilities	470	497
Total current liabilities	8,016	8,361
Operating lease liabilities, net of current portion	4,644	3,794
Contingent liability for repayment of state and local grant funds received	463	463
Deferred tax liabilities	2,170	2,263
Total liabilities	15,293	14,881
Commitments and Contingencies
Stockholders' equity:
Preferred stock, $0.01 par value; 5,000,000 shares authorized; no shares issued or outstanding
Common stock, $0.01 par value; 20,000,000 shares authorized; 10,450,060 and 10,413,982 shares issued, respectively	105	104
Additional paid-in capital	26,368	26,256
Retained earnings	16,862	18,005
Accumulated other comprehensive earnings	635	673
Treasury stock, at cost; 33,077 shares	(204)	(204)
Total stockholders' equity	43,766	44,834
Total liabilities and stockholders' equity	$ 59,059	$ 59,715