Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 10,277	$ 7,612
Trade accounts receivable, net of allowance for doubtful accounts of $212 and $211, respectively	8,435	9,296
Inventories	7,476	7,182
Prepaid expenses and other current assets	776	805
Total current assets	26,964	24,895
Property and equipment:
Machinery and equipment	5,356	5,269
Leasehold improvements	2,636	2,424
Gross property and equipment	7,992	7,693
Less: accumulated depreciation	(5,642)	(5,273)
Net property and equipment	2,350	2,420
Right of use assets, net	6,387	4,842
Goodwill	13,738	13,738
Intangible assets, net	12,421	13,654
Restricted certificates of deposit	140	140
Other assets	30	26
Total assets	62,030	59,715
Current liabilities:
Accounts payable	2,424	1,984
Accrued wages and benefits	1,944	2,007
Accrued professional fees	776	805
Customer deposits and deferred revenue	396	456
Accrued sales commission	472	442
Current portion of operating lease liabilities	1,215	1,302
Domestic and foreign income taxes payable	825	868
Other current liabilities	804	497
Total current liabilities	8,856	8,361
Operating lease liabilities, net of current portion	6,050	3,794
Deferred tax liabilities	1,922	2,263
Other liabilities	450	463
Total liabilities	17,278	14,881
Commitments and Contingencies (Note 12)
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; 10,562,200 and 10,413,982 shares issued, respectively	106	104
Additional paid-in capital	26,851	26,256
Retained earnings	17,110	18,005
Accumulated other comprehensive earnings	889	673
Treasury stock, at cost; 33,077 shares	(204)	(204)
Total stockholders' equity	44,752	44,834
Total liabilities and stockholders' equity	$ 62,030	$ 59,715