Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 18,743	$ 10,277
Trade accounts receivable, net of allowance for doubtful accounts of $211 and $212, respectively	12,232	8,435
Inventories	9,359	7,476
Prepaid expenses and other current assets	798	776
Total current assets	41,132	26,964
Property and equipment:
Machinery and equipment	5,414	5,356
Leasehold improvements	2,908	2,636
Gross property and equipment	8,322	7,992
Less: accumulated depreciation	(5,925)	(5,642)
Net property and equipment	2,397	2,350
Right-of-use assets, net	5,819	6,387
Goodwill	13,738	13,738
Intangible assets, net	11,503	12,421
Restricted certificates of deposit	100	140
Other assets	40	30
Total assets	74,729	62,030
Current liabilities:
Accounts payable	3,849	2,424
Accrued wages and benefits	2,881	1,944
Accrued professional fees	827	776
Customer deposits and deferred revenue	2,082	396
Accrued sales commissions	836	472
Current portion of operating lease liabilities	1,207	1,215
Domestic and foreign income taxes payable	1,121	825
Other current liabilities	741	804
Total current liabilities	13,544	8,856
Operating lease liabilities, net of current portion	5,332	6,050
Deferred tax liabilities	1,701	1,922
Other liabilities	436	450
Total liabilities	21,013	17,278
Commitments and Contingencies
Stockholders' equity:
Preferred stock, $0.01 par value; 5,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.01 par value; 20,000,000 shares authorized; 10,819,294 and 10,562,200 shares issued, respectively	108	106
Additional paid-in capital	28,962	26,851
Retained earnings	24,106	17,110
Accumulated other comprehensive earnings	744	889
Treasury stock, at cost; 33,077 shares	(204)	(204)
Total stockholders' equity	53,716	44,752
Total liabilities and stockholders' equity	$ 74,729	$ 62,030