Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net (loss) income	$ (665)	$ (3,859)	$ 1,542
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Forgiveness of PPP loan	(2,181)		0
Depreciation and amortization	2,784	2,691	2,914
ROU asset amortization	906	935	0
Deferred income taxes	(371)	(339)	(405)
Loss on sale of fixed assets		94	0
Non-cash interest income (expense)	0	0	33
Stock compensation expense	743	563	759
Changes in operating assets and liabilities:
Accounts receivable	(760)	424	1,049
Prepaid expenses and other current assets	(585)	392	64
Income tax receivable	(183)	(2,013)	(482)
Accounts payable	417	(281)	(494)
Operating lease liabilities	(1,078)	(914)	0
Accrued expenses	1,387	(1,776)	(671)
Net cash provided by (used in) operating activities	414	(4,083)	4,309
Cash flows from investing activities:
Proceeds from sale of fixed assets		140	0
Proceeds from short-term investments	0	0	3,810
Other assets	(38)	(7)	(56)
Purchases of property and equipment and capitalized software development costs	(182)	(991)	(1,677)
Net cash (used in) provided by investing activities	(220)	(858)	2,077
Cash flows from financing activities:
Cash dividends paid	(279)	(993)	(3,970)
Proceeds from stock options and tax withholding related to vested shares from employee stock plans	(68)	(9)	(33)
Payments of equipment financing	(688)	(678)	(415)
Net cash (used in) provided by financing activities	(1,035)	501	(3,002)
Effect of exchange rate changes on cash		(10)	(170)
Net (decrease) increase in cash and cash equivalents	(841)	(4,450)	3,214
Cash, beginning of year	2,833	7,283	4,069
Cash, end of year	1,992	2,833	7,283
Supplemental disclosures of cash flow information:
Cash paid for income taxes	405	249	2,898
Cash paid for interest	50	75	59
Cash paid for operating leases	1,151	1,038	1,199
Right-of-use assets acquired through operating leases	172	2,346	4,363
Non-cash investing and financing activities:
Purchases of equipment through accounts payable and accrued liabilities		241	1,882
Paycheck Protection Program CARES Act [Member]
Cash flows from financing activities:
Proceeds from long term det		2,181	0
Equipment Loan Arrangement [Member]
Cash flows from financing activities:
Proceeds from long term det	$ 0	$ 0	$ 1,416