Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
OPERATING ACTIVITIES:
Net income	$ 5,448	$ 3,395
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,566	6,256
Stock-based compensation expense	1,308	150
Benefit for deferred income taxes	(974)	(1,573)
Non-cash investment loss	0	1,000
Equity in loss (gain) of affiliate company	684	773
Changes in operating assets and liabilities:
Accounts receivable, net	(2,699)	5,684
Other current assets	(243)	(983)
Other long-term assets	(418)	254
Accounts payable	(355)	(690)
Accrued payroll	684	284
Deferred revenue, current portion	(277)	1,216
Accrued expenses	(248)	446
Other current liabilities	(528)	806
Deferred revenue, net of current portion	(147)	(208)
Net cash provided by operating activities	5,801	16,810
INVESTING ACTIVITIES:
Purchases of property and equipment	(4,908)	(5,245)
Advances on note and interest receivable	(200)	(650)
Purchase of long-term investment	(398)	(655)
Proceeds from payments on notes receivable	203	202
Purchases of marketable securities	(2,186)	(2,521)
Maturities of marketable securities	2,021	2,264
Net cash used in investing activities	(5,468)	(6,605)
us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract
Repurchases of common stock	(7,638)	(3,653)
Net cash used in financing activities	(7,638)	(3,653)
Effects of exchange rate changes on cash	(132)	(33)
Net (decrease) increase in cash	(7,437)	6,519
Cash at beginning of year	26,918	20,399
Cash at end of year	19,481	26,918
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for income taxes	1,978	1,347
Purchases of property and equipment, accrued but not paid	$ 82	$ 461