Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
OPERATING ACTIVITIES:
Net income	$ 12,885	$ 6,379
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,636	2,697
Stock-based compensation expense	160	287
Deferred income taxes	312
Non-cash interest income	(18)	(72)
Equity in (income) loss of affiliate company	(195)	214
Changes in operating assets and liabilities:
Accounts receivable, net	(2,268)	(10,812)
Other current assets	(2,620)	(978)
Other long-term assets	(41)	(22)
Accounts payable	600	814
Accrued payroll	336	848
Deferred revenue, current portion	(1,134)	230
Accrued expenses	(54)	26
Other current liabilities	(1,052)	(2,844)
Deferred revenue, net of current portion	310	76
Net cash provided by (used for) operating activities	10,857	(3,157)
INVESTING ACTIVITIES:
Purchases of property and equipment	(7,532)	(3,233)
Advances on notes and interest receivable		(550)
Proceeds from payments on notes receivable	165	110
Purchase of intangible assets		(400)
Purchase of available for sale securities	(988)
Purchase of long-term investment		(1,000)
Net cash used for investing activities	(8,355)	(5,073)
FINANCING ACTIVITIES:
Sale of capital stock pursuant to exercise of option		107
Repurchases of common stock	(5,042)	(9,261)
Net cash used for financing activities	(5,042)	(9,154)
Effects of exchange rate changes on cash	364	(5)
Net decrease in cash	(2,176)	(17,389)
Cash at beginning of period	29,244	37,956
Cash at end of period	27,068	20,567
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for income taxes	5,330	$ 2,626
Purchases of property and equipment, accrued but not paid	$ 207