Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Net income	$ 3,131	$ 11,526
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation and amortization	3,655	2,333
Stock-based compensation expense	150	160
Deferred income taxes	22	72
Equity in loss (gain) of affiliate company	686	(157)
Changes in operating assets and liabilities:
Accounts receivable, net	7,110	(10,655)
Other current assets	(449)	(688)
Other long-term assets	362	(236)
Accounts payable	(489)	611
Accrued payroll	115	(194)
Deferred revenue, current portion	630	(1,001)
Accrued expenses	352	160
Other current liabilities	(44)	(827)
Deferred revenue, net of current portion	(110)	254
Net cash provided by operating activities	15,121	1,358
INVESTING ACTIVITIES:
Purchases of property and equipment	(4,013)	(5,760)
Proceeds from payments on notes receivable	110	110
Purchase of marketable securities	(852)	0
Maturities of marketable securities	726	0
Net cash used for investing activities	(4,029)	(5,650)
FINANCING ACTIVITIES:
Repurchases of common stock	(439)	(3,679)
Net cash used for financing activities	(439)	(3,679)
Effects of exchange rate changes on cash	(47)	243
Net increase (decrease) in cash	10,606	(7,728)
Cash at beginning of period	20,399	29,244
Cash at end of period	31,005	21,516
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid during the period for income taxes	920	5,330
Purchases of property and equipment, accrued but not paid	$ 110	$ 1,093