Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
OPERATING ACTIVITIES:
Net income	$ 8,670	$ 1,040
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation and amortization	1,328	855
Stock-based compensation expense	10	57
Provision for deferred income taxes	58
Non-cash interest income		(37)
Equity in loss of affiliate company	103	133
Changes in operating assets and liabilities:
Accounts receivable, net	(12,717)	(1,799)
Other current assets	(1,159)	204
Other long-term assets	(129)	(33)
Accounts payable	832	67
Accrued payroll	1,225	(358)
Deferred revenue, current portion	(1,232)	(528)
Accrued expenses	234	211
Other current liabilities	3,054	(2,239)
Deferred revenue, net of current portion	152	101
Net cash provided by (used for) operating activities	313	(2,326)
INVESTING ACTIVITIES:
Purchases of property and equipment	(2,737)	(1,496)
Advances on notes and interest receivable		(550)
Proceeds from payments on notes receivable	55	18
Net cash used for investing activities	(2,682)	(2,028)
FINANCING ACTIVITIES:
Sale of capital stock pursuant to exercise of option		107
Repurchases of common stock	(2,332)	(2,712)
Net cash used for financing activities	(2,332)	(2,605)
Effects of exchange rate changes on cash	1	4
Net decrease in cash	(4,700)	(6,955)
Cash at beginning of period	29,244	37,956
Cash at end of period	24,544	$ 31,001
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Purchases of property and equipment, accrued but not paid	$ 2,306