Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities:
Net income	$ 25,159,000	$ 27,833,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and impairment	3,902,000	5,016,000
Deferred income taxes	(1,765,000)	(120,000)
Reserve for uncertain tax positions	336,000	210,000
Non-cash share-based compensation expense	910,000	275,000
Loss on disposal of property and equipment	1,000	1,000
Net changes in assets and liabilities:
Trade accounts receivable	(1,655,000)	(2,188,000)
Prepaid expenses and other current assets	(97,000)	231,000
Deferred contract costs, net	988,000	318,000
Operating lease assets and liabilities, net	(9,000)	17,000
Accounts payable	(557,000)	(207,000)
Accrued expenses, wages and bonuses	127,000	(202,000)
Income taxes receivable and payable	660,000	1,604,000
Deferred revenue	161,000	1,482,000
Net cash provided by operating activities	28,161,000	34,270,000
Cash flows from investing activities:
Purchases of property and equipment	(7,869,000)	(3,797,000)
Acquisition consideration		(3,000,000)
Net cash used in investing activities	(7,869,000)	(6,797,000)
Cash flows from financing activities:
Payments on notes payable	(3,208,000)	(3,049,000)
Payments on finance lease obligations	(355,000)	(369,000)
Proceeds from the exercise of share-based awards		304,000
Payment of employee payroll tax withholdings on share-based awards exercised	(190,000)	(461,000)
Repurchase of shares for treasury	(25,299,000)
Payments of deferred acquisition consideration	(1,950,000)
Payment of dividends on common stock	(15,035,000)	(6,105,000)
Net cash used in financing activities	(46,037,000)	(9,680,000)
Effect of exchange rate changes on cash and cash equivalents	(224,000)	(1,000)
Change in cash and cash equivalents	(25,969,000)	17,792,000
Cash and cash equivalents at beginning of period	54,361,000	34,690,000
Cash and cash equivalents at end of period	28,392,000	52,482,000
Supplemental disclosure of cash paid for:
Interest expense, net of capitalized amounts	1,028,000	1,186,000
Income taxes	8,947,000	6,601,000
Supplemental disclosure of non-cash investing and financing activities:
Stock tendered to the Company for cashless exercise of stock options in connection with equity incentive plans	$ 311,000	749,000
Deferred acquisition consideration		$ 1,950,000