Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net income	$ 19,470,000	$ 15,589,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,777,000	2,855,000
Deferred income taxes	328,000	472,000
Reserve for uncertain tax positions	143,000	(251,000)
Non-cash share-based compensation expense	473,000	609,000
Loss on disposal of property and equipment		40,000
Net changes in assets and liabilities:
Trade accounts receivable	(8,382,000)	(3,088,000)
Prepaid expenses and other current assets	(557,000)	118,000
Deferred contract costs, net	(379,000)	(259,000)
Operating lease assets and liabilities, net	(1,000)	(4,000)
Accounts payable	(338,000)	432,000
Accrued expenses, wages, bonuses and profit sharing	713,000	(222,000)
Income taxes receivable and payable	(263,000)	(881,000)
Deferred revenue	(81,000)	696,000
Net cash provided by operating activities	13,903,000	16,106,000
Cash flows from investing activities:
Purchases of property and equipment	(1,427,000)	(2,280,000)
Net cash used in investing activities	(1,427,000)	(2,280,000)
Cash flows from financing activities:
Borrowings on line of credit		16,500,000
Payments on line of credit		(15,500,000)
Payments on notes payable	(1,600,000)	(1,837,000)
Payments on finance lease obligations	(124,000)	(161,000)
Proceeds from the exercise of stock options	538,000
Payment of employee payroll tax withholdings on share-based awards exercised	(1,859,000)	(483,000)
Payment of dividends on common stock	(10,517,000)	(21,837,000)
Net cash used in financing activities	(13,562,000)	(23,318,000)
Effect of exchange rate changes on cash	(474,000)	521,000
Change in cash and cash equivalents	(1,560,000)	(8,971,000)
Cash and cash equivalents at beginning of period	13,517,000	12,991,000
Cash and cash equivalents at end of period	11,957,000	4,020,000
Supplemental disclosure of cash paid for:
Interest, net of capitalized amounts	884,000	1,066,000
Income taxes	261,000	4,404,000
Supplemental disclosure of non-cash investing and financing activities:
Finance lease obligations originated for property and equipment	105,000	167,000
Stock tendered to the Company for cashless exercise of stock options in connection with equity incentive plans	$ 4,644,000	$ 770,000