Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 11,755	$ 8,196
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,371	1,415
Deferred income taxes	348	(25)
Reserve for uncertain tax positions	80	20
Non-cash share-based compensation expense	332	302
Net changes in assets and liabilities:
Trade accounts receivable	(5,886)	(3,934)
Prepaid expenses and other current assets	(165)	(1,004)
Insurance receivable	(2,771)
Deferred contract costs, net	(693)	(158)
Operating lease assets and liabilities, net	(4)	3
Accounts payable	(623)	807
Accrued expenses, wages, bonuses and profit sharing	(139)	(1,840)
Income taxes receivable and payable	(886)	1,531
Deferred revenue	2,804	1,987
Net cash provided by operating activities	5,523	7,300
Cash flows from investing activities:
Purchases of property and equipment	(590)	(1,134)
Net cash used in investing activities	(590)	(1,134)
Cash flows from financing activities:
Borrowings on line of credit		8,500
Payments on line of credit		(6,750)
Payments on notes payable	(959)	(918)
Payments on finance lease obligations	(58)	(57)
Payment of employee payroll tax withholdings on share-based awards exercised	(1,280)	(483)
Payment of dividends on common stock	(5,239)	(17,112)
Net cash used in financing activities	(7,536)	(16,820)
Effect of exchange rate changes on cash	(893)	304
Change in cash and cash equivalents	(3,496)	(10,350)
Cash and cash equivalents at beginning of period	13,517	12,991
Cash and cash equivalents at end of period	10,021	2,641
Supplemental disclosure of cash paid for:
Interest, net of capitalized amounts	445	520
Income taxes	70	147
Supplemental disclosure of non-cash investing and financing activities:
Finance lease obligations originated for property and equipment		25
Stock tendered to the Company for cashless exercise of stock options in connection with equity incentive plans	$ 3,145	$ 633