Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net income	$ 8,196	$ 7,306
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,415	1,283
Deferred income taxes	(25)	328
Reserve for uncertain tax positions	20	52
Non-cash share-based compensation expense	302	454
Net changes in assets and liabilities:
Trade accounts receivable	(3,934)	395
Prepaid expenses and other current assets	(1,004)	(208)
Deferred contract costs, net	(158)	(200)
Operating lease assets and liabilities, net	3
Accounts payable	807	57
Accrued expenses, wages, bonuses and profit sharing	(1,840)	(2,668)
Income taxes receivable and payable	1,531	1,171
Deferred revenue	1,987	258
Net cash provided by operating activities	7,300	8,228
Cash flows from investing activities:
Purchases of property and equipment	(1,134)	(1,298)
Net cash used in investing activities	(1,134)	(1,298)
Cash flows from financing activities:
Borrowings on line of credit	8,500
Payments on line of credit	(6,750)
Payments on notes payable	(918)	(1,067)
Payments on finance lease obligations	(57)	(28)
Payment of employee payroll tax withholdings on share-based awards exercised	(483)	(535)
Payment of dividends on common stock	(17,112)	(4,221)
Net cash used in financing activities	(16,820)	(5,851)
Effect of exchange rate changes on cash	304	(334)
Change in cash and cash equivalents	(10,350)	745
Cash and cash equivalents at beginning of period	12,991	34,733
Cash and cash equivalents at end of period	2,641	35,478
Supplemental disclosure of cash paid for:
Interest, net of capitalized amounts	520	8
Income taxes	147	110
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	$ 633	$ 737