Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income	$ 12,272	$ 10,065
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,244	2,060
Deferred income taxes	386	926
Reserve for uncertain tax positions	73	(84)
Non-cash share-based compensation expense	792	1,081
Net changes in assets and liabilities:
Trade accounts receivable	(2,217)	(1,225)
Unbilled revenue	(82)	(356)
Prepaid expenses	(1,696)	(637)
Accounts payable	222	74
Accrued expenses, wages, bonuses and profit sharing	(750)	(627)
Income taxes receivable and payable	(1,818)	(1,271)
Deferred revenue	1,194	1,219
Net cash provided by operating activities	10,620	11,225
Cash flows from investing activities:
Purchases of property and equipment	(2,390)	(2,217)
Net cash used in investing activities	(2,390)	(2,217)
Cash flows from financing activities:
Payments on notes payable	(1,433)	(1,192)
Payments on capital lease obligations	(53)	(46)
Cash paid for non-controlling interest		(2,000)
Proceeds from exercise of stock options		547
Payment of employee payroll tax withholdings on share-based awards exercised	(105)	(147)
Payment of dividends on common stock	(8,431)	(21,809)
Net cash used in financing activities	(10,022)	(24,647)
Effect of exchange rate changes on cash	399	686
Change in cash and cash equivalents	(1,393)	(14,953)
Cash and cash equivalents at beginning of period	33,021	42,145
Cash and cash equivalents at end of period	31,628	27,192
Supplemental disclosure of cash paid for:
Interest, net of capitalized amounts	44	118
Income taxes	7,539	5,484
Supplemental disclosure of non-cash investing and financing activities:
Capital lease obligations originated for property and equipment	64	109
Stock tendered to the Company for cashless exercise of stock options in connection with equity incentive plans	$ 2,101	$ 162