Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 15,254	$ 12,272
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,608	2,244
Deferred income taxes	996	386
Reserve for uncertain tax positions	92	73
Non-cash share-based compensation expense	995	792
Impairment of property and equipment	2
Net changes in assets and liabilities:
Trade accounts receivable and unbilled revenue	3,955	(2,299)
Prepaid expenses and other current assets	(2,393)	(1,696)
Deferred contract costs, net	2
Accounts payable	481	222
Accrued expenses, wages, bonuses and profit sharing	(2,371)	(750)
Income taxes receivable and payable	(1,235)	(1,818)
Deferred revenue	5	1,194
Net cash provided by operating activities	18,391	10,620
Cash flows from investing activities:
Purchases of property and equipment	(2,773)	(2,390)
Net cash used in investing activities	(2,773)	(2,390)
Cash flows from financing activities:
Payments related to Recapitalization	(72,370)
Proceeds from issuance of note payable	40,000
Borrowings on line of credit	1,000
Payments on line of credit	(1,000)
Payment of debt issuance costs	(187)
Payments on notes payable	(1,286)	(1,433)
Payments on capital lease obligations	(58)	(53)
Payment of employee payroll tax withholdings on share-based awards exercised	(712)	(105)
Payment of dividends on common stock	(8,445)	(8,431)
Net cash used in financing activities	(43,058)	(10,022)
Effect of exchange rate changes on cash	(595)	399
Change in cash and cash equivalents	(28,035)	(1,393)
Cash and cash equivalents at beginning of period	34,733	33,021
Cash and cash equivalents at end of period	6,698	31,628
Supplemental disclosure of cash paid for:
Interest, net of capitalized amounts	256	44
Income taxes	1,703	7,539
Supplemental disclosure of non-cash investing and financing activities:
Common stock (formerly class A) issued in the Recapitalization in exchange for then-existing class B shares and options.	121,371
Capital lease obligations originated for property and equipment	210	64
Stock tendered to the Company for cashless exercise of stock options in connection with equity incentive plans	$ 4,919	$ 2,101