Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net income	$ 14,793,000	$ 11,683,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,146,000	3,109,000
Deferred income taxes	905,000	(530,000)
Non-cash share-based compensation expense	1,548,000	925,000
Non-cash change in uncertain tax positions	(42,000)	36,000
Write off of purchase option		657,000
Net changes in assets and liabilities:
Trade accounts receivable	(4,197,000)	(5,101,000)
Unbilled revenue	141,000	35,000
Prepaid expenses	(315,000)	(279,000)
Accounts payable	73,000	247,000
Accrued expenses, wages, bonuses and profit sharing	(90,000)	1,010,000
Income taxes receivable and payable	(476,000)	53,000
Deferred revenue	2,533,000	2,931,000
Net cash provided by operating activities	18,019,000	14,776,000
Cash flows from investing activities:
Purchases of property and equipment	(3,066,000)	(2,207,000)
Net cash used in investing activities	(3,066,000)	(2,207,000)
Cash flows from financing activities:
Payments on notes payable	(1,795,000)	(1,740,000)
Payments on capital lease obligations	(73,000)	(148,000)
Proceeds from exercise of stock options	491,000
Common stock withheld for payroll tax on share based compensation	(147,000)	(92,000)
Cash paid for non-controlling interest	(2,000,000)	(2,789,000)
Excess tax benefit from share-based compensation		107,000
Purchase of treasury stock		(1,629,000)
Payment of dividends on common stock	(25,180,000)	(7,545,000)
Net cash used in financing activities	(28,704,000)	(13,836,000)
Effect of exchange rate changes on cash	484,000	(1,195,000)
Decrease in cash and cash equivalents	(13,267,000)	(2,462,000)
Cash and cash equivalents at beginning of period	42,145,000	40,042,000
Cash and cash equivalents at end of period	28,878,000	37,580,000
Supplemental disclosure of cash paid for:
Interest, net of capitalized amounts	152,000	162,000
Income taxes	$ 7,254,000	$ 7,339,000