Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income	$ 10,065,000	$ 7,544,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,060,000	2,039,000
Deferred income taxes	888,000	(511,000)
Non-cash share-based compensation expense	1,081,000	553,000
Tax benefit from exercise of stock options	38,000	14,000
Non-cash change in uncertain tax positions	(84,000)	39,000
Write off of purchase option		657,000
Net changes in assets and liabilities:
Trade accounts receivable	(1,225,000)	(2,267,000)
Unbilled revenue	(356,000)	(339,000)
Prepaid expenses	(637,000)	(596,000)
Accounts payable	74,000	506,000
Accrued expenses, wages, bonuses and profit sharing	(627,000)	(491,000)
Income taxes receivable and payable	(1,271,000)	221,000
Deferred revenue	1,219,000	1,864,000
Net cash provided by operating activities	11,225,000	9,233,000
Cash flows from investing activities:
Purchases of property and equipment	(2,217,000)	(1,632,000)
Net cash used in investing activities	(2,217,000)	(1,632,000)
Cash flows from financing activities:
Payments on notes payable	(1,192,000)	(1,156,000)
Payments on capital lease obligations	(46,000)	(98,000)
Proceeds from exercise of stock options	547,000
Common stock withheld for payroll tax on share based compensation	(147,000)	(92,000)
Cash paid for non-controlling interest	(2,000,000)
Excess tax benefit from share-based compensation		100,000
Purchase of treasury stock		(271,000)
Payment of dividends on common stock	(21,809,000)	(5,029,000)
Net cash used in financing activities	(24,647,000)	(6,546,000)
Effect of exchange rate changes on cash	686,000	(542,000)
Increase (decrease) in cash and cash equivalents	(14,953,000)	513,000
Cash and cash equivalents at beginning of period	42,145,000	40,042,000
Cash and cash equivalents at end of period	27,192,000	40,555,000
Supplemental disclosure of cash paid for:
Interest, net of capitalized amounts	118,000	113,000
Income taxes	$ 5,484,000	$ 4,762,000