Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash flows from operating activities:
Net income	$ 15,068,000	$ 11,564,000	$ 8,499,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,699,000	5,065,000	4,704,000
Deferred income taxes	(421,000)	1,297,000	614,000
(Gain) Loss on sale of property and equipment	4,000	(1,000)	1,000
Tax benefit from exercise of stock options	601,000	66,000	33,000
Non-cash stock compensation expense	388,000	763,000	779,000
Change in assets and liabilities, net of effect of acquisitions:
Trade accounts receivable	(879,000)	(2,064,000)	(2,489,000)
Unbilled revenue	(11,000)	194,000	91,000
Prepaid expenses	(357,000)	253,000	1,425,000
Other current assets	(106,000)	(121,000)	429,000
Accounts payable	(516,000)	52,000	(1,391,000)
Accrued expenses, wages, bonus and profit sharing	1,602,000	1,176,000	113,000
Income taxes payable and recoverable	(303,000)	1,420,000	(442,000)
Deferred revenue	(637,000)	(1,183,000)	2,237,000
Net cash provided by operating activities	19,132,000	18,481,000	14,603,000
Cash flows from investing activities:
Purchases of property and equipment	(2,348,000)	(2,812,000)	(1,539,000)
Acquisitions, net of cash acquired and earn-out on acquisitions		(4,115,000)	(15,441,000)
Net cash used in investing activities	(2,348,000)	(6,927,000)	(16,980,000)
Cash flows from financing activities:
Proceeds from notes payable		4,545,000	11,300,000
Payments on notes payable	(2,050,000)	(6,218,000)	(2,799,000)
Payments on capital lease obligations	(108,000)	(130,000)	(43,000)
Proceeds from exercise of stock options	1,283,000	568,000	274,000
Excess tax benefit from share-based compensation	2,078,000	407,000	46,000
Purchase of treasury stock			(399,000)
Repurchase of shares for payroll tax withholdings related to share-based compensation	(527,000)	(146,000)	(64,000)
Payment of dividends on common stock	(17,363,000)	(5,912,000)	(5,061,000)
Net cash (used in) provided by financing activities	(16,687,000)	(6,886,000)	3,254,000
Effect of exchange rate changes on cash	107,000	(105,000)	130,000
Net increase in cash and cash equivalents	204,000	4,563,000	1,007,000
Cash and cash equivalents at beginning of period	8,082,000	3,519,000	2,512,000
Cash and cash equivalents at end of period	8,286,000	8,082,000	3,519,000
Supplemental disclosure of cash paid for:
Interest expense, net of capitalized amounts	554,000	542,000	497,000
Income taxes	$ 5,108,000	$ 3,383,000	$ 4,549,000