Business Combinations (Pro Forma) (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Business Acquisition, Pro Forma Information
Revenue	$ 52,566,000	$ 43,827,000
Net income	17,344,000	15,685,000
Basic EPS	$ 0.47	$ 0.43
Diluted EPS	$ 0.45	$ 0.40
Parent, ADAM, Planetsoft, BSI, Taimma, Fintechnix, TriSystems , Combined [Member] [Domain]
Business Acquisition, Pro Forma Information
Revenue, pro forma	52,566,000	50,892,000
Net income, pro forma	17,344,000	14,743,000
Basic EPS, pro forma	$ 0.47	$ 0.40
Diluted EPS, pro forma	$ 0.45	$ 0.37
Business Acquisition, Pro Forma Revenue, Increase (Decrease)	1,700,000
Business Acquisition, Pro Forma Revenue, Increase (Decrease), Percentage	3.30%
Revenue, Net, Increase (Decrease)	$ 8,700,000
Revenue, Net, Increase (Decrease), Percentage	19.90%