Business Combinations (Details) (USD $)	3 Months Ended		6 Months Ended			0 Months Ended	1 Months Ended	6 Months Ended				0 Months Ended	5 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011	Jun. 02, 2012 Planetsoft	Jun. 30, 2012 Planetsoft	Jun. 30, 2012 Planetsoft	Jun. 02, 2012 Planetsoft Customer Relationships [Member]	Jun. 02, 2012 Planetsoft Technology [Member]	Jun. 02, 2012 Planetsoft Final Allocation [Member]	Feb. 07, 2011 ADAM	Jun. 30, 2011 ADAM	Jun. 30, 2012 ADAM	Feb. 07, 2011 ADAM Unexercised Stock Options [Member]	Feb. 07, 2011 ADAM Customer Relationships [Member]	Feb. 07, 2011 ADAM Technology [Member]	Feb. 07, 2011 ADAM Trademarks [Member]	Feb. 07, 2011 ADAM Final Allocation [Member]	Jun. 30, 2012 Fair Value, Inputs, Level 2 [Member] Fair Value, Measurements, Recurring [Member] Planetsoft	Jun. 02, 2012 Fair Value, Inputs, Level 2 [Member] Fair Value, Measurements, Recurring [Member] Planetsoft	May 31, 2012 Fair Value, Inputs, Level 2 [Member] Fair Value, Measurements, Recurring [Member] Planetsoft
Business Acquisition [Line Items]
Revenue	$ 47,716,000	$ 42,267,000	$ 91,543,000	$ 82,317,000				$ 1,700,000						$ 12,200,000
Business acquisition, termination fee received for failed acquisition			971,000
Business acquisition, number of common shares issued						296,560						3,650,000
Business acquisition, price per share						$ 16.86
Share subscribed for business acquisition, Value			5,000,000			5,000,000
Put option, price to repurchase shares, discount							10.00%
Put option, exercise period							30 days
Put option, vesting period required prior to exercise							2 years
Put option liability	1,114,000		1,114,000		0															1,100,000	1,400,000	1,400,000
Fair value of equity issued in business acquisition												87,500,000
Business acquisition, cost of acquired entity, cash paid						35,000,000									944,000
Business acquisition, acquiree revenue since acquisition date													10,600,000
Business acquisition, purchase price allocation, intangible assets (excluding goodwill)									11,600,000	550,000						15,400,000	2,100,000	2,000,000
Business acquisition, fair value of contingent consideration						11,100,000
Business acquisition, purchase price allocation, goodwill											44,300,000								60,100,000
Reduction of acquisition earnout accruals			$ 0	$ (1,868,000)