Acquisitions (Summary of Purchase Price) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	1 Months Ended		0 Months Ended
	Jan. 31, 2013	Oct. 19, 2011	Nov. 07, 2011	Dec. 02, 2013
Business Acquisition [Line Items]
Business Acquisition Post-Closing Working Capital Adjustment Payment	$ 1,296
Business Acquisition Imputed Interest on Post-Closing Working Capital Adjustment Payment	82
GradeBeam, LLC [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net		9,969
Cash consideration		10
Submittal Exchange [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net			15,355
Cash consideration			2,404
Liabilities assumed			403
Issuance of equity			12,548
Total purchase price			15,355
Shares issued in acquisition			482
Share price			$ 26.05
PlanSwift, LLC [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	10,101
Cash consideration	989
Liabilities assumed	1,214
Issuance of equity	7,898
Total purchase price	10,101
Shares issued in acquisition	539
Latista [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net				$ 34,875