Acquisitions - Components of Consideration Paid (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 06, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Initial cash consideration, net of cash acquired		$ 32,174	$ 0	$ 0
EdgeRock Technologies, LLC [Member]
Business Acquisition [Line Items]
Initial cash consideration, net of cash acquired	$ 31,294
Working capital adjustment	2,108
Estimated contingent earnout	833
Total purchase consideration	$ 34,235