Basis of Presentation and Summary of Significant Accounting Policies - Fair Value, Level 3 Rollforward (Details) - Earn-Out Liability $ in Thousands	6 Months Ended
	Jun. 30, 2015 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 1,710
Payment of 2014 EIM earn-out liability	(1,519)
Non-cash adjustment to 2014 EIM earn-out liability	(191)
Ending balance	$ 0