Summary of Significant Accounting Policies - Amortized Finite-Lived Intangible Assets Estimated Useful lives (Details)	12 Months Ended
	Dec. 31, 2015
Customer Relationships | Minimum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives	6 years
Customer Relationships | Maximum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives	10 years
Backlog
Finite Lived Intangible Assets [Line Items]
Estimated useful lives	1 year
Developed Technology
Finite Lived Intangible Assets [Line Items]
Estimated useful lives	5 years
Trade Names | Minimum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives	4 months
Trade Names | Maximum
Finite Lived Intangible Assets [Line Items]
Estimated useful lives	5 years