Acquisitions - Intangible Assets Acquired (Details) - USD ($) $ in Thousands				12 Months Ended
		Oct. 15, 2015	Apr. 14, 2014	Dec. 31, 2016
DAMI | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangibles (in years)				5 years
DAMI | Non-Compete Agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated useful lives of intangibles (in years)				5 years
DAMI | Subsidiaries
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 2,900
DAMI | Subsidiaries | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		2,550
Estimated useful lives of intangibles (in years)				5 years
DAMI | Subsidiaries | Non-Compete Agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired		$ 350
Estimated useful lives of intangibles (in years)				5 years
Progressive
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	[1]		$ 325,000
Progressive | Internal Use Software
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired			14,000
Estimated useful lives of intangibles (in years)				3 years
Progressive | Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired			66,000
Estimated useful lives of intangibles (in years)				10 years
Progressive | Customer Lease Contracts
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired			11,000
Estimated useful lives of intangibles (in years)				1 year
Progressive | Merchant Relationships
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired			181,000
Estimated useful lives of intangibles (in years)				12 years
Progressive | Trade Names and Trademarks
Acquired Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived Intangible Assets Acquired			$ 53,000

[1] Acquired definite-lived intangible assets have a total weighted average life of 10.6 years.