Goodwill and Intangibles - Activity (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Summary of activity within intangible assets
Balance as of beginning of period	$ 219,248
Acquisition of indefinite-lived intangibles	1,917
Amortization	(15,312)
Foreign exchange loss	(3,507)
Impairment	(758)
Changes in fair value due to changes in inputs and assumptions	(16,434)
Measurement period adjustments	(802)
Balance as of end of period	191,366
Future amortization expense for the European servicing rights, in-place lease intangible assets and favorable lease intangible assets
2017 (remainder of)	15,038
2018	27,101
2019	20,672
2020	15,504
2021	13,290
Thereafter	61,113
Total	152,718
In-place lease
Summary of activity within intangible assets
Balance as of beginning of period	136,877
Acquisition of indefinite-lived intangibles	1,821
Amortization	(13,364)
Foreign exchange loss	(2,769)
Impairment	(758)
Measurement period adjustments	(821)
Balance as of end of period	126,524
Favorable lease
Summary of activity within intangible assets
Balance as of beginning of period	27,289
Acquisition of indefinite-lived intangibles	96
Amortization	(1,948)
Foreign exchange loss	(738)
Measurement period adjustments	19
Balance as of end of period	26,194
Domestic servicing rights
Summary of activity within intangible assets
Balance as of beginning of period	55,082
Changes in fair value due to changes in inputs and assumptions	(16,434)
Balance as of end of period	$ 38,648