Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest (expense)	$ 21,268	$ 14,010	$ 39,754	$ 24,983
Income tax (expense)/ benefit	5,369	17,399	10,286	23,425
Net income/ (loss) attributable to the Company	(19,380)	(6,434)	(38,822)	(29,120)
Hedges related to deposits and borrowings:
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total reclassifications for the period, net of tax			356	201
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total reclassifications for the period, net of tax	136	187	356	201
Reclassification out of Accumulated Other Comprehensive Income | Hedges related to deposits and borrowings:
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest (expense)	191	263	502	284
Income tax (expense)/ benefit	(55)	(76)	(146)	(83)
Net income/ (loss) attributable to the Company	$ 136	$ 187	$ 356	$ 201