Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest (income)/ expense	$ 18,486	$ 10,973
Income tax expense/ (benefit)	4,917	6,026
Net (income)/ loss attributable to the Company	(19,442)	(22,686)
Hedges related to deposits and borrowings:
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total reclassifications for the period, net of tax	220	14
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total reclassifications for the period, net of tax	220	14
Reclassification out of Accumulated Other Comprehensive Income | Hedges related to deposits and borrowings:
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest (income)/ expense	311	21
Income tax expense/ (benefit)	91	7
Net (income)/ loss attributable to the Company	$ 220	$ 14