Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended																12 Months Ended
	Dec. 31, 2017	[1]	Sep. 30, 2017	[1]	Jun. 30, 2017	[1]	Mar. 31, 2017	[1]	Dec. 31, 2016	[1]	Sep. 30, 2016	[1]	Jun. 30, 2016	[1]	Mar. 31, 2016	[1]	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net income attributable to the Company	$ (18,280)		$ 19,803		$ 23,406		$ 15,662		$ 17,552		$ 19,636		$ 16,398		$ 18,041		$ 40,591	$ 71,628	$ 64,925
Other comprehensive income/ (loss), net of tax:
Unrealized gain/ (loss) on securities available-for-sale																	4,719	(11,358)	(1,349)
Reclassification adjustment for net realized (gain)/ loss included in net income																	(222)	(331)	(139)
Net unrealized gain/ (loss) on securities available-for-sale																	4,497	(11,689)	(1,488)
Unrealized gain/ (loss) on cash flow hedges																	190	(461)	(1,554)
Reclassification adjustment for net realized (gain)/ loss included in net income																	688	979	2,354
Net unrealized gain/ (loss) on cash flow hedges																	878	518	800
Unrealized (gain)/ loss on other																	(50)	(123)	115
Net unrealized gain/ (loss) on other																	(50)	(123)	115
Other comprehensive income/ (loss), net of tax																	5,425	(11,048)	(803)
Total comprehensive income attributable to the Company, net																	$ 46,016	$ 60,580	$ 64,122

[1] Due to rounding, the sum of the four quarters may not add to the year to date total.