Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income attributable to the Company	$ 80,384	$ 40,591	$ 71,628
Other comprehensive income/ (loss), net of tax:
Unrealized gain/ (loss) on securities available-for-sale	(9,503)	4,719	(11,358)
Reclassification adjustment for net realized (gain)/ loss included in net income	426	(222)	(331)
Net unrealized gain/ (loss) on securities available-for-sale	(9,077)	4,497	(11,689)
Unrealized gain/ (loss) on cash flow hedges	700
Reclassification adjustment for net realized (gain)/ loss included in net income	(646)
Net unrealized gain/ (loss) on cash flow hedges	54
Unrealized gain/ (loss) on cash flow hedges		190	(461)
Reclassification adjustment for net realized (gain)/ loss included in net income		688	979
Net unrealized gain/ (loss) on cash flow hedges		878	518
Unrealized gain/ (loss) on other	296	50	123
Net unrealized gain/ (loss) on other	296	50	123
Other comprehensive income/ (loss), net of tax	(8,727)	5,425	(11,048)
Total comprehensive income attributable to the Company, net	$ 71,657	$ 46,016	$ 60,580