Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income attributable to the Company	$ 21,332	$ 21,328	$ 38,373	$ 34,531
Other comprehensive income/ (loss), net of tax [Abstract]
Unrealized gain/ (loss) on securities available for sale	2,226	(5,362)	3,351	(5,971)
Reclassification adjustment for net realized gain/ (loss) included in net income	0	10	1	16
Net unrealized gain/ (loss) on securities available for sale	2,226	(5,372)	3,350	(5,987)
Unrealized gain/ (loss) on cash flow hedges	(885)	747	(1,472)	684
Reclassification adjustment for net realized gain/ (loss) included in net income	(422)	(270)	(777)	(540)
Net change in unrealized gain/ (loss) on cash flow hedges	(463)	1,017	(695)	1,224
Net unrealized gain/ (loss) on other	0	(286)	0	(442)
Other comprehensive income/ (loss), net of tax	1,763	(4,641)	2,655	(5,205)
Total comprehensive income/ (loss), attributable to the Company, net	$ 23,095	$ 16,687	$ 41,028	$ 29,326