Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2012		Mar. 31, 2012		Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net income attributable to the Company	$ 17,668	[1]	$ 18,336	[1]	$ 21,328	[1]	$ 13,203	[1]	$ 13,092	[1]	$ 16,513	[1]	$ 14,161	[1]	$ 9,505	[1]	$ 70,535	$ 53,271	$ 39,137
Other comprehensive income/ (loss), net of tax:
Unrealized gain/ (loss) on securities available for sale																	(7,141)	(937)	3,726
Reclassification adjustment for net realized gain included in net income																	28	557	490
Adjustment for discontinued operations																	0	(23)	0
Net unrealized gain/ (loss) on securities available for sale																	(7,169)	(1,471)	3,236
Unrealized gain/ (loss) on cash flow hedges																	2	(878)	(2,830)
Reclassification adjustment for net realized loss included in net income																	(1,204)	(1,015)	(1,095)
Net unrealized gain/ (loss) on cash flow hedges																	1,206	137	(1,735)
Net unrealized gain/ (loss) on other																	(358)	(136)	745
Other comprehensive income/ (loss), net of tax																	(6,321)	(1,470)	2,246
Total comprehensive income attributable to the Company, net																	$ 64,214	$ 51,801	$ 41,383

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