Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income attributable to the Company	$ 34,439	$ 36,393
Adjustments to arrive at net income from continuing operations [Abstract]
Net income attributable to noncontrolling interests	1,900	2,492
Less: Net income from discontinued operations	(3,310)	(3,640)
Net income from continuing operations	33,029	35,245
Adjustments to reconcile net income from continuing operations to net cash provided by/(used in) operating activities:
Depreciation and amortization	10,927	11,391
Net income attributable to noncontrolling interests	(1,900)	(2,492)
Equity issued as compensation, net of cancellations	372	4,399
Provision/ (credit) for loan losses	(5,668)	(2,500)
Loans originated for sale	(39,923)	(89,008)
Proceeds from sale of loans held for sale	43,724	77,260
Deferred income tax expense/ (benefit)	4,624	1,300
Net decrease/ (increase) in other operating activities	(3,472)	(20,254)
Net cash provided by/ (used in) operating activities of continuing operations	41,713	15,341
Net cash provided by/ (used in) operating activities of discontinued operations	3,310	3,640
Net cash provided by/ (used in) operating activities	45,023	18,981
Investment securities available for sale:
Purchases	(196,651)	(274,333)
Sales	29,132	5,835
Maturities, calls, redemptions, and principal payments	82,420	99,747
Investment securities held to maturity:
Purchases	0	0
Principal payments	10,698	12,061
(Investments)/ distributions in trusts, net	(392)	(365)
(Purchase)/ redemption of Federal Home Loan Banks stock	(9,193)	(3,387)
Net (increase)/ decrease in portfolio loans	(37,832)	(194,290)
Proceeds from recoveries of loans previously charged-off	5,956	5,025
Proceeds from sale of OREO	958	0
Capital expenditures, net of sale proceeds	(5,053)	(2,489)
Net cash provided by/ (used in) investing activities of continuing operations	(119,957)	(352,196)
Net cash provided by/ (used in) investing activities	(119,957)	(352,196)
Cash flows from financing activities:
Net increase/ (decrease) in deposits	(393,787)	(24,851)
Net increase/ (decrease) in securities sold under agreements to repurchase	(14,911)	(3,836)
Net increase/ (decrease) in federal funds purchased	180,000	100,000
Net increase/ (decrease) in short-term Federal Home Loan Bank borrowings	235,000	120,000
Advances of long-term Federal Home Loan Bank borrowings	47,434	67,636
Repayments of long-term Federal Home Loan Bank borrowings	(65,746)	(16,257)
Dividends paid to common shareholders	(16,602)	(14,882)
Dividends paid to preferred shareholders	(1,738)	(1,738)
Payments for Repurchase of Common Stock	(4,495)	0
Tax benefit/ (deficiency) from certain stock compensation awards	(749)	95
Proceeds from stock option exercises	529	1,025
Proceeds from issuance of common stock, net	0	(569)
Distributions paid to noncontrolling interests	(1,844)	(2,405)
Other equity adjustments	(684)	(513)
Net cash provided by/ (used in) financing activities of continuing operations	(37,593)	223,705
Net cash provided by/ (used in) financing activities	(37,593)	223,705
Net increase/ (decrease) in cash and cash equivalents	(112,527)	(109,510)
Cash and cash equivalents at beginning of year	238,694	172,609
Cash and cash equivalents at end of period	126,167	63,099
Supplementary schedule of non-cash investing and financing activities:
Cash paid for interest	13,646	13,627
Cash paid for income taxes, net of (refunds received)	20,834	23,038
Net unrealized gain/ (loss) on securities available for sale, net of tax	15,140	(1,995)
Net unrealized gain/ (loss) on cash flow hedges, net of tax	(986)	167
Net unrealized gain/ (loss) on other, net of tax	0	0
Loans transferred into other real estate owned from loan portfolio	1,944	0
Loans charged-off	(3,035)	(112)
Premises and equipment transferred into/ (out of) other assets held for sale	891	0
Deposits Held for sale	$ 110,558	$ 0