Consolidated Statement of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash flows from operating activities:
Net income attributable to the Company	$ 40,591	$ 71,628	$ 64,925
Adjustments to arrive at net income/(loss) from continuing operations
Net income attributable to noncontrolling interests	(4,468)	(4,157)	(4,407)
Net pre-tax gain from operating activities of discontinued operations	8,326	9,452	11,234
Tax expense from discontinued operations	3,456	3,911	4,823
Net income from continuing operations	40,189	70,244	62,921
Adjustments to reconcile net income/(loss) from continuing operations to net cash provided by/(used in) operating activities:
Depreciation and amortization	21,023	23,441	22,187
Net income attributable to noncontrolling interests	(4,468)	(4,157)	(4,407)
Stock compensation, net of cancellations	8,275	4,112	9,820
Impairment of goodwill	24,901	9,528	0
Provision/ (credit) for loan losses	(7,669)	(6,935)	(1,555)
Loans originated for sale	(53,287)	(80,539)	(153,445)
Proceeds from sale of loans held for sale	52,508	85,814	153,679
Gain/ (loss) on sale of affiliates or offices	1,264	(2,862)	0
Deferred income tax expense/ (benefit)	22,845	2,777	(4,575)
Net decrease/(increase) in other operating activities	(8,466)	(817)	2,852
Net cash provided by/(used in) operating activities of continuing operations	97,115	100,606	87,477
Net cash provided by/(used in) operating activities of discontinued operations	4,870	5,541	6,411
Net cash provided by/(used in) operating activities	101,985	106,147	93,888
Investment securities available-for-sale:
Purchases of investment securities available-for-sale	177,021	422,315	506,529
Sales of investment securities available-for-sale	148,407	50,049	34,160
Maturities, redemptions, and principal payments of investment securities available-for-sale	120,546	165,768	208,467
Investment securities held-to-maturity:
Purchases of investment securities held-to-maturity	(14,945)	0	0
Principal payments of investment securities held-to-maturity	32,912	22,522	23,741
(Investments)/distributions in trusts, net	(952)	(508)	(165)
Purchase of additional Bank Owned Life Insurance (BOLI)	50,000	0	0
(Purchase)/ redemption of Federal Home Loan Bank and Federal Reserve Bank stock	(15,896)	(8,896)	(2,900)
Net increase in portfolio loans	(390,003)	(403,670)	(452,675)
Proceeds from recoveries of loans previously charged-off	5,197	10,461	6,253
Proceeds from sale of OREO	1,644	1,337	277
Distributions related to sale of offices	0	(98,517)	0
Capital expenditures, net of sale proceeds	(14,204)	(9,011)	(5,419)
Net cash provided by/(used in) investing activities	(354,315)	(692,780)	(694,790)
Cash flows from financing activities:
Net increase in deposits	425,100	148,303	586,558
Net (decrease)/increase in securities sold under agreements to repurchase and other	(27,455)	1,409	27,719
Net (decrease)/increase in short-term Federal Home Loan Bank borrowings	40,000	310,000	40,000
Net increase/ (decrease) in federal funds purchased	(50,000)	80,000	0
Advances of long-term Federal Home Loan Bank borrowings	50,110	134,779	123,636
Repayments of long-term Federal Home Loan Bank borrowings	(130,634)	(171,898)	(72,462)
Repurchase of common stock	0	(9,323)	0
Dividends paid to common shareholders	(37,054)	(33,110)	(29,608)
Dividends paid to preferred shareholders	(3,475)	(3,475)	(3,475)
Tax benefit/ (deficiency) from certain stock compensation awards	0	(620)	(1,262)
Proceeds from warrant exercises	3,003	0	0
Proceeds from stock option exercises	882	1,725	1,206
Proceeds from issuance of common stock, net	171	842	(515)
Distributions paid to noncontrolling interests	(4,360)	(4,054)	(4,611)
Other equity adjustments	26	(82)	(199)
Net cash provided by/(used in) financing activities	266,314	454,496	666,987
Net increase/(decrease) in cash and cash equivalents	13,984	(132,137)	66,085
Cash and cash equivalents at beginning of year	106,557	238,694	172,609
Cash and cash equivalents at end of period	120,541	106,557	238,694
Supplementary schedule of non-cash investing and financing activities:
Cash paid for interest	33,502	27,415	27,749
Cash paid for income taxes, net of (refunds received)	32,159	33,078	33,318
Change in unrealized gain/ (loss) on securities available-for-sale, net of tax	4,497	(11,689)	(1,488)
Change in unrealized gain/ (loss) on cash flow hedges, net of tax	878	518	800
Change in unrealized gain/ (loss) on other, net of tax	(50)	(123)	115
Transfer of net assets into held for sale	58,034	0	0
Loans charged-off	(863)	(3,949)	(2,036)
Loans transferred into/(out of) other real estate owned from/(to) held for sale or portfolio	0	1,944	0
Reversal of contingent consideration	$ 0	$ 0	$ 2,026