Consolidated Statement of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest and dividend income:
Loans	$ 262,525	$ 228,964	$ 201,349
Taxable investment securities	6,007	6,393	6,230
Non-taxable investment securities	7,094	6,622	5,754
Mortgage-backed securities	12,091	13,391	12,416
Short-term investments and other	5,187	3,325	1,890
Total interest and dividend income	292,904	258,695	227,639
Interest expense:
Deposits	39,846	20,884	16,571
Federal Home Loan Bank borrowings	13,787	9,883	8,008
Junior subordinated debentures	3,925	2,919	2,427
Repurchase agreements and other short-term borrowings	780	323	195
Total interest expense	58,338	34,009	27,201
Net interest income	234,566	224,686	200,438
Provision/ (credit) for loan losses	(2,198)	(7,669)	(6,935)
Net interest income after provision/ (credit) for loan losses	236,764	232,355	207,373
Fees and other income:
Other banking fee income	9,826	8,915	12,050
Gain on sale of loans, net	243	451	667
Gain/ (loss) on sale of investments, net	(613)	376	521
Gain/ (loss) on OREO, net	0	(46)	306
Gain/ (loss) on sale of affiliates or offices	18,142	(1,264)	2,862
Other	853	2,098	3,410
Total fees and other income	149,997	153,966	158,787
Operating expense:
Salaries and employee benefits	161,468	178,501	164,683
Occupancy and equipment	32,116	30,165	28,007
Professional services	13,155	13,763	11,576
Marketing and business development	7,648	7,766	7,626
Information systems	25,185	21,796	19,229
Amortization of intangibles	2,929	5,601	6,282
Impairment of goodwill	0	24,901	9,528
FDIC insurance	2,865	2,969	3,484
Restructuring	7,828	0	2,017
Other	14,161	14,474	12,521
Total operating expense	267,355	299,936	264,953
Income before income taxes	119,406	86,385	101,207
Income tax expense	37,537	46,196	30,963
Net income from continuing operations	81,869	40,189	70,244
Net income from discontinued operations	2,002	4,870	5,541
Net income before attribution to noncontrolling interests	83,871	45,059	75,785
Less: Net income attributable to noncontrolling interests	3,487	4,468	4,157
Net income attributable to the Company	80,384	40,591	71,628
Adjustments to net income attributable to the Company to arrive at net income attributable to common shareholders	(1,682)	(4,887)	(4,063)
Net income attributable to common shareholders for earnings per share calculation	$ 78,702	$ 35,704	$ 67,565
Per share data - Basic earnings per share from:
From continuing operations: (in dollars per share)	$ 0.92	$ 0.37	$ 0.76
From discontinued operations: (in dollars per share)	0.02	0.06	0.07
Total attributable to common shareholders: (in dollars per share)	$ 0.94	$ 0.43	$ 0.83
Weighted average basic common shares outstanding (in shares)	83,596,685	82,430,633	81,264,273
Per share data - Diluted earnings per share from:
From continuing operations: (in dollars per share)	$ 0.90	$ 0.36	$ 0.74
From discontinued operations: (in dollars per share)	0.02	0.06	0.07
Total attributable to common shareholders: (in dollars per share)	$ 0.92	$ 0.42	$ 0.81
Weighted average diluted common shares outstanding (in shares)	85,331,314	84,802,565	83,209,126
Investment management fees
Fees and other income:
Revenue from contracts with customers	$ 21,728	$ 45,515	$ 44,410
Wealth advisory fees
Fees and other income:
Revenue from contracts with customers	53,311	52,559	50,581
Wealth management and trust fees
Fees and other income:
Revenue from contracts with customers	$ 46,507	$ 45,362	$ 43,980