Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest income:
Real estate secured loans	$ 51,510	$ 46,011
Commercial loans	19,126	16,820
Consumer loans	4,905	5,014
Available for sale debt securities, equity securities and Federal Home Loan Bank Stock	7,251	6,563
Held to maturity debt securities	3,144	3,248
Deposits, Federal funds sold and other short-term investments	395	257
Total interest income	86,331	77,913
Interest expense:
Deposits	6,235	4,452
Borrowed funds	6,819	6,426
Total interest expense	13,054	10,878
Net interest income	73,277	67,035
Provision for loan losses	5,400	1,500
Net interest income after provision for loan losses	67,877	65,535
Non-interest income:
Fees	6,639	6,005
Wealth management income	4,400	4,213
Bank-owned life insurance	1,264	1,389
Net gain on securities transactions	1	0
Other income	1,003	858
Total non-interest income	13,307	12,465
Non-interest expense:
Compensation and employee benefits	27,869	26,848
Net occupancy expense	6,745	6,955
Data processing expense	3,606	3,457
FDIC insurance	1,053	1,099
Amortization of intangibles	570	752
Advertising and promotion expense	967	857
Other operating expenses	6,100	6,156
Total non-interest expense	46,910	46,124
Income before income tax expense	34,274	31,876
Income tax expense	6,361	8,368
Net income	$ 27,913	$ 23,508
Basic earnings per share (usd per share)	$ 0.43	$ 0.37
Weighted average basic shares outstanding (in shares)	64,768,977	64,167,376
Diluted earnings per share (usd per share)	$ 0.43	$ 0.37
Weighted average diluted shares outstanding (in shares)	64,949,442	64,369,605