Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest and Dividend Income
Interest and fees on loans and loans held for sale	$ 71,091	$ 62,150	$ 57,542
Interest on investment securities available for sale	4,832	6,572	5,481
Dividends on marketable equity securities	466	439	348
Interest on investment securities held to maturity	18	0	0
Dividends on Federal Home Loan Bank stock	84	76	64
Interest on deposits in other banks	225	846	742
Total Interest Income	76,716	70,083	64,177
Interest Expense
Interest expense on deposits	5,279	4,961	2,307
Interest expense on securities sold under agreements to repurchase	0	40	50
Interest expense on borrowings	387	251	223
Interest expense on junior subordinated debentures	385	389	389
Total Interest Expense	6,051	5,641	2,969
Net Interest Income	70,665	64,442	61,208
Provision (benefit) for loan losses	2,432	(1,175)	(500)
Net Interest Income After Provision (Benefit) for Loan Losses	68,233	65,617	61,708
Other Operating Income
Mortgage banking income	52,635	24,201	20,844
Purchased receivable income	2,650	3,271	3,255
Interest rate swap income	949	964	84
Commercial servicing revenue	527	624	1,422
Gain on sale of marketable equity securities, net	98	0	0
Unrealized gain (loss) on marketable equity securities	61	911	(625)
Gain on sale of investment securities available for sale, net	0	23	0
Other income	2,469	2,819	2,868
Total Other Operating Income	63,328	37,346	32,167
Other Operating Expense
Salaries and other personnel expense	61,137	51,317	44,650
Data processing expense	7,668	7,128	6,035
Occupancy expense	6,624	6,607	6,136
Professional and outside services	3,157	2,531	2,453
Marketing expense	2,320	2,373	2,318
Insurance expense	1,228	557	862
Intangible asset amortization expense	48	60	70
Compensation expense - RML acquisition payments	0	468	0
Impairment of equity method investment	0	0	804
OREO (income) expense, net of rental income and gains on sale	(242)	(193)	258
Other operating expense	7,174	5,990	6,214
Total Other Operating Expense	89,114	76,838	69,800
Income Before Provision for Income Taxes	42,447	26,125	24,075
Provision for income taxes	9,559	5,434	4,071
Net Income	$ 32,888	$ 20,691	$ 20,004
Earnings per share, Basic (in USD per share)	$ 5.18	$ 3.08	$ 2.91
Earnings per share, Diluted (in USD per share)	$ 5.11	$ 3.04	$ 2.86
Weighted Average Shares Outstanding, Basic (in shares)	6,354,687	6,708,622	6,877,573
Weighted Average Shares Outstanding, Diluted (in shares)	6,431,367	6,808,209	6,981,557
Bankcard fees
Other Operating Income
Revenue from contract with customer	$ 2,837	$ 2,976	$ 2,811
Service charges on deposit accounts
Other Operating Income
Revenue from contract with customer	$ 1,102	$ 1,557	$ 1,508