Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Gains on sales of loans	$ 3,322	$ 1,660	$ 1,329
Gains on customer swap transactions	4,719	3,231	1,992
Title insurance income	177	183	195
Other income	438	1,463	295
Total	5,334	4,877	2,482
Revenue not from contracts with customers	3,386	2,836	2,391
Total Noninterest Income	27,110	26,796	22,310
Products and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	23,649	23,885	19,844
Products and services transferred over time
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	75	75	75
Deposit Related Fees and Charges
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	9,148	11,205	10,584
Debit card interchange income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	5,431	5,719	5,150
Overdraft charges
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	2,582	4,052	3,938
ATM service charges
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	522	826	830
Demand deposit fees and charges
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	540	501	540
Savings service charges
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	73	107	126
Commissions and Fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	5,920	6,218	5,524
Loan fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	1,227	1,510	1,264
Wire transfer charges
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	1,412	1,223	1,093
Investment services income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	1,630	1,651	1,314
Merchant fees
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	833	813	784
Commissions from sales of checks
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	292	407	434
Safe deposit income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	345	364	371
Other income
Disaggregation of Revenue [Line Items]
Revenue from contract with customer, excluding assessed tax	$ 181	$ 250	$ 264

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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The net gain (loss) resulting from a sale of loans, including adjustments to record loans classified as held-for-sale at the lower-of-cost-or-market and fair value adjustments to loan held for investment purposes.

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