Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation Of Revenue [Line Items]
TOTAL NONINTEREST INCOME	$ 7,441	$ 6,478	$ 20,955	$ 18,794
Service Charges on Deposit Accounts
Disaggregation Of Revenue [Line Items]
Noninterest income	1,208	1,151	3,375	3,139
Debit Card and EFT Fees
Disaggregation Of Revenue [Line Items]
Noninterest income	935	814	2,600	2,490
Trust Fees
Disaggregation Of Revenue [Line Items]
Noninterest income	1,905	1,827	5,584	5,374
Insurance Agency Commissions
Disaggregation Of Revenue [Line Items]
Noninterest income	681	567	2,223	1,979
Retirement Plan Consulting Fees
Disaggregation Of Revenue [Line Items]
Noninterest income	338	470	1,146	1,314
Investment Commissions
Disaggregation Of Revenue [Line Items]
Noninterest income	384	273	971	844
Operating Segments
Disaggregation Of Revenue [Line Items]
TOTAL NONINTEREST INCOME	7,441	6,478	20,955	18,794
Operating Segments | Service Charges on Deposit Accounts
Disaggregation Of Revenue [Line Items]
Noninterest income	1,208	1,151	3,375	3,139
Operating Segments | Debit Card and EFT Fees
Disaggregation Of Revenue [Line Items]
Noninterest income	935	814	2,600	2,490
Operating Segments | Trust Fees
Disaggregation Of Revenue [Line Items]
Noninterest income	1,905	1,827	5,584	5,374
Operating Segments | Insurance Agency Commissions
Disaggregation Of Revenue [Line Items]
Noninterest income	681	567	2,223	1,979
Operating Segments | Retirement Plan Consulting Fees
Disaggregation Of Revenue [Line Items]
Noninterest income	338	470	1,146	1,314
Operating Segments | Investment Commissions
Disaggregation Of Revenue [Line Items]
Noninterest income	384	273	971	844
Operating Segments | Other
Disaggregation Of Revenue [Line Items]
Noninterest income	1,990	1,376	5,056	3,654
Operating Segments | Trust Segment
Disaggregation Of Revenue [Line Items]
TOTAL NONINTEREST INCOME	2,243	2,297	6,730	6,688
Operating Segments | Trust Segment | Service Charges on Deposit Accounts
Disaggregation Of Revenue [Line Items]
Noninterest income	0	0	0	0
Operating Segments | Trust Segment | Debit Card and EFT Fees
Disaggregation Of Revenue [Line Items]
Noninterest income	0	0	0	0
Operating Segments | Trust Segment | Trust Fees
Disaggregation Of Revenue [Line Items]
Noninterest income	1,905	1,827	5,584	5,374
Operating Segments | Trust Segment | Insurance Agency Commissions
Disaggregation Of Revenue [Line Items]
Noninterest income	0	0	0	0
Operating Segments | Trust Segment | Retirement Plan Consulting Fees
Disaggregation Of Revenue [Line Items]
Noninterest income	338	470	1,146	1,314
Operating Segments | Trust Segment | Investment Commissions
Disaggregation Of Revenue [Line Items]
Noninterest income	0	0	0	0
Operating Segments | Trust Segment | Other
Disaggregation Of Revenue [Line Items]
Noninterest income	0	0	0	0
Operating Segments | Bank Segment
Disaggregation Of Revenue [Line Items]
TOTAL NONINTEREST INCOME	5,198	4,181	14,225	12,106
Operating Segments | Bank Segment | Service Charges on Deposit Accounts
Disaggregation Of Revenue [Line Items]
Noninterest income	1,208	1,151	3,375	3,139
Operating Segments | Bank Segment | Debit Card and EFT Fees
Disaggregation Of Revenue [Line Items]
Noninterest income	935	814	2,600	2,490
Operating Segments | Bank Segment | Trust Fees
Disaggregation Of Revenue [Line Items]
Noninterest income	0	0	0	0
Operating Segments | Bank Segment | Insurance Agency Commissions
Disaggregation Of Revenue [Line Items]
Noninterest income	681	567	2,223	1,979
Operating Segments | Bank Segment | Retirement Plan Consulting Fees
Disaggregation Of Revenue [Line Items]
Noninterest income	0	0	0	0
Operating Segments | Bank Segment | Investment Commissions
Disaggregation Of Revenue [Line Items]
Noninterest income	384	273	971	844
Operating Segments | Bank Segment | Other
Disaggregation Of Revenue [Line Items]
Noninterest income	$ 1,990	$ 1,376	$ 5,056	$ 3,654