Fair Value Disclosures- Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
Assets
Investments in equity securities	$ 2,786	$ 2,623
Total assets	221		$ 349
Fair Value Measure on Recurring Basis [Member]
Assets
Total available-for-sale securities	189,227	246,924
Investments in equity securities	2,786	2,623
Loans	221	317
Total assets	197,130	250,263
Liabilities
Total liabilities	1,897	604
Fair Value Measure on Recurring Basis [Member] | Contingent Consideration Liability [Member]
Liabilities
Derivative liabilities	83	160
Fair Value Measure on Recurring Basis [Member] | Interest Rate Swap [Member]
Liabilities
Derivative liabilities	624	249
Fair Value Measure on Recurring Basis [Member] | Credit Risk Contract [Member]
Liabilities
Derivative liabilities	716	176
Fair Value Measure on Recurring Basis [Member] | Forward Loan Sale Commitments [Member]
Liabilities
Derivative liabilities	474	19
Fair Value Measure on Recurring Basis [Member] | U.S. Government Corporations and Agencies [Member]
Assets
Total available-for-sale securities		300
Fair Value Measure on Recurring Basis [Member] | State and Political Subdivisions [Member]
Assets
Total available-for-sale securities	15,187	34,595
Fair Value Measure on Recurring Basis [Member] | Residential Mortgage-Backed Securities [Member]
Assets
Total available-for-sale securities	81,671	118,460
Fair Value Measure on Recurring Basis [Member] | Collateralized Mortgage Obligations [Member]
Assets
Total available-for-sale securities	5,830	2,361
Fair Value Measure on Recurring Basis [Member] | Corporate Bonds [Member]
Assets
Total available-for-sale securities	86,539	91,208
Fair Value Measure on Recurring Basis [Member] | Equity Securities [Member]
Assets
Investments in equity securities	683	1,004
Fair Value Measure on Recurring Basis [Member] | Money Market Mutual Funds [Member]
Assets
Investments in equity securities	2,103	1,619
Fair Value Measure on Recurring Basis [Member] | Interest Rate Locks With Customers [Member]
Assets
Derivative asset	4,896	399
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member]
Assets
Total available-for-sale securities	0	0
Investments in equity securities	2,786	2,623
Loans	0	0
Total assets	2,786	2,623
Liabilities
Total liabilities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member] | Contingent Consideration Liability [Member]
Liabilities
Derivative liabilities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member] | Interest Rate Swap [Member]
Liabilities
Derivative liabilities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member] | Credit Risk Contract [Member]
Liabilities
Derivative liabilities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member] | Forward Loan Sale Commitments [Member]
Liabilities
Derivative liabilities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member] | U.S. Government Corporations and Agencies [Member]
Assets
Total available-for-sale securities		0
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member] | State and Political Subdivisions [Member]
Assets
Total available-for-sale securities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member] | Residential Mortgage-Backed Securities [Member]
Assets
Total available-for-sale securities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member] | Collateralized Mortgage Obligations [Member]
Assets
Total available-for-sale securities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member] | Corporate Bonds [Member]
Assets
Total available-for-sale securities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member] | Equity Securities [Member]
Assets
Investments in equity securities	683	1,004
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member] | Money Market Mutual Funds [Member]
Assets
Investments in equity securities	2,103	1,619
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member] | Interest Rate Locks With Customers [Member]
Assets
Derivative asset	0	0
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member]
Assets
Total available-for-sale securities	189,227	246,924
Investments in equity securities	0	0
Loans	0	0
Total assets	194,123	247,323
Liabilities
Total liabilities	1,098	268
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | Contingent Consideration Liability [Member]
Liabilities
Derivative liabilities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | Interest Rate Swap [Member]
Liabilities
Derivative liabilities	624	249
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | Credit Risk Contract [Member]
Liabilities
Derivative liabilities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | Forward Loan Sale Commitments [Member]
Liabilities
Derivative liabilities	474	19
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | U.S. Government Corporations and Agencies [Member]
Assets
Total available-for-sale securities		300
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | State and Political Subdivisions [Member]
Assets
Total available-for-sale securities	15,187	34,595
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | Residential Mortgage-Backed Securities [Member]
Assets
Total available-for-sale securities	81,671	118,460
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | Collateralized Mortgage Obligations [Member]
Assets
Total available-for-sale securities	5,830	2,361
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | Corporate Bonds [Member]
Assets
Total available-for-sale securities	86,539	91,208
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | Equity Securities [Member]
Assets
Investments in equity securities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | Money Market Mutual Funds [Member]
Assets
Investments in equity securities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | Interest Rate Locks With Customers [Member]
Assets
Derivative asset	4,896	399
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member]
Assets
Total available-for-sale securities	0	0
Investments in equity securities	0	0
Loans	221	317
Total assets	221	317
Liabilities
Total liabilities	799	336
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member] | Contingent Consideration Liability [Member]
Liabilities
Derivative liabilities	83	160
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member] | Interest Rate Swap [Member]
Liabilities
Derivative liabilities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member] | Credit Risk Contract [Member]
Liabilities
Derivative liabilities	716	176
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member] | Forward Loan Sale Commitments [Member]
Liabilities
Derivative liabilities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member] | U.S. Government Corporations and Agencies [Member]
Assets
Total available-for-sale securities		0
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member] | State and Political Subdivisions [Member]
Assets
Total available-for-sale securities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member] | Residential Mortgage-Backed Securities [Member]
Assets
Total available-for-sale securities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member] | Collateralized Mortgage Obligations [Member]
Assets
Total available-for-sale securities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member] | Corporate Bonds [Member]
Assets
Total available-for-sale securities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member] | Equity Securities [Member]
Assets
Investments in equity securities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member] | Money Market Mutual Funds [Member]
Assets
Investments in equity securities	0	0
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member] | Interest Rate Locks With Customers [Member]
Assets
Derivative asset	$ 0	$ 0