Fair Value Disclosures- Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Assets
Investments in equity securities	$ 2,246	$ 2,623
Total assets	288		$ 1,748
Fair Value Measure on Recurring Basis [Member]
Assets
Total available-for-sale securities	198,886	246,924
Investments in equity securities	2,246	2,623
Loans	288	317
Total assets	204,331	250,263
Liabilities
Total liabilities	2,847	604
Fair Value Measure on Recurring Basis [Member] | Contingent Consideration Liability [Member]
Liabilities
Derivative liabilities	135	160
Fair Value Measure on Recurring Basis [Member] | Interest Rate Swap [Member]
Liabilities
Derivative liabilities	717	249
Fair Value Measure on Recurring Basis [Member] | Credit Risk Contract [Member]
Liabilities
Derivative liabilities	1,109	176
Fair Value Measure on Recurring Basis [Member] | Forward Loan Sale Commitments [Member]
Liabilities
Derivative liabilities	886	19
Fair Value Measure on Recurring Basis [Member] | U.S. Government Corporations and Agencies [Member]
Assets
Total available-for-sale securities	300	300
Fair Value Measure on Recurring Basis [Member] | State and Political Subdivisions [Member]
Assets
Total available-for-sale securities	30,600	34,595
Fair Value Measure on Recurring Basis [Member] | Residential Mortgage-Backed Securities [Member]
Assets
Total available-for-sale securities	85,422	118,460
Fair Value Measure on Recurring Basis [Member] | Collateralized Mortgage Obligations [Member]
Assets
Total available-for-sale securities	978	2,361
Fair Value Measure on Recurring Basis [Member] | Corporate Bonds [Member]
Assets
Total available-for-sale securities	81,586	91,208
Fair Value Measure on Recurring Basis [Member] | Equity Securities [Member]
Assets
Investments in equity securities	736	1,004
Fair Value Measure on Recurring Basis [Member] | Money Market Mutual Funds [Member]
Assets
Investments in equity securities	1,510	1,619
Fair Value Measure on Recurring Basis [Member] | Interest Rate Locks With Customers [Member]
Assets
Derivative asset	2,911	399
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member]
Assets
Total available-for-sale securities	0	0
Investments in equity securities	2,246	2,623
Loans	0	0
Total assets	2,246	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	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	736	1,004
Fair Value Measure on Recurring Basis [Member] | Level 1 [Member] | Money Market Mutual Funds [Member]
Assets
Investments in equity securities	1,510	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	198,886	246,924
Investments in equity securities	0	0
Loans	0	0
Total assets	201,797	247,323
Liabilities
Total liabilities	1,603	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	717	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	886	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	300
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | State and Political Subdivisions [Member]
Assets
Total available-for-sale securities	30,600	34,595
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | Residential Mortgage-Backed Securities [Member]
Assets
Total available-for-sale securities	85,422	118,460
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | Collateralized Mortgage Obligations [Member]
Assets
Total available-for-sale securities	978	2,361
Fair Value Measure on Recurring Basis [Member] | Level 2 [Member] | Corporate Bonds [Member]
Assets
Total available-for-sale securities	81,586	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	2,911	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	288	317
Total assets	288	317
Liabilities
Total liabilities	1,244	336
Fair Value Measure on Recurring Basis [Member] | Level 3 [Member] | Contingent Consideration Liability [Member]
Liabilities
Derivative liabilities	135	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	1,109	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	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