Acquisitions Schedule of Consideration Paid, Assets Acquired and Liabilities Assumed in Acquisition (Details) - USD ($) $ in Thousands	Apr. 24, 2020	Jan. 01, 2020	Dec. 31, 2019
As Recorded By Summit [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 12,965	$ 29,691
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Cash and Cash Equivalents	0	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	800	60,285
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Securities Available for Sale		(47)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities		90,107
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Purchased Performing Loans	(1,185)	188
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Purchased Performing Loans	33,942	38,153
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Purchased Credit Impaired Loans		(569)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Purchased Credit Impaired Loans		1,308
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Allowance For Loan Losses		312
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets, Allowance For Loan Losses		0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Property, Plant, And Equipment	(42)	(142)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	2,334	665
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Property Held-For-Sale		0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property Held-For-Sale		10
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Intangibles	125	717
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	125	717
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Other Assets	0	(474)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	114	3,789
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Assets	(1,102)	(15)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	37,315	195,034
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Deposits	598	239
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	188,732	173,269
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Other Liabilities	0	(407)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	102	2,896
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Liabilities	598	(168)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	188,834	176,165
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Assets (Liabilities), Net	(1,700)	153
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	(151,519)	18,869
Net Cash Received in Business Acquisition	136,854
Goodwill	14,665	10,822
Cornerstone Financial Services Inc. [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents		60,285
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities		90,154
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Purchased Performing Loans		37,965
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Purchased Credit Impaired Loans		1,877
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets, Allowance For Loan Losses		(312)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		807
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property Held-For-Sale		10
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets		4,263
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		195,049	$ 195,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits		173,030
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other		3,303
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities		176,333	$ 176,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		18,716
Goodwill		10,820
MVB [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	800
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Purchased Performing Loans	35,127
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	2,376
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	114
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	38,417
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	188,134
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	102
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	188,236
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	(149,819)
Goodwill	14,670
Cash Consideration [Member] | As Recorded By Summit [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred	$ 12,965	14,250
Cash Consideration [Member] | Cornerstone Financial Services Inc. [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred		14,300
Stock Consideration [Member] | As Recorded By Summit [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred		15,441
Stock Consideration [Member] | Cornerstone Financial Services Inc. [Member]
Business Acquisition [Line Items]
Business Combination, Consideration Transferred		$ 15,400