Acquisitions Schedule of Consideration Paid, Assets Acquired and Liabilities Assumed in Acquisition (Details) - USD ($) $ in Thousands	Dec. 15, 2020	Sep. 28, 2020	Apr. 24, 2020	Jan. 01, 2020	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill					$ 45,495	$ 12,658
As Recorded By Summit [Member]
Business Acquisition [Line Items]
Consideration paid in acquisition	$ 21,705		$ 12,965	$ 29,691
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	13,030		800	60,284
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Cash and Cash Equivalents	0		0	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities	1,632			90,028
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Securities Available for Sale	19			(47)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Purchased Performing Loans	122,786		33,942	38,153
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Purchased Performing Loans	(968)		(1,185)	188
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Purchased Credit Impaired Loans	0			1,308
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Purchased Credit Impaired Loans	0			(569)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets, Allowance For Loan Losses	0			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Allowance For Loan Losses	1,227			312
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	144		2,334	664
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Property, Plant, And Equipment	(27)		(42)	(142)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property Held-For-Sale	146			10
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Property Held-For-Sale	(50)			0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	81		125	717
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Intangibles	81		125	717
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets	5,896		114	4,250
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Other Assets	(2)		0	(74)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	143,715		37,315	195,414
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Assets	280		(1,102)	385
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	104,664		188,732	173,266
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Deposits	1,065		598	239
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Short Term Borrowings	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Short Term Borrowings	3,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	21,282
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	270		102	3,279
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Other Liabilities	0		0	(7)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	129,216		188,834	176,545
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Liabilities	1,762		598	232
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	14,499		(151,519)	18,869
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Fair Value Adjustment, Assets (Liabilities), Net	(1,482)		(1,700)	153
Goodwill	7,206		14,665	10,822
Business Combination. Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Fair Value Adjustment, Long-term Debt	697
Cornerstone Financial Services Inc. [Member]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents				60,284
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities				90,075
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				806
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				4,324
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets				195,029		195,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits				173,027
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other				3,286
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities				176,313		$ 176,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net				18,716
Goodwill				10,820
MVB Bank [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)
Net Cash Received in Business Acquisition			136,854
Goodwill			14,700
WinFirst Financial Corp [Domain]
Business Acquisition [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	13,030
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities	1,613
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Purchased Performing Loans	123,754
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Purchased Credit Impaired Loans	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financial Assets, Allowance For Loan Losses	(1,227)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	171
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property Held-For-Sale	196
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	5,898
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets	143,435
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits	103,599
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Short Term Borrowings	3,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	20,585
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other	270
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	127,454
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net	15,981
Goodwill	7,210
Cash Consideration [Member] | As Recorded By Summit [Member]
Business Acquisition [Line Items]
Consideration paid in acquisition	$ 21,705		12,965	14,250
Cash Consideration [Member] | Cornerstone Financial Services Inc. [Member]
Business Acquisition [Line Items]
Consideration paid in acquisition				14,300
Cash Consideration [Member] | MVB Bank [Member]
Business Acquisition [Line Items]
Consideration paid in acquisition			$ 13,000
Cash Consideration [Member] | WinFirst Financial Corp [Domain]
Business Acquisition [Line Items]
Consideration paid in acquisition		$ 21,700
Stock Consideration [Member] | As Recorded By Summit [Member]
Business Acquisition [Line Items]
Consideration paid in acquisition				15,441
Stock Consideration [Member] | Cornerstone Financial Services Inc. [Member]
Business Acquisition [Line Items]
Consideration paid in acquisition				$ 15,400