Acquisitions Staunton Acquisition (Details) - USD ($) $ in Thousands				12 Months Ended
	Jun. 30, 2020	Feb. 14, 2020	Jun. 14, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
February 14, 2020
Fair value of liabilities assumed				$ 480,028	$ 725,764	$ 2,340,323
First Staunton Bancshares
Purchase Accounting Adjustments
Cash and cash equivalents		$ 0
Investment securities AFS		(24)
Federal Home Loan Bank and Federal Reserve Bank stocks, at cost		0
Loans		(4,808)
Premises and equipment, net		(3,005)
Bank owned life insurance		9
Core deposit intangibles (included in other intangible assets, net on the face of the consolidated balance sheets)		7,379
OREO (included in other assets on the face of the consolidated balance sheets)		670
Other assets		2,795
Deposits		1,285
Other borrowings		61
Accrued expenses and other liabilities		179
February 14, 2020
Cash and cash equivalents		44,782
Investment securities AFS		98,743
Federal Home Loan Bank and Federal Reserve Bank stocks, at cost		781
Loans		369,741
Premises and equipment, net		4,865
Bank owned life insurance		6,770
Goodwill	$ 82,000	14,812		$ 15,000
Core deposit intangibles (included in other intangible assets, net on the face of the consolidated balance sheets)		7,379
OREO (included in other assets on the face of the consolidated balance sheets)		762
Other assets		7,692
Total assets		556,328
Deposits		438,684
Other borrowings		34,613
Other Liabilities		6,730
Fair value of liabilities assumed		480,028
Total consideration paid		$ 76,300
Huntington National Bank [Member]
Purchase Accounting Adjustments
Cash and cash equivalents			$ 0
Loans			(1,552)
Premises and equipment, net			4,800
Core deposit intangibles (included in other intangible assets, net on the face of the consolidated balance sheets)			22,630
OREO (included in other assets on the face of the consolidated balance sheets)			(2,561)
Other assets			0
Deposits			156
Accrued expenses and other liabilities			70
February 14, 2020
Cash and cash equivalents			551,250
Loans			116,346
Premises and equipment, net			22,430
Goodwill			7,286
Core deposit intangibles (included in other intangible assets, net on the face of the consolidated balance sheets)			22,630
Other assets			559
Total assets			725,764
Deposits			725,173
Other Liabilities			590
Fair value of liabilities assumed			$ 725,764