Note 3 - Acquisitions (Details Textual) - USD ($) $ / shares in Units, $ in Thousands					12 Months Ended
	Jul. 10, 2021	Dec. 15, 2020	Apr. 24, 2020	Jan. 01, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2022
Goodwill, Ending Balance	$ 10,331				$ 55,300		$ 55,300
Payments to Acquire Businesses, Gross					$ 9,807	$ 48,920
MVB [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits Estimated	164,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Estimated	54,000
Business Combination, Consideration Transferred, Total	$ 9,800
Business Combination, Period for Average Daily Closing Price of Deposits Prior to Closing (Day)	30 days
Business Combination, Percent Multiplier Used to Calculate Purchase Price	6.00%
Goodwill, Ending Balance	$ 10,330
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total	58,565		$ 38,417
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Total	$ 163,126		188,236
MVB [Member] | Core Deposits [Member]
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life (Year)	10 years
WinFirst Financial Corp [Member]
Business Combination, Consideration Transferred, Total		$ 21,700
Goodwill, Ending Balance		$ 6,730
Business Acquisition, Percentage of Voting Interests Acquired		100.00%
Business Acquisition, Share Price (in dollars per share)		$ 328.05
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total		$ 143,435
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Total		$ 127,454
WinFirst Financial Corp [Member] | Core Deposits [Member]
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life (Year)		10 years
MVB Bank [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deposits Estimated			188,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans Estimated			38,400
Business Combination, Consideration Transferred, Total			$ 13,000
Business Combination, Period for Average Daily Closing Price of Deposits Prior to Closing (Day)			30 days
Business Combination, Percent Multiplier Used to Calculate Purchase Price			8.00%
Goodwill, Ending Balance			$ 14,700
MVB Bank [Member] | Core Deposits [Member]
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life (Year)			10 years
Cornerstone Financial Services Inc [Member]
Business Combination, Consideration Transferred, Total				$ 15,400
Goodwill, Ending Balance				$ 10,820
Business Acquisition, Percentage of Voting Interests Acquired				100.00%
Business Acquisition, Share Price (in dollars per share)				$ 5,700.00
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets, Total				$ 195,029
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities, Total				$ 176,313
Business Acquisition, Share Price, Number of Shares (in shares)				228
Business Acquisition, Consideration Transferred, Percentage Cash				50.00%
Business Acquisition, Consideration Transferred, Percentage of Stock				50.00%
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)				570,000
Payments to Acquire Businesses, Gross				$ 14,300
Cornerstone Financial Services Inc [Member] | Core Deposits [Member]
Acquired Finite-Lived Intangible Assets, Weighted Average Useful Life (Year)				10 years