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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Mar. 31, 2021
Dec. 31, 2020
Mar. 31, 2020
Jan. 01, 2020
Dec. 31, 2019
Other Commitments [Line Items]                  
Unused Commitments to Extend Credit $ 1,042,823   $ 1,042,823     $ 1,105,425      
Allowance for credit losses on loans 51,562 $ 71,501 51,562 $ 71,501 $ 64,225 70,185 $ 47,540 $ 37,993 $ 36,171
Cumulative Effect, Period of Adoption, Adjustment                  
Other Commitments [Line Items]                  
Allowance for credit losses on loans           0     1,822
Cumulative Effect, Period of Adoption, Adjusted Balance                  
Other Commitments [Line Items]                  
Allowance for credit losses on loans           70,185     37,993
Commercial Portfolio Segment [Member]                  
Other Commitments [Line Items]                  
Unused Commitments to Extend Credit 582,540   582,540     661,902      
Allowance for credit losses on loans 36,677 50,442 36,677 50,442 45,204 49,608 27,866 20,998  
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member]                  
Other Commitments [Line Items]                  
Unused Commitments to Extend Credit 572,214   572,214     640,018      
Allowance for credit losses on loans 17,485 29,773 17,485 29,773 21,770 30,010 13,900 10,391  
Commercial Portfolio Segment [Member] | Owner Occupied Commercial Real Estate [Member]                  
Other Commitments [Line Items]                  
Unused Commitments to Extend Credit 2,515   2,515     3,488      
Allowance for credit losses on loans 8,562 10,003 8,562 10,003 10,464 9,486 6,216 4,964  
Commercial Portfolio Segment [Member] | Non Owner Occupied Commercial Real Estate [Member]                  
Other Commitments [Line Items]                  
Unused Commitments to Extend Credit 7,811   7,811     18,396      
Allowance for credit losses on loans 10,630 10,666 10,630 10,666 12,970 10,112 7,750 5,643  
Real Estate Construction and Land Development [Member]                  
Other Commitments [Line Items]                  
Unused Commitments to Extend Credit 193,011   193,011     180,274      
Allowance for credit losses on loans 10,471 9,124 10,471 9,124 13,271 13,092 12,308 9,729  
Real Estate Construction and Land Development [Member] | One to Four Family Real Estate Construction [Member]                  
Other Commitments [Line Items]                  
Unused Commitments to Extend Credit 57,983   57,983     52,453      
Allowance for credit losses on loans 1,636 567 1,636 567 2,048 1,951 864 884  
Real Estate Construction and Land Development [Member] | Five or More Family Residential and Commercial Properties [Member]                  
Other Commitments [Line Items]                  
Unused Commitments to Extend Credit 135,028   135,028     127,821      
Allowance for credit losses on loans 8,835 8,557 8,835 8,557 11,223 11,141 11,444 8,845  
Consumer Portfolio Segment [Member]                  
Other Commitments [Line Items]                  
Unused Commitments to Extend Credit 267,272   267,272     263,249      
Allowance for credit losses on loans 3,261 9,712 3,261 9,712 4,348 5,894 4,340 4,337  
Unused Commitments to Extend Credit [Member]                  
Other Commitments [Line Items]                  
Provision for Other Credit Losses (1,166) 2,622 (2,230) 604          
Allowance for credit losses on loans $ 2,451 $ 4,612 $ 2,451 $ 4,612 3,617 4,681 1,990   306
Unused Commitments to Extend Credit [Member] | Accounting Standards Update 2016-13 [Member]                  
Other Commitments [Line Items]                  
Allowance for credit losses on loans               $ 3,700  
Unused Commitments to Extend Credit [Member] | Cumulative Effect, Period of Adoption, Adjustment                  
Other Commitments [Line Items]                  
Allowance for credit losses on loans         0 0 0   3,702
Unused Commitments to Extend Credit [Member] | Cumulative Effect, Period of Adoption, Adjusted Balance                  
Other Commitments [Line Items]                  
Allowance for credit losses on loans         $ 3,617 $ 4,681 $ 1,990   $ 4,008