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Loans and Allowance for Loan Losses - Credit risk profile by risk grade of non acquired loans - (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Mar. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Loans and Allowance for Loan Losses          
Total loans $ 1,289        
Other Real Estate, Non Covered 11,203 $ 18,316 $ 4,200 $ 24,803 $ 26,499
Non-acquired loans          
Loans and Allowance for Loan Losses          
Total loans 6,492,155 5,241,041   4,220,726  
Classified assets 40,500 42,800      
Other Real Estate, Non Covered 2,400 3,900      
Non-acquired loans | Pass          
Loans and Allowance for Loan Losses          
Total loans 6,375,759 5,112,628      
Non-acquired loans | Special mention          
Loans and Allowance for Loan Losses          
Total loans 78,325 89,489      
Non-acquired loans | Substandard and doubtful          
Loans and Allowance for Loan Losses          
Total loans 38,100 38,900      
Non-acquired loans | Substandard          
Loans and Allowance for Loan Losses          
Total loans 38,071 38,924      
Acquired non-credit impaired loans          
Loans and Allowance for Loan Losses          
Total loans 3,507,907 836,699   1,049,538  
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 3,507,907 836,699      
Acquired non-credit impaired loans | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 3,438,030 812,320      
Acquired non-credit impaired loans | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 49,868 13,355      
Acquired non-credit impaired loans | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 20,009 11,024      
Acquired credit impaired loans          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 623,430 605,941   737,576  
Acquired credit impaired loans | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 369,348 356,544      
Acquired credit impaired loans | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 106,723 115,726      
Acquired credit impaired loans | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 147,359 133,671      
Residential real estate          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 260,787 258,100      
Residential real estate | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 135,974 138,343      
Residential real estate | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 54,500 52,546      
Residential real estate | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 70,313 67,211      
Residential real estate | Acquired credit impaired loans          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 260,787 258,100   313,319  
Commercial non-owner occupied real estate | Non-acquired loans          
Loans and Allowance for Loan Losses          
Total loans 1,839,768 1,295,179      
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development          
Loans and Allowance for Loan Losses          
Total loans 830,875 580,464   401,979  
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development | Pass          
Loans and Allowance for Loan Losses          
Total loans 818,240 567,398      
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development | Special mention          
Loans and Allowance for Loan Losses          
Total loans 8,758 8,421      
Commercial non-owner occupied real estate | Non-acquired loans | Construction and land development | Substandard          
Loans and Allowance for Loan Losses          
Total loans 3,877 4,645      
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate          
Loans and Allowance for Loan Losses          
Total loans 1,008,893 714,715   487,777  
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate | Pass          
Loans and Allowance for Loan Losses          
Total loans 999,049 701,150      
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate | Special mention          
Loans and Allowance for Loan Losses          
Total loans 7,864 11,434      
Commercial non-owner occupied real estate | Non-acquired loans | Other commercial non-owner occupied real estate | Substandard          
Loans and Allowance for Loan Losses          
Total loans 1,980 2,131      
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 403,357 10,090      
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 394,139 8,997      
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 4,602 253      
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Construction and land development | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 4,616 840      
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate          
Loans and Allowance for Loan Losses          
Total loans 817,166 34,628   40,103  
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 817,166 34,628      
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 809,241 28,368      
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 7,913 6,171      
Commercial non-owner occupied real estate | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 12 89      
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 49,649 44,373   54,272  
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 29,620 21,150      
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 5,132 12,643      
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 14,897 10,580      
Commercial non-owner occupied real estate | Acquired credit impaired loans | Construction and land development | Doubtful          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 49,649 44,373      
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 234,595 218,821   268,058  
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 177,231 171,167      
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 28,708 26,238      
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 28,656 21,416      
Commercial non-owner occupied real estate | Acquired credit impaired loans | Other commercial non-owner occupied real estate | Doubtful          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 234,595 218,821      
Commercial owner occupied real estate loan | Non-acquired loans          
Loans and Allowance for Loan Losses          
Total loans 1,262,776 1,177,745   1,033,398  
Commercial owner occupied real estate loan | Non-acquired loans | Pass          
Loans and Allowance for Loan Losses          
Total loans 1,232,927 1,149,417      
Commercial owner occupied real estate loan | Non-acquired loans | Special mention          
Loans and Allowance for Loan Losses          
Total loans 23,575 22,133      
Commercial owner occupied real estate loan | Non-acquired loans | Substandard          
Loans and Allowance for Loan Losses          
Total loans 6,274 6,195      
Commercial owner occupied real estate loan | Acquired non-credit impaired loans          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 521,818 27,195      
Commercial owner occupied real estate loan | Acquired non-credit impaired loans | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 513,861 26,920      
Commercial owner occupied real estate loan | Acquired non-credit impaired loans | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 7,740        
Commercial owner occupied real estate loan | Acquired non-credit impaired loans | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 217 275      
Consumer real estate | Non-acquired loans          
Loans and Allowance for Loan Losses          
Total loans 1,967,902 1,580,839      
Consumer real estate | Non-acquired loans | Home equity loans          
Loans and Allowance for Loan Losses          
Total loans 437,642 383,218   319,255  
Consumer real estate | Non-acquired loans | Home equity loans | Pass          
Loans and Allowance for Loan Losses          
Total loans 424,369 368,655      
Consumer real estate | Non-acquired loans | Home equity loans | Special mention          
Loans and Allowance for Loan Losses          
Total loans 6,749 8,145      
Consumer real estate | Non-acquired loans | Home equity loans | Substandard          
Loans and Allowance for Loan Losses          
Total loans 6,524 6,418      
Consumer real estate | Non-acquired loans | Other Consumer          
Loans and Allowance for Loan Losses          
Total loans 33,690 13,404      
Consumer real estate | Non-acquired loans | Other Consumer | Pass          
Loans and Allowance for Loan Losses          
Total loans 33,690 13,404      
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans          
Loans and Allowance for Loan Losses          
Total loans 1,530,260 1,197,621   1,018,984  
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans | Pass          
Loans and Allowance for Loan Losses          
Total loans 1,502,016 1,167,768      
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans | Special mention          
Loans and Allowance for Loan Losses          
Total loans 13,902 15,283      
Consumer real estate | Non-acquired loans | Consumer Owner Occupied Loans | Substandard          
Loans and Allowance for Loan Losses          
Total loans 14,342 14,570      
Consumer real estate | Acquired non-credit impaired loans          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 1,170,201 711,803      
Consumer real estate | Acquired non-credit impaired loans | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 1,141,218 696,199      
Consumer real estate | Acquired non-credit impaired loans | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 15,183 6,541      
Consumer real estate | Acquired non-credit impaired loans | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 13,800 9,063      
Consumer real estate | Acquired non-credit impaired loans | Home equity loans          
Loans and Allowance for Loan Losses          
Total loans 320,591 160,879   190,968  
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 320,591 160,879      
Consumer real estate | Acquired non-credit impaired loans | Home equity loans | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 301,842 151,752      
Consumer real estate | Acquired non-credit impaired loans | Home equity loans | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 10,477 4,113      
Consumer real estate | Acquired non-credit impaired loans | Home equity loans | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 8,272 5,014      
Consumer real estate | Acquired non-credit impaired loans | Other Consumer          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 137,710 142,654      
Consumer real estate | Acquired non-credit impaired loans | Other Consumer | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 134,530 139,686      
Consumer real estate | Acquired non-credit impaired loans | Other Consumer | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 541 1,102      
Consumer real estate | Acquired non-credit impaired loans | Other Consumer | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 2,639 1,866      
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans          
Loans and Allowance for Loan Losses          
Total loans 710,611 408,270   518,107  
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 710,611 408,270      
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 703,557 404,761      
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 4,165 1,326      
Consumer real estate | Acquired non-credit impaired loans | Consumer Owner Occupied Loans | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 2,889 2,183      
Consumer real estate | Acquired credit impaired loans          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 51,453 59,300   70,734  
Commercial and industrial          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 26,946 25,347      
Commercial and industrial | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 18,522 17,371      
Commercial and industrial | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 1,169 4,614      
Commercial and industrial | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 7,255 3,362      
Commercial and industrial | Non-acquired loans          
Loans and Allowance for Loan Losses          
Total loans 815,187 671,398   503,808  
Commercial and industrial | Non-acquired loans | Pass          
Loans and Allowance for Loan Losses          
Total loans 801,885 655,157      
Commercial and industrial | Non-acquired loans | Special mention          
Loans and Allowance for Loan Losses          
Total loans 11,130 14,325      
Commercial and industrial | Non-acquired loans | Substandard          
Loans and Allowance for Loan Losses          
Total loans 2,172 1,916      
Commercial and industrial | Acquired non-credit impaired loans          
Loans and Allowance for Loan Losses          
Total loans 398,696 13,641   25,475  
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 398,696 13,641      
Commercial and industrial | Acquired non-credit impaired loans | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 388,342 13,475      
Commercial and industrial | Acquired non-credit impaired loans | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 9,883 117      
Commercial and industrial | Acquired non-credit impaired loans | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 471 49      
Commercial and industrial | Acquired credit impaired loans          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 26,946 25,347   31,193  
Other income producing property | Non-acquired loans          
Loans and Allowance for Loan Losses          
Total loans 193,847 178,238   175,848  
Other income producing property | Non-acquired loans | Pass          
Loans and Allowance for Loan Losses          
Total loans 186,158 167,025      
Other income producing property | Non-acquired loans | Special mention          
Loans and Allowance for Loan Losses          
Total loans 6,034 9,280      
Other income producing property | Non-acquired loans | Substandard          
Loans and Allowance for Loan Losses          
Total loans 1,655 1,933      
Other income producing property | Acquired non-credit impaired loans          
Loans and Allowance for Loan Losses          
Total loans 196,669 39,342   51,169  
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 196,669 39,342      
Other income producing property | Acquired non-credit impaired loans | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 191,229 38,361      
Other income producing property | Acquired non-credit impaired loans | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 4,547 273      
Other income producing property | Acquired non-credit impaired loans | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 893 708      
Consumer          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 51,453 59,300      
Consumer | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 8,001 8,513      
Consumer | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 17,214 19,685      
Consumer | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 26,238 31,102      
Consumer | Non-acquired loans          
Loans and Allowance for Loan Losses          
Total loans 378,985 324,238   233,104  
Consumer | Non-acquired loans | Pass          
Loans and Allowance for Loan Losses          
Total loans 377,425 322,654      
Consumer | Non-acquired loans | Special mention          
Loans and Allowance for Loan Losses          
Total loans 313 468      
Consumer | Non-acquired loans | Substandard          
Loans and Allowance for Loan Losses          
Total loans 1,247 1,116      
Consumer | Non-acquired loans | All Consumer          
Loans and Allowance for Loan Losses          
Total loans 2,380,577 1,918,481      
Consumer | Non-acquired loans | All Consumer | Pass          
Loans and Allowance for Loan Losses          
Total loans 2,337,500 1,872,481      
Consumer | Non-acquired loans | All Consumer | Special mention          
Loans and Allowance for Loan Losses          
Total loans 20,964 23,896      
Consumer | Non-acquired loans | All Consumer | Substandard          
Loans and Allowance for Loan Losses          
Total loans 22,113 22,104      
Consumer | Acquired non-credit impaired loans          
Loans and Allowance for Loan Losses          
Total loans 137,710 142,654   170,647  
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 137,710 142,654      
Consumer | Acquired credit impaired loans          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 51,453 59,300      
Commercial | Non-acquired loans          
Loans and Allowance for Loan Losses          
Total loans 4,111,578 3,322,560      
Commercial | Non-acquired loans | Pass          
Loans and Allowance for Loan Losses          
Total loans 4,038,259 3,240,147      
Commercial | Non-acquired loans | Special mention          
Loans and Allowance for Loan Losses          
Total loans 57,361 65,593      
Commercial | Non-acquired loans | Substandard          
Loans and Allowance for Loan Losses          
Total loans 15,958 16,820      
Commercial | Acquired non-credit impaired loans          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 2,337,706 124,896      
Commercial | Acquired non-credit impaired loans | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 2,296,812 116,121      
Commercial | Acquired non-credit impaired loans | Special mention          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 34,685 6,814      
Commercial | Acquired non-credit impaired loans | Substandard          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 6,209 1,961      
Commercial | Acquired non-credit impaired loans | Construction and land development          
Loans and Allowance for Loan Losses          
Total loans 403,357 10,090   13,849  
Commercial | Acquired non-credit impaired loans | Other commercial non-owner occupied real estate          
Loans and Allowance for Loan Losses          
Total loans 521,818 27,195   39,220  
Other loans          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 1,289        
Other loans | Pass          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance 1,289        
Other loans | Non-acquired loans          
Loans and Allowance for Loan Losses          
Total loans 33,690 $ 13,404   $ 46,573  
Other loans | Acquired non-credit impaired loans          
Loans and Allowance for Loan Losses          
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Outstanding Balance $ 1,289