v3.25.2
Regulatory Capital - Summary of Company's and Wilson Banks Actual Capital Amounts and Ratios (Details)
$ in Thousands
Jun. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Total capital to risk weighted assets actual amount $ 649,277 $ 615,180
Total capital to risk weighted assets actual ratio 0.147 0.145
Total capital to risk weighted assets regulatory minimum capital requirement amount $ 352,552 $ 338,916
Total capital to risk weighted assets regulatory minimum capital requirement ratio 0.08 0.08
Total capital to risk weighted assets well capitalized amount [1],[2] $ 440,690 $ 423,646
Total capital to risk weighted assets regulatory minimum capital requirement well capitalized ratio [1],[2] 0.10 0.10
Tier 1 capital to risk weighted assets actual amount $ 594,178 $ 563,128
Tier 1 capital to risk weighted assets actual ratio 0.135 0.133
Tier 1 capital to risk weighted assets regulatory minimum capital requirement amount $ 264,414 $ 254,188
Tier 1 capital to risk weighted assets regulatory minimum capital requirement ratio 0.06 0.06
Tier 1 capital to risk well capitalized amount [1],[2] $ 264,414 $ 254,188
Tier 1 capital to risk weighted assets regulatory well capitalized ratio [1],[2] 0.06 0.06
Common equity Tier 1 capital to risk weighted assets actual amount $ 594,178 $ 562,925
Common equity Tier 1 capital to risk weighted assets actual ratio 0.135 0.133
Common equity Tier 1 capital to risk weighted assets regulatory minimum capital requirement amount $ 198,311 $ 190,641
Common equity Tier 1 capital to risk weighted assets regulatory minimum capital requirement ratio 0.045 0.045
Tier 1 capital to average assets actual amount $ 594,178 $ 563,128
Tier 1 capital to average assets actual ratio 0.105 0.104
Tier 1 capital to average assets regulatory minimum capital requirement amount $ 226,541 $ 216,949
Tier 1 capital to average assets regulatory minimum capital requirement ratio (as a percent) 0.04 0.04
Wilson Bank [Member]    
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]    
Total capital to risk weighted assets actual amount $ 641,536 $ 609,568
Total capital to risk weighted assets actual ratio 0.146 0.144
Total capital to risk weighted assets regulatory minimum capital requirement amount $ 352,427 $ 338,788
Total capital to risk weighted assets regulatory minimum capital requirement ratio 0.08 0.08
Total capital to risk weighted assets well capitalized amount [1],[2] $ 440,534 $ 423,485
Total capital to risk weighted assets regulatory minimum capital requirement well capitalized ratio [1],[2] 0.10 0.10
Tier 1 capital to risk weighted assets actual amount $ 586,456 $ 557,516
Tier 1 capital to risk weighted assets actual ratio 0.133 0.132
Tier 1 capital to risk weighted assets regulatory minimum capital requirement amount $ 264,320 $ 254,090
Tier 1 capital to risk weighted assets regulatory minimum capital requirement ratio 0.06 0.06
Tier 1 capital to risk well capitalized amount [1],[2] $ 352,427 $ 338,787
Tier 1 capital to risk weighted assets regulatory well capitalized ratio [1],[2] 0.08 0.08
Common equity Tier 1 capital to risk weighted assets actual amount $ 586,456 $ 557,313
Common equity Tier 1 capital to risk weighted assets actual ratio 0.133 0.132
Common equity Tier 1 capital to risk weighted assets regulatory minimum capital requirement amount $ 198,240 $ 190,568
Common equity Tier 1 capital to risk weighted assets regulatory minimum capital requirement ratio 0.045 0.045
Common equity Tier 1 capital to risk weighted assets regulatory well capitalized [1],[2] $ 286,347 $ 275,264
Common equity Tier 1 capital to risk weighted assets well capitalized ratio [1],[2] 0.065 0.065
Tier 1 capital to average assets actual amount $ 586,456 $ 557,516
Tier 1 capital to average assets actual ratio 0.104 0.103
Tier 1 capital to average assets regulatory minimum capital requirement amount $ 226,470 $ 216,873
Tier 1 capital to average assets regulatory minimum capital requirement ratio (as a percent) 0.04 0.04
Tier 1 capital to average assets well capitalized [1],[2] $ 283,088 $ 271,092
Tier 1 capital to average assets well capitalized ratio [1],[2] 0.05 0.05
[1] Ratios for Wilson Bank are those under applicable FDIC regulations for prompt corrective action.
[2] Well-capitalized minimum Common equity Tier 1 capital to risk weighted assets and Tier 1 capital to average assets are not formally defined under applicable regulations for bank holding companies.