Annual report pursuant to Section 13 and 15(d)

Note 14 - Regulatory Matters - The Company's and Bank's Actual Capital Amounts and Ratios (Details)

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Note 14 - Regulatory Matters - The Company's and Bank's Actual Capital Amounts and Ratios (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
CET 1 Capital to risk weighted assets, amount $ 705,203 $ 593,111
CET 1 Capital to risk weighted assets, ratio 10.12% 9.51%
CET 1 Capital to risk weighted assets, for capital adequacy purposes, amount $ 313,564 $ 280,553
CET 1 capital to risk weighted assets, for capital adequacy purposes, ratio 4.50% 4.50%
Tier 1 capital to risk weighted assets, amount $ 705,705 $ 593,613
Tier 1 capital to risk weighted assets, ratio 10.13% 9.52%
Tier 1 capital to risk weighted assets, for capital adequacy purposes, amount $ 418,086 $ 374,070
Tier 1 capital to risk weighted assets, for capital adequacy purposes, ratio 6.00% 6.00%
Total capital to risk weighted assets, amount $ 839,471 $ 718,151
Total capital to risk weighted assets, ratio 12.05% 11.52%
Total capital to risk weighted assets, for capital adequacy purposes, amount $ 557,448 $ 498,760
Total capital to risk weighted assets, for capital adequacy purposes, ratio 8.00% 8.00%
Tier 1 capital to average assets, amount $ 705,705 $ 593,613
Tier 1 capital to average assets, ratio 9.08% 8.51%
Tier 1 capital to average assets, for capital adequacy purposes, amount $ 311,214 $ 278,970
Tier 1 capital to average assets, for capital adequacy purposes, ratio 4.00% 4.00%
Servisfirst Bank [Member]    
CET 1 Capital to risk weighted assets, amount $ 768,614 $ 651,201
CET 1 Capital to risk weighted assets, ratio 11.03% 10.45%
CET 1 Capital to risk weighted assets, for capital adequacy purposes, amount $ 313,554 $ 280,523
CET 1 capital to risk weighted assets, for capital adequacy purposes, ratio 4.50% 4.50%
CET 1 capital to risk weighted assets, to be well capitalized under prompt corrective action provisions, amount $ 452,911 $ 405,199
CET 1 capital to risk weighted assets, to be well capitalized under prompt corrective action provisions, ratio 6.50% 6.50%
Tier 1 capital to risk weighted assets, amount $ 769,116 $ 651,703
Tier 1 capital to risk weighted assets, ratio 11.04% 10.45%
Tier 1 capital to risk weighted assets, for capital adequacy purposes, amount $ 418,071 $ 374,030
Tier 1 capital to risk weighted assets, for capital adequacy purposes, ratio 6.00% 6.00%
Tier 1 capital to risk weighted assets, to be well capitalized under prompt corrective action provisions, amount $ 557,428 $ 498,707
Tier 1 capital to risk weighted assets, to be well capitalized under prompt corrective action provisions, ratio 8.00% 8.00%
Total capital to risk weighted assets, amount $ 838,216 $ 711,609
Total capital to risk weighted assets, ratio 12.03% 11.42%
Total capital to risk weighted assets, for capital adequacy purposes, amount $ 557,428 $ 498,707
Total capital to risk weighted assets, for capital adequacy purposes, ratio 8.00% 8.00%
Total capital to risk weighted assets, to be well capitalized under prompt corrective action provisions, amount $ 696,786 $ 623,384
Total capital to risk weighted assets, to be well capitalized under prompt corrective action provisions, ratio 10.00% 10.00%
Tier 1 capital to average assets, amount $ 769,116 $ 651,703
Tier 1 capital to average assets, ratio 9.89% 9.35%
Tier 1 capital to average assets, for capital adequacy purposes, amount $ 311,206 $ 278,954
Tier 1 capital to average assets, for capital adequacy purposes, ratio 4.00% 4.00%
Tier 1 capital to average assets, to be well capitalized under prompt corrective action provisions, amount $ 389,007 $ 348,693
Tier 1 capital to average assets, to be well capitalized uner prompt corrective action provisions, ratio 5.00% 5.00%