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Regulatory Matters (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Summary of State Bank's actual capital amounts and ratios |  |
Tier I Capital to average assets actual amount | $ 74,183 | $ 64,914
Tier I Capital to average assets for capital adequacy purposes amount | 31,875 | 28,534
Tier I Capital to average assets to be well capitalized under prompt corrective action procedures amount | 39,844 | 35,668
Tier I Common equity capital to risk-weighted assets actual amount | 74,183 | 64,914
Tier I Common equity capital to risk-weighted assets for capital adequacy purposes | 32,477 | 28,545
Tier I Common equity capital to risk-weighted assets to be well capitalized under prompt corrective action procedures amount | 46,912 | 41,231
Tier I Capital to risk-weighted assets actual amount | 74,183 | 64,914
Tier I Capital to risk-weighted assets for capital adequacy purposes | 43,303 | 38,059
Tier I Capital to risk-weighted assets to be well capitalized under prompt corrective action procedures | 57,738 | 50,746
Total Risk-based capital to risk-weighted assets actual amount | 81,908 | 71,904
Total Risk-based capital to risk-weighted assets for capital adequacy purposes amount | 57,738 | 50,746
Total Risk-based capital to risk-weighted assets to be well capitalized under prompt corrective action procedures amount | $ 72,172 | $ 63,432
Tier I Capital to average assets actual ratio | 9.31% | 9.10%
Tier I Capital to average assets for capital adequacy purposes ratio | 4.00% | 4.00%
Tier I Capital to average assets to be well capitalized under prompt corrective action procedures ratio | 5.00% | 5.00%
Tier I Common equity capital to risk-weighted assets actual ratio | 10.28% | 10.23%
Tier I Common equity capital to risk-weighted assets for capital adequacy purposes | 4.50% | 4.50%
Tier I Common equity capital to risk-weighted assets to be well capitalized under prompt corrective action procedures ratio | 6.50% | 6.50%
Tier I Capital to risk-weighted assets actual ratio | 10.28% | 10.23%
Tier I Capital to risk-weighted assets for capital adequacy purposes ratio | 6.00% | 6.00%
Tier I Capital to risk-weighted assets to be well capitalized under prompt corrective action procedures ratio | 8.00% | 8.00%
Total Risk-based capital to risk-weighted assets actual ratio | 11.35% | 11.34%
Total Risk-based capital to risk-weighted assets capital adequacy purposes ratio | 8.00% | 8.00%
Total Risk-based capital to risk-weighted assets to be well capitalized under prompt corrective action procedures ratio | 10.00% | 10.00%

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- Definition The minimum amount of Tier 1 Risk Based Capital required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 + Details
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- Definition The minimum Tier One Capital Ratio (Tier one capital divided by risk-weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958570-112826 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 + Details
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- Definition The Tier 1 capital ratio (Tier 1 capital divided by risk weighted assets) required to be categorized as "well capitalized" under the regulatory framework for prompt corrective action. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958568-112826 + Details
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