v3.3.1.900

Regulatory Matters (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Enterprise Financial Services Corp [Member] |  |
Total Capital (to Risk Weighted Assets) [Abstract] |  |
Actual, Amount | $ 418,367 | $ 369,868
Actual, Ratio | 11.85% | 13.40%
For Capital Adequacy Purposes, Amount | $ 282,442 | $ 220,858
For Capital Adequacy Purposes, Ratio | 8.00% | 8.00%
To Be Well Capitalized Under Applicable Action Provisions, Amount | $ 0 | $ 0
To Be Well Capitalized Under Applicable Action Provisions, Ratio | 0.00% | 0.00%
Tier 1 Capital (to Risk Weighted Assets) [Abstract] |  |
Actual, Amount | $ 374,676 | $ 335,221
Actual, Ratio | 10.61% | 12.14%
For Capital Adequacy Purposes, Amount | $ 211,831 | $ 110,429
For Capital Adequacy Purposes, Ratio | 6.00% | 4.00%
To Be Well Capitalized Under Applicable Action Provisions, Amount | $ 0 | $ 0
To Be Well Capitalized Under Applicable Action Provisions, Ratio | 0.00% | 0.00%
Tier One Common Equity Capital | $ 319,553 |
Tier One Common Equity Capital to Risk Weighted Assets | 9.05% |
Tier One Common Equity Capital Required for Capital Adequacy | $ 158,873 |
Tier One Common Equity Capital Required for Capital Adequacy to Risk Weighted Assets | 4.50% |
Tier One Common Equity Capital Required to be Well Capitalized | $ 0 |
Tier One Common Equity Capital Required to be Well Capitalized to Risk Weighted Assets | 0.00% |
Tier 1 Capital (to Average Assets) [Abstract] |  |
Actual, Amount | $ 374,676 | $ 335,221
Actual, Ratio | 10.71% | 10.48%
For Capital Adequacy Purposes, Amount | $ 139,893 | $ 96,000
For Capital Adequacy Purposes, Ratio | 4.00% | 3.00%
To Be Well Capitalized Under Applicable Action Provisions, Amount | $ 0 | $ 0
To Be Well Capitalized Under Applicable Action Provisions, Ratio | 0.00% | 0.00%
Enterprise Bank and Trust [Member] |  |
Total Capital (to Risk Weighted Assets) [Abstract] |  |
Actual, Amount | $ 386,531 | $ 343,334
Actual, Ratio | 10.98% | 12.51%
For Capital Adequacy Purposes, Amount | $ 281,632 | $ 219,645
For Capital Adequacy Purposes, Ratio | 8.00% | 8.00%
To Be Well Capitalized Under Applicable Action Provisions, Amount | $ 352,040 | $ 274,556
To Be Well Capitalized Under Applicable Action Provisions, Ratio | 10.00% | 10.00%
Tier 1 Capital (to Risk Weighted Assets) [Abstract] |  |
Actual, Amount | $ 342,840 | $ 308,874
Actual, Ratio | 9.74% | 11.25%
For Capital Adequacy Purposes, Amount | $ 211,224 | $ 109,823
For Capital Adequacy Purposes, Ratio | 6.00% | 4.00%
To Be Well Capitalized Under Applicable Action Provisions, Amount | $ 281,632 | $ 164,734
To Be Well Capitalized Under Applicable Action Provisions, Ratio | 8.00% | 6.00%
Tier One Common Equity Capital | $ 342,816 |
Tier One Common Equity Capital to Risk Weighted Assets | 9.74% |
Tier One Common Equity Capital Required for Capital Adequacy | $ 158,418 |
Tier One Common Equity Capital Required for Capital Adequacy to Risk Weighted Assets | 4.50% |
Tier One Common Equity Capital Required to be Well Capitalized | $ 228,826 |
Tier One Common Equity Capital Required to be Well Capitalized to Risk Weighted Assets | 6.50% |
Tier 1 Capital (to Average Assets) [Abstract] |  |
Actual, Amount | $ 342,840 | $ 308,874
Actual, Ratio | 9.84% | 9.71%
For Capital Adequacy Purposes, Amount | $ 139,311 | $ 95,411
For Capital Adequacy Purposes, Ratio | 4.00% | 3.00%
To Be Well Capitalized Under Applicable Action Provisions, Amount | $ 174,138 | $ 159,018
To Be Well Capitalized Under Applicable Action Provisions, Ratio | 5.00% | 5.00%

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- Definition The minimum Total risk based capital ratio (total 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 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35709795&loc=d3e65071-112826 Reference 3: 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 + Details
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- Definition The amount of Total Capital required to be categorized as well as 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 -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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