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Shareholders' Equity, Dividends Restrictions and Other Regulatory Matters (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |
Tier 1 Risk Based Capital to Risk Weighted Assets | 14.26% |  |
Tier 1 Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets | 4.00% |  |
Capital Required for Capital Adequacy to Risk Weighted Assets | 8.00% |  |
Leverage Capital Required Ratio To Tangible Assets | 3.00% |  |
Trust Preferred Securities | $ 93,500,000 |  |
Percent Of Trust Preferred Securities Excluded From Tier One Starting In 2013 | 75.00% |  |
Proforma Tier 1 Leverage Ratio | 9.38% |  |
Proforma Tier 1 Risk Based Ratio | 14.26% |  |
Proforma Total Risk Based Ratio | 15.76% |  |
Tier 2 capital | 25,000,000 | 50,000,000 |
Stock Repurchased During Period, Shares | 0 |  |
Amount Available for Dividend Distribution without Prior Approval from Regulatory Agency | 1,410,000,000 |  |
Maximum Undivided Profits Elgible For Dividend Payment Without Changing Well Capitalized Status | 781,300,000 |  |
Average Required Maintence Of Non Interst Bearing Reserve Balance | 313,400,000 |  |
Common Class A [Member] |  |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |
Votes per share of common stock | 1 |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased | 100,000 | 100,000 |
Stock Repurchased During Period, Shares |  | 56,276 |
Class B Common Stock |  |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |
Votes per share of common stock | 16 |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased | 25,000 | 25,000 |
Stock Repurchased During Period, Shares | 0 | 100 |
Stock Repurchased and Retired During Period, Shares |  | 606,829 |
Class B Common Stock | Majority Shareholder [Member] |  |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |
Stock Repurchased and Retired During Period, Shares |  | 593,954 |
BancShares [Member] |  |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |
Tier 1 Capital for Capital Adequacy | 2,109,139,000 | 1,949,985,000 |
Capital Required for Capital Adequacy | 2,320,792,000 | 2,179,370,000 |
Leverage Capital Required for Capital Adequacy | 2,109,139,000 | 1,949,985,000 |
Tier 1 Risk Based Capital to Risk Weighted Assets | 14.92% | 14.27% |
Capital to Risk Weighted Assets | 16.42% | 15.95% |
Leverage Capital to Average Assets | 9.82% | 9.23% |
Tier 1 Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets | 6.00% | 6.00% |
Capital Required to be Well Capitalized | 10.00% | 10.00% |
Leverage Capital Required to be Well Capitalized to Average Assets | 5.00% | 5.00% |
FCB [Member] |  |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |
Tier 1 Capital for Capital Adequacy | 1,983,349,000 | 1,942,101,000 |
Capital Required for Capital Adequacy | 2,184,461,000 | 2,163,034,000 |
Leverage Capital Required for Capital Adequacy | 1,983,349,000 | 1,942,101,000 |
Tier 1 Risk Based Capital to Risk Weighted Assets | 14.14% | 14.37% |
Capital to Risk Weighted Assets | 15.57% | 16.00% |
Leverage Capital to Average Assets | 9.36% | 9.34% |
Tier 1 Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets | 6.00% | 6.00% |
Capital Required to be Well Capitalized | 10.00% | 10.00% |
Leverage Capital Required to be Well Capitalized to Average Assets | 5.00% | 5.00% |
Parent [Member] |  |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |
Dividends from subsidiaries | $ 131,006,000 | $ 179,588,000 | $ 82,812,000

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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 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7881181&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=7881181&loc=SL5958568-112826 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=7881181&loc=SL5958570-112826 + Details
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- Definition Total Capital divided by risk weighted assets as defined in the regulations. + 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=7881181&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=7881181&loc=SL5958568-112826 + Details
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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30 -Article 5 + Details
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- Definition Tier 1 Risk Based Capital as defined in the regulations. + 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=7881181&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=7881181&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 1H -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=7881181&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=7881181&loc=SL5958568-112826 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=7881181&loc=SL5958570-112826 + 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=7881181&loc=SL5958568-112826 + Details
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