Commitments and Contingencies	3 Months Ended
Mar. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies In order to meet the financing needs of its customers, BancShares and its subsidiaries have financial instruments with off-balance sheet risk. These financial instruments include commitments to extend credit, standby letters of credit, and recourse obligations on mortgage loans sold. These instruments involve elements of credit, interest rate or liquidity risk. Commitments to extend credit are legally binding agreements to lend to customers. Commitments generally have fixed expiration dates or other termination clauses and may require payment of fees. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future liquidity requirements. Established credit standards control the credit-risk exposure associated with these commitments. In some cases, BancShares requires that collateral be pledged to secure the commitment including cash deposits, securities and other assets. At March 31, 2012 BancShares had unused commitments totaling $5,748,952 compared to $5,636,942 at December 31, 2011 and $5,704,757 at March 31, 2011. Standby letters of credit are commitments guaranteeing performance of a customer to a third party. Those guarantees are issued primarily to support public and private borrowing arrangements. In order to minimize its exposure, BancShares’ credit policies govern the issuance of standby letters of credit. At March 31, 2012, December 31, 2011, and March 31, 2011, BancShares had standby letters of credit amounting to $59,798, $57,446 and $71,942, respectively. The credit risk related to the issuance of these letters of credit is essentially the same as that involved in extending loans to clients, and therefore, these letters of credit are collateralized when necessary. Residential mortgage loans sold with limited recourse liability represent guarantees to repurchase the loans or repay a portion of the sale proceeds in the event of nonperformance by the borrower. The recourse period is generally 120 days or less. At March 31, 2012, December 31, 2011 and March 31, 2011, BancShares has sold loans of approximately $210,789, $207,963 and $191,606 respectively for which the recourse period had not yet elapsed. Of these loans at March 31, 2012, $161,937 represent loans that would require repurchase in the event of nonperformance by the borrower. Any loans that are repurchased under the recourse obligation would carry the same credit risk as mortgage loans originated by the company and would be collateralized in the same manner. BancShares and various subsidiaries have been named as defendants in various legal actions arising from their normal business activities in which damages in various amounts are claimed. BancShares is also exposed to litigation risk relating to the prior business activities of banks from which assets were acquired and liabilities assumed in the various FDIC-assisted transactions. Although the amount of any ultimate liability with respect to such matters cannot be determined, in the opinion of management, any such liability will not have a material effect on BancShares’ consolidated financial statements. During February 2011, United Western Bank, United Western’s parent company, United Western Bancorp, and five of their directors filed a complaint in the United States District Court for the District of Columbia against the FDIC, the OTS and others, claiming that the seizure of United Western by the OTS and the subsequent appointment of the FDIC as receiver was illegal. The complaint requested the court to direct the OTS to remove the FDIC as receiver, return control of United Western to the plaintiffs, reimburse the plaintiffs for their costs and attorney fees and to award plaintiffs other relief as may be just and equitable. Neither BancShares nor FCB were named in the complaint. The defendants filed motions to dismiss all claims against them and, during June 2011, the Court dismissed all claims by the holding company and the individual directors, and it dismissed United Western Bank’s claim against the FDIC. However, the Court denied the motion to dismiss United Western Bank’s claim against the OTS, which permits that claim to proceed. It is unclear what impact, if any, the litigation will have on FCB or the assets acquired in the United Western transaction. During March 2012, FCB received communications from the U.S. Small Business Administration (SBA) asserting that the SBA is entitled to receive proportionate shares of certain amounts paid or to be paid by the FDIC to FCB pursuant to the Loss Share Agreement between FCB and the FDIC applicable to Temecula Valley Bank. The SBA makes reference to the treatment of guarantee, insurance and surety proceeds under the SBA 750 Loan Guaranty Agreement and the 7(a) Loan Program Requirements. FCB disagrees with the SBA's position, and intends to vigorously protect its interests in this matter. FCB is presently unable to determine the related outcome or range of loss, if any, related to this claim. FCB has recently identified issues in its compliance with certain Treasury Regulations governing the provision of information returns to customers relating to debt presumed to have been forgiven for tax purposes. FCB is currently investigating this matter, including analyzing the scope and potential financial impact. FCB is presently unable to determine the related outcome or range of loss, if any, and the period of time necessary to resolve this matter is uncertain.

Commitments and Contingencies

In order to meet the financing needs of its customers, BancShares and its subsidiaries have financial instruments with off-balance sheet risk. These financial instruments include commitments to extend credit, standby letters of credit, and recourse obligations on mortgage loans sold. These instruments involve elements of credit, interest rate or liquidity risk.

Commitments to extend credit are legally binding agreements to lend to customers. Commitments generally have fixed expiration dates or other termination clauses and may require payment of fees. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future liquidity requirements. Established credit standards control the credit-risk exposure associated with these commitments. In some cases, BancShares requires that collateral be pledged to secure the commitment including cash deposits, securities and other assets. At March 31, 2012 BancShares had unused commitments totaling $5,748,952 compared to $5,636,942 at December 31, 2011 and $5,704,757 at March 31, 2011.

Standby letters of credit are commitments guaranteeing performance of a customer to a third party. Those guarantees are issued primarily to support public and private borrowing arrangements. In order to minimize its exposure, BancShares’ credit policies govern the issuance of standby letters of credit. At March 31, 2012, December 31, 2011, and March 31, 2011, BancShares had standby letters of credit amounting to $59,798, $57,446 and $71,942, respectively. The credit risk related to the issuance of these letters of credit is essentially the same as that involved in extending loans to clients, and therefore, these letters of credit are collateralized when necessary.

Residential mortgage loans sold with limited recourse liability represent guarantees to repurchase the loans or repay a portion of the sale proceeds in the event of nonperformance by the borrower. The recourse period is generally 120 days or less. At March 31, 2012, December 31, 2011 and March 31, 2011, BancShares has sold loans of approximately $210,789, $207,963 and $191,606 respectively for which the recourse period had not yet elapsed. Of these loans at March 31, 2012, $161,937 represent loans that would require repurchase in the event of nonperformance by the borrower. Any loans that are repurchased under the recourse obligation would carry the same credit risk as mortgage loans originated by the company and would be collateralized in the same manner.

BancShares and various subsidiaries have been named as defendants in various legal actions arising from their normal business activities in which damages in various amounts are claimed. BancShares is also exposed to litigation risk relating to the prior business activities of banks from which assets were acquired and liabilities assumed in the various FDIC-assisted transactions. Although the amount of any ultimate liability with respect to such matters cannot be determined, in the opinion of management, any such liability will not have a material effect on BancShares’ consolidated financial statements.

During February 2011, United Western Bank, United Western’s parent company, United Western Bancorp, and five of their directors filed a complaint in the United States District Court for the District of Columbia against the FDIC, the OTS and others, claiming that the seizure of United Western by the OTS and the subsequent appointment of the FDIC as receiver was illegal. The complaint requested the court to direct the OTS to remove the FDIC as receiver, return control of United Western to the plaintiffs, reimburse the plaintiffs for their costs and attorney fees and to award plaintiffs other relief as may be just and equitable. Neither BancShares nor FCB were named in the complaint. The defendants filed motions to dismiss all claims against them and, during June 2011, the Court dismissed all claims by the holding company and the individual directors, and it dismissed United Western Bank’s claim against the FDIC. However, the Court denied the motion to dismiss United Western Bank’s claim against the OTS, which permits that claim to proceed. It is unclear what impact, if any, the litigation will have on FCB or the assets acquired in the United Western transaction.

During March 2012, FCB received communications from the U.S. Small Business Administration (SBA) asserting that the SBA is entitled to receive proportionate shares of certain amounts paid or to be paid by the FDIC to FCB pursuant to the Loss Share Agreement between FCB and the FDIC applicable to Temecula Valley Bank. The SBA makes reference to the treatment of guarantee, insurance and surety proceeds under the SBA 750 Loan Guaranty Agreement and the 7(a) Loan Program Requirements. FCB disagrees with the SBA's position, and intends to vigorously protect its interests in this matter. FCB is presently unable to determine the related outcome or range of loss, if any, related to this claim.

FCB has recently identified issues in its compliance with certain Treasury Regulations governing the provision of information returns to customers relating to debt presumed to have been forgiven for tax purposes. FCB is currently investigating this matter, including analyzing the scope and potential financial impact. FCB is presently unable to determine the related outcome or range of loss, if any, and the period of time necessary to resolve this matter is uncertain.