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Accounting Policies And Other Matters (Details) (USD $) In Thousands | 6 Months Ended
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Jun. 30, 2010
Accounting Policies And Other Matters |
Adjustments to fair value of assets acquired | $ 2,005

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- Definition Net Income and Retained Earnings Results in Adjustments To Fair Value Of Assets Acquired + Details
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Namespace Prefix: | fcnca
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration