XML 36 R29.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Receivable from FDIC for Loss Share Agreements (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2015
Receivable From FDIC For Loss Share Agreements [Abstract] |
Changes in Receivable From FDIC | The following table provides changes in the receivable from the FDIC for the three-month periods ended March 31, 2015 and March 31, 2014.
| Three months ended March 31
(Dollars in thousands) | 2015 |  | 2014
Beginning balance | $ | 28,701 |  |  | $ | 93,397 |
Amortization | (5,031 | ) |  | (17,744 | )
Cash payments to FDIC | 5,762 |  |  | 3,490 |
Post-acquisition adjustments | (8,092 | ) |  | (4,359 | )
Ending balance | $ | 21,340 |  |  | $ | 74,784 |

X
- Details
Name: | fcnca_ReceivableFromFdicForLossShareAgreementsAbstract
Namespace Prefix: | fcnca_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the change in the indemnification asset relating to loss sharing agreements with the Federal Deposit Insurance Corporation (FDIC). + References No definition available. + Details
Name: | us-gaap_FDICIndemnificationAssetRollForwardTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration