FDIC Indemnification Asset (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
FDIC indemnification asset components
Receivable related to loss claims incurred, not yet reimbursed	$ 7,036	$ 12,649	$ 40,401
Receivable related to estimated future claims on loans	20,196	33,398	45,866
Receivable related to estimated future claims on foreclosed real estate	2,174	2,575	6,683
FDIC indemnification asset	$ 29,406	$ 48,622	$ 92,950

Carrying amount of receivable assets originating from the indemnification agreement with the Federal Deposit Insurance Corporation (FDIC), in which the FDIC is to partially cover losses.

No definition available.

Name:	us-gaap_FDICIndemnificationAsset
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant