Note 9 - Disclosures about Fair Value (Detail) - Fair Value of Mortgage Loans (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Mortgage loans held for sale	$ 122,398
Fair Value, Inputs, Level 2 [Member]
Mortgage loans held for sale	$ 122,398

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents mortgage loans held-for-sale as presented on the statement of financial position which are due the Company as of the balance sheet date.

No definition available.

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