Covered Loans Thirty to Eighty Nine Days, Ninety Days or More Past Due (Detail) (Covered Loans, USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 90 days or more past due	$ 173,992	$ 211,485
Loans 30-89 Days Past Due	48,833	57,929
One-to-four family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 90 days or more past due	164,266	201,425
Loans 30-89 Days Past Due	44,834	52,250
Other loan
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans 90 days or more past due	9,726	10,060
Loans 30-89 Days Past Due	$ 3,999	$ 5,679