Financial Condition accounts outstanding with PRLP 2011 Holdings, LLC (Detail) (Prlp2011 Holdings Llc Joint Venture [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Scenario Actual Member
Related Party Transaction [Line Items]
Total	$ 61,565	$ 86,103
Scenario Actual Member | Loan
Related Party Transaction [Line Items]
Loans	67,746	86,167
Scenario Actual Member | Deposits Member
Related Party Transaction [Line Items]
Deposits	6,366	64
Scenario Actual Member | Other Assets Member
Related Party Transaction [Line Items]
Accounts Receivable Related Parties	185	0
Scenario Consolidated [Member]
Related Party Transaction [Line Items]
Total	46,235	64,663
Scenario Consolidated [Member] | Loan
Related Party Transaction [Line Items]
Loans	50,877	64,711
Scenario Consolidated [Member] | Deposits Member
Related Party Transaction [Line Items]
Deposits	4,781	48
Scenario Consolidated [Member] | Other Assets Member
Related Party Transaction [Line Items]
Accounts Receivable Related Parties	139	0
Eliminationsinterest [Member]
Related Party Transaction [Line Items]
Total	15,330	21,440
Eliminationsinterest [Member] | Loan
Related Party Transaction [Line Items]
Loans	16,869	21,456
Eliminationsinterest [Member] | Deposits Member
Related Party Transaction [Line Items]
Deposits	1,585	16
Eliminationsinterest [Member] | Other Assets Member
Related Party Transaction [Line Items]
Accounts Receivable Related Parties	$ 46	$ 0