Loans Receivable - Overall Statistics for Loans Receivable Portfolio (Parenthetical) (Detail)	Mar. 31, 2014
One-Month LIBOR [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of loans receivable by type	95.00%
Three-Month LIBOR [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of loans receivable by type	5.00%
LIBOR [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of loans receivable by type	26.00%
Average floor rate	0.35%