Assets Measured At Fair Value on Nonrecurring Basis (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended
	Jan. 31, 2014 store	Dec. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Held for Sale		$ 6,356	$ 15,840
RIMCO
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Held for Sale			$ 9,700
Number of stores sold during period	27