Debt - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	0 Months Ended	6 Months Ended
	Oct. 30, 2013	Jun. 30, 2014	Oct. 30, 2013
Line of Credit Facility [Line Items]
Amended and restated credit agreement			$ 65
Revolving credit facility increased amount limit	35
Debt instrument, Description of variable rate basis		Prime or LIBOR
Outstanding debt maturity date		Oct. 30, 2018
Credit agreement outstanding		27.0
Credit agreement interest rate		1.40%
Fair value of debt		27.0
Standby Letters of Credit [Member]
Line of Credit Facility [Line Items]
Amended and restated credit agreement	10		10
Swingline Loan [Member]
Line of Credit Facility [Line Items]
Amended and restated credit agreement	$ 10		$ 10
Minimum [Member] | Prime Rate [Member]
Line of Credit Facility [Line Items]
Interest rate for revolving credit facility		0.25%
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Interest rate for revolving credit facility		1.25%
Maximum [Member] | Prime Rate [Member]
Line of Credit Facility [Line Items]
Interest rate for revolving credit facility		1.00%
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Interest rate for revolving credit facility		2.00%