Line of Credit - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 29, 2014
Line of Credit Facility [Line Items]
Available line of credit	$ 30.0
Line of credit, variable rate basis	LIBOR plus
Letter of credit	2.25
Total borrowing capacity amount reduced	$ 2.25
LIBOR | Minimum
Line of Credit Facility [Line Items]
Line of credit basis spread on variable rate	1.50%
LIBOR | Maximum
Line of Credit Facility [Line Items]
Line of credit basis spread on variable rate	2.00%