Derivative Instruments - Assets and liabilities presented on a net basis due to the right of setoff (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2014	Dec. 31, 2013
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross amounts of recognized assets	$ 142	$ 210
Gross amounts offset	0	0
Net amount of assets presented	142	210
Gross amounts of recognized liabilities	120	122
Gross amounts offset	(6)	0
Net amount of liabilities presented	$ 114	$ 122