Other Comprehensive Earnings - Reclassifications Out of Accumulated Other Comprehensive Earnings/(Loss) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 30, 2014	Mar. 31, 2013
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Abstract]
Tax expense	$ 3,945	$ (1,306)
Net earnings	5,080	3,568
Total before tax	9,025	1,681
Reclassification out of Accumulated Other Comprehensive Earnings [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Abstract]
Net earnings	987
Realized Loss [Member] | Reclassification out of Accumulated Other Comprehensive Earnings [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Abstract]
Tax expense	45
Net earnings	73
Realized Loss [Member] | Reclassification out of Accumulated Other Comprehensive Earnings [Member] | Interest Rate Swap [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Abstract]
Interest expense	118
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Earnings [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Abstract]
Tax expense	536
Net earnings	914
Total before tax	1,450
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Earnings [Member] | Prior Service Costs [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Abstract]
Cost of goods sold and operating expense
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Earnings [Member] | Loss included in net periodic pension costs [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Abstract]
Cost of goods sold and operating expense	1,433
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Earnings [Member] | Foreign exchange impact [Member]
Reclassification Adjustment Out of Accumulated Other Comprehensive Income [Abstract]
Other expense	$ 17