Guarantees - Details of Letters of Credit Outstanding (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 29, 2013
Guarantor Obligations [Line Items]
Guarantee Amount	$ 1,548
Bank Guarantees [Member]
Guarantor Obligations [Line Items]
Guarantee Amount	294
Guarantee due date	Various from October 2013 to November 2013
Performance Bonds [Member]
Guarantor Obligations [Line Items]
Guarantee Amount	159
Guarantee due date	Various from January 2015 to March 2016
Warranty Bonds [Member]
Guarantor Obligations [Line Items]
Guarantee Amount	$ 1,095
Guarantee due date	Various from October 2013 to August 2015