Summary of Property Plant and Equipment at Original Cost (Detail) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Land	Dec. 31, 2013 Buildings Minimum	Dec. 31, 2013 Buildings Maximum	Dec. 31, 2013 Machinery and equipment Minimum	Dec. 31, 2013 Machinery and equipment Maximum
Property, Plant and Equipment [Line Items]
Land	$ 5,260	$ 5,260
Buildings	31,314	30,664
Machinery and equipment	93,930	88,256
Total property, plant and equipment	$ 130,504	$ 124,180
Property, plant and equipment, useful lives			0 years	30 years	40 years	3 years	15 years