Property, Plant and Equipment - Property, Plant and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property Plant And Equipment [Abstract]
Land and land improvements	$ 5,122	$ 5,006
Buildings	44,116	43,411
Machinery and equipment	250,936	237,473
Construction-in-process	5,315	7,493
Other	8,711	8,674
Property, plant and equipment, Gross	314,200	302,057
Accumulated depreciation	(162,912)	(151,760)
Property, plant and equipment, Net	$ 151,288	$ 150,297