Schedule of Reconciliation of Segment Expenditures for Property, Plant and Equipment to Condensed Consolidated Total Expenditures for Property, Plant, and Equipment (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Asset Reconciling Item [Line Items]
Total expenditures for property, plant and equipment	$ 63,580	$ 65,394	$ 44,582
Operating Segments
Segment Reporting Asset Reconciling Item [Line Items]
Total expenditures for property, plant and equipment	62,420	58,042	41,415
Corporate, Non-Segment
Segment Reporting Asset Reconciling Item [Line Items]
Total expenditures for property, plant and equipment	$ 1,160	$ 7,352	$ 3,167