Income Taxes - Summary of Activity in Total Valuation Allowances (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Valuation Allowances and Reserves, Balance at Beginning of Year	$ 2,252	$ 12,066	$ 16,604
Additions
Recoveries	(818)	(9,814)	(2,425)
Deconsolidation of Eltmann subsidiary			(2,113)
Valuation Allowances and Reserves, Balance at End of Year	$ 1,434	$ 2,252	$ 12,066