Intangible and Other Assets - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of Intangible Assets Disclosure [Line Items]
Amortization expense for intangible assets	$ 1,173	$ 1,224	$ 1,131
Estimated amortization expense for intangible assets for year one	1,162
Estimated amortization expense for intangible assets for year two	1,086
Estimated amortization expense for intangible assets for year three	734
Estimated amortization expense for intangible assets for year four	638
Estimated amortization expense for intangible assets for year five	$ 565