Other Intangible Assets - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill And Intangible Assets Disclosure [Abstract]
Weighted-average amortization period	15 years 4 months 24 days
Total amortization expense for other intangible assets	$ 164,000	$ 198,000	$ 700,000
Intangible asset impairment charges	$ 0	$ 0