Quantitative Information Regarding Significant Unobservable Inputs (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 Item	Dec. 31, 2012
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items]
Bond equivalent yield discount rate	10.00%
Contingent Consideration
Fair Value Assets And Liabilities Measured On Unobservable Inputs [Line Items]
Fair Value	$ (31)	$ 0
Valuation Technique	Income Approach
Total term	5 years
Conditions	3
Bond equivalent yield discount rate	0.10%