XML 54 R56.htm IDEA: XBRL DOCUMENT v2.4.0.8
Property and Equipment Net - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Property, Plant and Equipment [Line Items]      
Property and equipment, depreciation and amortization expense $ 0.4 $ 0.4 $ 0.6