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Payment Amounts for Related Party Liability (Detail) (Hirsch, Related Party, USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Hirsch | Related Party
 
Related Party Transaction [Line Items]  
2014 $ 1,118
2015 1,159
2016 1,205
2017 1,253
2018 1,303
Thereafter 3,248
Present value discount factor (2,565)
Total $ 6,721