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Capital Stock - Schedule of Unamortized Value of Restricted Stock (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Amortization Expense [Line Items]    
Total Unamortized value $ 1,208 $ 700
2nd quarter 2014 [Member]
    
Amortization Expense [Line Items]    
Total Unamortized value 153  
3rd quarter 2014 [Member]
    
Amortization Expense [Line Items]    
Total Unamortized value 153  
4th quarter 2014 [Member]
    
Amortization Expense [Line Items]    
Total Unamortized value 153  
1st quarter 2015 [Member]
    
Amortization Expense [Line Items]    
Total Unamortized value 146  
2nd quarter 2015 [Member]
    
Amortization Expense [Line Items]    
Total Unamortized value 107  
3rd quarter 2015 [Member]
    
Amortization Expense [Line Items]    
Total Unamortized value 107  
4th quarter 2015 [Member]
    
Amortization Expense [Line Items]    
Total Unamortized value 107  
1st quarter 2016 [Member]
    
Amortization Expense [Line Items]    
Total Unamortized value 100  
2nd quarter 2016 [Member]
    
Amortization Expense [Line Items]    
Total Unamortized value 53  
3rd quarter 2016 [Member]
    
Amortization Expense [Line Items]    
Total Unamortized value 53  
4th quarter 2016 [Member]
    
Amortization Expense [Line Items]    
Total Unamortized value 53  
1st quarter 2017 [Member]
    
Amortization Expense [Line Items]    
Total Unamortized value $ 23