Quarterly report pursuant to Section 13 or 15(d)

Significant Accounting Policies - Investments in Venezuelan Bonds (Detail)

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Significant Accounting Policies - Investments in Venezuelan Bonds (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Schedule of Available-for-sale Securities [Line Items]  
Amortized Cost, Total investments $ 2,835
Investments in Venezuelan bonds, Market Value 2,835
Venezuelan bonds [Member]
 
Schedule of Available-for-sale Securities [Line Items]  
Amortized Cost, Total investments 2,835
Investments in Venezuelan bonds, Gross Unrealized Gain   
Investments in Venezuelan bonds, Gross Unrealized Loss   
Investments in Venezuelan bonds, Net Unrealized Gain   
Investments in Venezuelan bonds, Market Value $ 2,835