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Debt Obligations - Current Maturities of Long-Term Debt and Short-Term Borrowings (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Short-term Debt [Abstract]    
Short-term borrowings $ 5,056us-gaap_ShortTermBorrowings  
Current maturities of long-term debt 3,820us-gaap_LongTermDebtCurrent 1,181us-gaap_LongTermDebtCurrent
Current maturities of long-term debt and short-term borrowings $ 8,876us-gaap_DebtCurrent $ 1,181us-gaap_DebtCurrent