Quarterly report pursuant to Section 13 or 15(d)

Line of Credit, Short-Term and Long-Term Borrowings - Long-Term Borrowings (Detail)

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Line of Credit, Short-Term and Long-Term Borrowings - Long-Term Borrowings (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
Long-term borrowings $ 122,549 $ 128,516
Less: current installments 12,218 12,028
Total long-term borrowings 110,331 116,488
Note payable to bank one [Member]
    
Debt Instrument [Line Items]    
Note payable to banks 78,404 78,908
Note payable to bank two [Member]
    
Debt Instrument [Line Items]    
Note payable to banks 20,781 23,573
Note payable to bank three [Member]
    
Debt Instrument [Line Items]    
Note payable to banks 21,733 24,265
Notes Payable, Other Payables [Member]
    
Debt Instrument [Line Items]    
Note payable to TCF Equipment Finance, Inc. $ 1,631 $ 1,770