Annual report pursuant to Section 13 and 15(d)

Long-Term Borrowings - Long-Term Borrowings (Detail)

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Long-Term Borrowings - Long-Term Borrowings (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Debt Instrument [Line Items]    
Capital lease obligations $ 0 $ 10
Long-term borrowings 128,516 140,185
Less current installments 12,028 11,668
Total long-term borrowings 116,488 128,517
Note payable to bank one [Member]
   
Debt Instrument [Line Items]    
Note payable to bank 78,908 79,916
Note payable to bank two [Member]
   
Debt Instrument [Line Items]    
Note payable to bank 23,573 29,010
Note payable to bank three [Member]
   
Debt Instrument [Line Items]    
Note payable to bank 24,265 29,213
Note payable to TCF Equipment Finance, Inc. [Member]
   
Debt Instrument [Line Items]    
Note payable to TCF Equipment Finance, Inc. $ 1,770 $ 2,036