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Summary Revolving Line of Credit And Various Notes Payable Constitute Short-Term and Long-Term Loan Balances Together (Detail) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Extinguishment of Debt [Line Items]    
Indebtedness, Long-term $ 87,614 $ 98,605
Indebtedness, Short-term 10,072 71
Total indebtedness 97,686 98,676
Revolving Line of Credit    
Extinguishment of Debt [Line Items]    
Indebtedness, Long-term 88,400 99,400
Total indebtedness 88,400 99,400
Deferred Loan Fees    
Extinguishment of Debt [Line Items]    
Indebtedness, Long-term (804) (850)
Total indebtedness (804) (850)
Notes payable    
Extinguishment of Debt [Line Items]    
Indebtedness, Long-term 18 55
Indebtedness, Short-term 10,072 71
Total indebtedness $ 10,090 $ 126