Annual report pursuant to Section 13 and 15(d)

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

v3.6.0.2
Long-Term Borrowings - Long-Term Borrowings (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Long-term borrowings $ 68,942 $ 84,595
Less current installments 1,783 15,653
Total long-term borrowings 67,159 68,942
Modification Loan [Member] | Construction Loan Agreement [Member] | Joint Venture with HF Logistics [Member]    
Debt Instrument [Line Items]    
Long-term borrowings 68,059 69,515
Second Note [Member] | Equipment Notes [Member]    
Debt Instrument [Line Items]    
Long-term borrowings   13,886
Notes payable to TCF Finance [Member] | Equipment Notes [Member]    
Debt Instrument [Line Items]    
Long-term borrowings $ 883 $ 1,194