Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
Line of Credit, Short-Term and Long-Term Borrowings - Long-Term Borrowings (Parenthetical) (Detail)
3 Months Ended
Mar. 31, 2018
USD ($)
Note payable to Luen Thai Enterprise, LTD [Member]  
Debt Instrument [Line Items]  
Balloon payment required under note payable $ 5,741,000
Due date for note payable 2021-01
Equipment Notes [Member] | Notes payable to TCF Finance [Member]  
Debt Instrument [Line Items]  
Monthly repayment installment of note payable $ 31,000
Fixed interest rate of note payable 5.24%
Due date for note payable 2019-07
Frequency of periodic payment monthly
Joint Venture with HF Logistics [Member] | Construction Loan Agreement [Member] | Modification Loan [Member]  
Debt Instrument [Line Items]  
Monthly repayment installment of note payable $ 337,100
Variable interest rate of note payable 3.88%
Balloon payment required under note payable $ 62,843,000
Due date for note payable 2020-08
Frequency of periodic payment monthly