Annual report pursuant to Section 13 and 15(d)

Long-Term Borrowings - Additional Information (Detail)

v3.8.0.1
Long-Term Borrowings - Additional Information (Detail) - USD ($)
12 Months Ended
Aug. 11, 2015
Dec. 31, 2017
Nov. 16, 2012
Apr. 30, 2010
Debt Instrument [Line Items]        
Interest rate swap agreement date   Aug. 12, 2015    
Derivative effective dates   Aug. 12, 2015    
Maturity date of swap agreement   Aug. 12, 2022    
Joint Venture with HF Logistics [Member] | Construction Loan Agreement [Member] | Interest Rate Swap [Member]        
Debt Instrument [Line Items]        
Interest rate swap agreement date   Aug. 14, 2015    
Derivative effective dates   Aug. 12, 2015    
Maturity date of swap agreement   Aug. 12, 2022    
Derivative early termination date   Aug. 01, 2020    
Effective fixed interest rate of loan with swap   4.08%    
Original Modified Loan [Member] | Joint Venture with HF Logistics [Member] | Construction Loan Agreement [Member]        
Debt Instrument [Line Items]        
Debt instrument maturity date   Oct. 30, 2015    
Modification Loan [Member] | Joint Venture with HF Logistics [Member] | Construction Loan Agreement [Member]        
Debt Instrument [Line Items]        
Debt instrument maturity date   Aug. 12, 2020    
Outstanding principal balance of the original loan $ 77,300,000      
Capital contribution made by the company 38,700,000      
Ownership percentage joint venture   50.00%    
Current borrowing capacity $ 70,000,000      
Payment of accrued interest, loan fees and other closing costs   $ 900,000    
Distribution made by JV   $ 31,300,000    
Description of maturity date of debt instrument   The maturity date of the New Loan is August 12, 2020, which HF-T1 has one option to extend by an additional 24 months, or until August 12, 2022, upon payment of a fee and satisfaction of certain customary conditions.    
Modification Loan [Member] | Joint Venture with HF Logistics [Member] | Construction Loan Agreement [Member] | LIBOR Loans [Member]        
Debt Instrument [Line Items]        
Debt instrument basis spread on variable rate   LIBOR Daily Floating Rate (as defined in the Amended Loan Agreement) plus a margin of 2%.    
Interest rate of line of credit agreement   2.00%    
Maximum [Member] | Equipment Notes [Member]        
Debt Instrument [Line Items]        
Borrowing under loan agreement     $ 80,000,000  
Maximum [Member] | Original Loan [Member] | Joint Venture with HF Logistics [Member] | Construction Loan Agreement [Member]        
Debt Instrument [Line Items]        
Borrowing under loan agreement       $ 55,000,000