• Filing Date: 2018-03-07
  • Form Type: 10-K
  • Description: Annual report
v3.8.0.1
Long-Term Debt (3.95% Promissory Note) - Additional Information (Detail)
12 Months Ended
Feb. 27, 2017
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 15, 2016
USD ($)
Debt Instrument [Line Items]        
Outstanding balance under revolving credit facility   $ 9,441,000    
Additional borrowings from revolving credit facility   $ 143,859,000 $ 18,200,000  
Maximum borrowing limit       $ 9,550,000
3.95% Promissory Note [Member]        
Debt Instrument [Line Items]        
Outstanding balance under revolving credit facility $ 9,441,000      
Debt Instrument term 3 years      
Additional borrowings from revolving credit facility $ 109,000      
Maximum borrowing limit $ 9,550,000      
Fixed annual interest rate 3.95% 3.95%    
Debt instrument periodic payment $ 50,000      
Debt instrument, payment frequency description   Monthly    
Number of installment payments 35      
Date of initial payment Mar. 17, 2017      
Debt instrument, balloon payment to be paid $ 8,891,000      
Debt instruments, payment terms description   The promissory note may be repaid in part or in full at any time without penalty.