• Filing Date: 2020-03-06
  • Form Type: 10-K
  • Description: Annual report
v3.19.3.a.u2
Long-Term Debt (4.55% Promissory Note) - Additional Information (Detail)
$ in Thousands
12 Months Ended
Jul. 06, 2018
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Debt Instrument [Line Items]      
Proceeds from issuance of long-term debt   $ 6,000 $ 143,859
4.55% Promissory note [Member]      
Debt Instrument [Line Items]      
Secured loan agreement period 18 years    
Proceeds from issuance of long-term debt $ 6,000    
Debt instrument stated interest rate 4.55%    
Debt instrument, payment frequency description monthly    
Number of installment payments 216    
Debt instrument periodic payment $ 41    
Debt instruments, payment terms description The promissory note may be repaid in full or in part after September 1, 2020 as long as the Company provides at least 30 days’ written notice and pays a prepayment consideration as specified in the loan agreement.