XML 35 R58.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Debt - Additional Information (Details)
12 Months Ended
Mar. 08, 2018
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Debt Instrument [Line Items]      
Outstanding borrowing under the revolving credit facility   $ 90,000,000.0 $ 81,500,000
Consolidated fixed charge coverage ratio (in percentage)   3.0  
Fixed charge coverage ratio (in percentage)   1.5  
Fixed Rate Debt      
Debt Instrument [Line Items]      
Estimated fair value of debt   $ 501,500,000 489,000,000.0
Senior Secured Revolving Credit Facility      
Debt Instrument [Line Items]      
Outstanding borrowing under the revolving credit facility   90,000,000.0 81,500,000
Maximum borrowing availability under revolving credit facility   250,000,000.0  
Estimated fair value of debt   $ 90,000,000 $ 81,500,000
Senior Secured Revolving Credit Facility | Minimum      
Debt Instrument [Line Items]      
Debt instrument, basis spread on variable rate 0.00%    
Senior Secured Revolving Credit Facility | Maximum      
Debt Instrument [Line Items]      
Debt instrument, basis spread on variable rate 1500.00%    
LIBOR | Variable rate debt      
Debt Instrument [Line Items]      
Debt instrument, basis spread on variable rate   1.65%  
LIBOR | Senior Secured Revolving Credit Facility | Minimum      
Debt Instrument [Line Items]      
Debt instrument, basis spread on variable rate   1.55%  
LIBOR | Senior Secured Revolving Credit Facility | Maximum      
Debt Instrument [Line Items]      
Debt instrument, basis spread on variable rate   2.30%