Quarterly report pursuant to Section 13 or 15(d)

Debt (Details)

v3.19.2
Debt (Details)
 6 Months Ended
Oct. 19, 2018
Jun. 30, 2019
USD ($)
Dec. 31, 2018
USD ($)
Line of Credit Facility [Line Items]      
Outstanding borrowing under the credit facility   $ 82,000,000 $ 0
Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Remaining borrowing capacity   $ 93,500,000 175,800,000
Maximum leverage ratio   4.0  
Debt covenant, minimum availability required   $ 10,000,000  
Letter of Credit      
Line of Credit Facility [Line Items]      
Remaining borrowing capacity   $ 8,700,000 $ 8,400,000
Minimum | Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Interest coverage rate   3.0  
Line of Credit | Minimum | Base Rate | Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Basis spread on variable rate 1.00%    
Line of Credit | Minimum | London Interbank Offered Rate (LIBOR) | Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Basis spread on variable rate 2.00%    
Line of Credit | Maximum | Base Rate | Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Basis spread on variable rate 1.50%    
Line of Credit | Maximum | London Interbank Offered Rate (LIBOR) | Revolving Credit Facility      
Line of Credit Facility [Line Items]      
Basis spread on variable rate 2.50%