Quarterly report pursuant to Section 13 or 15(d)

LONG-TERM DEBT AND CAPITAL LEASE - Senior Secured Notes Narrative (Details)

v3.10.0.1
LONG-TERM DEBT AND CAPITAL LEASE - Senior Secured Notes Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Feb. 02, 2018
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Line of Credit Facility [Line Items]            
Outstanding principal   $ 99,500,000   $ 99,500,000   $ 96,063,000
Loss on extinguishment of debt   0 $ 0 2,673,000 $ 0  
Line of Credit | Term Loan            
Line of Credit Facility [Line Items]            
Loss on extinguishment of debt $ 2,700,000          
Line of Credit | First Lien Credit Facility | Term Loan            
Line of Credit Facility [Line Items]            
Outstanding principal 41,000,000 0   0   41,063,000
Line of Credit | Second Lien Term Loan | Term Loan            
Line of Credit Facility [Line Items]            
Outstanding principal 55,000,000 0   0   55,000,000
Senior Secured Notes Due 2024 | Senior Secured Notes            
Line of Credit Facility [Line Items]            
Face amount of senior secured notes $ 100,000,000          
Issue price, percentage 98.00%          
Discount percentage 2.00%          
Outstanding principal   $ 99,500,000   $ 99,500,000   $ 0
Periodic payment of principal $ 250,000          
Balloon payment to be paid $ 94,000,000          
Redemption price, percentage 100.00%          
Senior Secured Notes Due 2024 | Senior Secured Notes | LIBOR            
Line of Credit Facility [Line Items]            
Variable rate floor 1.00%          
Applicable margin rate 7.00%