Quarterly report pursuant to Section 13 or 15(d)

LONG-TERM DEBT - Narrative (Details)

v3.19.2
LONG-TERM DEBT - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Dec. 07, 2012
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Mar. 07, 2018
Mar. 06, 2018
Debt Instrument [Line Items]              
Loss on repurchased debt   $ 13,000 $ 0 $ 13,000 $ (175,000)    
Payments of debt issuance costs       0 1,295,000    
7.750% Senior Notes | Senior Unsecured Notes Due December 15, 2022              
Debt Instrument [Line Items]              
Aggregate principal amount $ 200,000,000.0            
Stated interest rate 7.75%            
Proceeds from issuance of long-term debt $ 191,900,000            
Debt repurchased       700,000      
Payments on long-term debt       700,000      
Debt repurchased, accrued interest       100,000      
Loss on repurchased debt       100,000      
Promissory notes              
Debt Instrument [Line Items]              
Payments on long-term debt       800,000 $ 800,000    
Senior secured revolving credit facility              
Debt Instrument [Line Items]              
Maximum borrowing amount   125,000,000.0   125,000,000.0   $ 125,000,000.0 $ 200,000,000.0
Interest coverage ratio           175.00%  
Senior secured leverage ratio           325.00%  
Increase in commitments due to accordion feature   50,000,000.0   $ 50,000,000.0      
Commitment fee basis point       0.50%      
Letters of credit outstanding   700,000   $ 700,000      
Write off of deferred debt issuance cost       400,000      
Payments of debt issuance costs       $ 1,300,000      
Senior secured revolving credit facility | Minimum              
Debt Instrument [Line Items]              
Commitment fee basis point       0.375%      
Senior secured revolving credit facility | Maximum              
Debt Instrument [Line Items]              
Commitment fee basis point       0.50%      
Senior secured revolving credit facility | Base Rate              
Debt Instrument [Line Items]              
Basis spread on variable rate       1.75%      
Senior secured revolving credit facility | Base Rate | Minimum              
Debt Instrument [Line Items]              
Basis spread on variable rate       1.25%      
Senior secured revolving credit facility | Base Rate | Maximum              
Debt Instrument [Line Items]              
Basis spread on variable rate       2.50%      
Senior secured revolving credit facility | London Interbank Offered Rate (LIBOR)              
Debt Instrument [Line Items]              
Basis spread on variable rate       2.75%      
Senior secured revolving credit facility | London Interbank Offered Rate (LIBOR) | Minimum              
Debt Instrument [Line Items]              
Basis spread on variable rate       2.25%      
Senior secured revolving credit facility | London Interbank Offered Rate (LIBOR) | Maximum              
Debt Instrument [Line Items]              
Basis spread on variable rate       3.50%      
Letter of Credit              
Debt Instrument [Line Items]              
Maximum borrowing amount   $ 50,000,000.0   $ 50,000,000.0      
Tax Disputes | Brazil | Maximum              
Debt Instrument [Line Items]              
Payments on long-term debt       $ 200,000