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CREDIT FACILITY AND ACQUISITION DEBT (Long-term Debt Table) (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Debt Instrument [Line Items]          
Current maturities on long-term debt $ (1,142,000)   $ (1,142,000)   $ (1,306,000)
Long-term debt, excluding current maturities 5,285,000   5,285,000   5,658,000
Revolving credit facility present accordion provisions 75,000,000.0   75,000,000.0    
Convertible Notes amortization of debt issuance costs     393,000 $ 189,000  
Credit Agreement 2018 [Member] | Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Carrying value of the liability component         83,800,000
Convertible Notes amortization of debt issuance costs 118,000 $ 54,000 245,000 108,000  
Credit Agreement [Member]          
Debt Instrument [Line Items]          
Senior Notes interest expense 1,106,000 $ 362,000 2,336,000 $ 740,000  
Credit Agreement [Member] | Revolving Credit Facility [Member]          
Debt Instrument [Line Items]          
Debt issuance costs         (1,618,000)
Credit Agreement [Member] | Term Loan [Member]          
Debt Instrument [Line Items]          
Carrying value of the liability component 88,327,000   88,327,000   82,182,000
Notes Payable, Other Payables [Member] | Acquisition Debt, Deferred Purchase Price [Member]          
Debt Instrument [Line Items]          
Carrying value of the liability component 6,427,000   6,427,000   $ 6,964,000
Revolving Credit Facility [Member] | Credit Agreement [Member]          
Debt Instrument [Line Items]          
Debt issuance costs $ (1,373,000)   $ (1,373,000)