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NOTES PAYABLE AND COMMERCIAL BANK FINANCING - 5.875% Senior Notes, due 2026 (Details) - Senior Notes - 5.875% Senior Notes, due 2026 - USD ($)
Mar. 15, 2021
Aug. 15, 2019
Mar. 15, 2019
Mar. 23, 2016
Sep. 30, 2016
Mar. 31, 2016
Debt Instrument [Line Items]            
Debt issued       $ 350,000,000.0   $ 350,000,000
Interest rate       5.875% 5.875% 5.875%
Percentage of the par value       100.00%    
Deferred financing costs       $ 5,900,000    
Forecast            
Debt Instrument [Line Items]            
Percentage of the par value 100.00% 35.00% 35.00%