SCHEDULE I - CONDENSED FINANCIAL INFORMATION (Details 4) - USD ($)	Dec. 31, 2019	Jan. 31, 2019	Jan. 30, 2019	Jul. 31, 2015
Line of Credit Facility [Line Items]
Cap on dividends paid and shares and warrants that can be repurchased per fiscal year under restrictive covenants	$ 12,000,000.0
Schedule of principal repayments under the Term Loan
2020	4,675,000
2021	401,950,000
Term Loan
Line of Credit Facility [Line Items]
Face amount	425,000,000.0			$ 425,000,000.0
Maximum borrowing available		$ 12,500,000	$ 25,000,000.0
Revolving loan
Line of Credit Facility [Line Items]
Face amount	25,000,000.0
Maximum borrowing available		$ 12,500,000
Letter-of-credit sub-facility
Line of Credit Facility [Line Items]
Face amount	10,000,000.0
Maximum borrowing available				$ 10,000,000
Credit Facility
Schedule of principal repayments under the Term Loan
2020	4,700,000
2021	$ 402,000,000.0