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Debt - $300 Million Term Loan A (Details) - Secured Debt [Member] - USD ($)
1 Months Ended 12 Months Ended
May 11, 2017
May 31, 2017
Dec. 31, 2019
$200 Million Term Loan A [Member]      
Debt Instrument [Line Items]      
Face amount     $ 200,000,000
$300 Million Term Loan A [Member]      
Debt Instrument [Line Items]      
Face amount     $ 300,000,000.0
Debt instrument, maturity date     Mar. 31, 2025
Net proceeds   $ 94,000,000  
$300 Million Term Loan A [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Debt Instrument [Line Items]      
Spread rate (as a percent)     1.50%
$300 Million Term Loan A [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]      
Debt Instrument [Line Items]      
Spread rate (as a percent)     1.35%
$300 Million Term Loan A [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]      
Debt Instrument [Line Items]      
Spread rate (as a percent)     1.90%
$500 Million Term Loan B [Member]      
Debt Instrument [Line Items]      
Face amount     $ 500,000,000
Debt instrument, maturity date     May 11, 2024
Repayments of debt     $ 100,000,000
$500 Million Term Loan B [Member] | London Interbank Offered Rate (LIBOR) [Member]      
Debt Instrument [Line Items]      
Spread rate (as a percent) 2.00%   2.00%