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Fair Value Measurement - Narrative (Details)	3 Months Ended	9 Months Ended
Fair Value Measurement - Narrative (Details)	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2018 USD ($)	May 31, 2019 USD ($) contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount	$ 222,300,000	$ 222,300,000
Nonrecurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charges		0	$ 0
Interest rate contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate collar contracts \| contract				3
Notional amount				$ 222,300,000
Gain (loss) reclassified from accumulated other comprehensive loss	0	0
Gain (loss) recognized in income on the interest rate collars	$ 0	$ 0