Derivatives - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Sep. 30, 2015 USD ($)	Jan. 31, 2014 USD ($)
2014 Swaps
Derivative [Line Items]
Swaps, Number of Instruments Held			4
Derivative, Notional Amount			$ 200,000
Debt instrument, LIBOR Rate	one-month LIBOR
Swaps, Average Fixed Interest Rate			2.29%
2015 Swaps
Derivative [Line Items]
Swaps, Number of Instruments Held		6
Derivative, Notional Amount		$ 260,000
Debt instrument, LIBOR Rate	one-month LIBOR
Swaps, Average Fixed Interest Rate		1.79%
2021 Swaps
Derivative [Line Items]
Swaps, Number of Instruments Held	3
Derivative, Notional Amount	$ 200,000
Debt instrument, LIBOR Rate	one-month LIBOR
Swaps, Average Fixed Interest Rate	0.99%
2020 Swap
Derivative [Line Items]
Derivative, Notional Amount	$ 150,000
Debt instrument, LIBOR Rate	one-month LIBOR
Swaps, Average Fixed Interest Rate	0.42%