Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	Oct. 03, 2019	Sep. 30, 2019	Dec. 31, 2018
Commitments and Contingencies
Line of credit, performance and payment bonds		$ 29.2	$ 34.8
Operating Partnership
Commitments and Contingencies
Credit facility, amount outstanding		$ 0.3	$ 2.1
Subsequent Event | Operating Partnership
Commitments and Contingencies
Credit facility, canceled amount	$ 0.3