Legal Proceedings and Other Matters - Additional Information (Details)		1 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended
	Jul. 22, 2020 GBP (£)	Feb. 28, 2017 USD ($)	Jun. 30, 2016 USD ($)	Oct. 31, 2020 USD ($) Well	Nov. 02, 2019 USD ($)	Oct. 31, 2020 USD ($) Well	Nov. 02, 2019 USD ($)	Dec. 31, 2017 USD ($)	Feb. 01, 2020 USD ($)	Apr. 30, 2015 USD ($)
Loss Contingencies [Line Items]
Number of water supply wells | Well				2		2
Amount related to outstanding environmental contingencies				$ 1,400,000	$ 1,700,000	$ 1,400,000	$ 1,700,000		$ 1,500,000
Pretax accrual charges for environmental contingencies included in loss from discontinued operations				0.0	$ 100,000	200,000	$ 500,000
Schuh Limited
Loss Contingencies [Line Items]
Unpaid rent, service charges and insurance sought to recover | £	£ 845,500
Court fees and interest | £	10,000
Remaining claim in dispute | £	£ 406,100
Internal Revenue Service (IRS)
Loss Contingencies [Line Items]
Estimated possible loss								$ 4,200,000
Village of Garden City, New York
Loss Contingencies [Line Items]
Future operation and maintenance costs						126,400
Amount awarded to other party			$ 10,000,000.0
Minimum
Loss Contingencies [Line Items]
Historical cost associated with enhanced treatment required by the impact of groundwater plume						1,800,000
Maximum
Loss Contingencies [Line Items]
Historical cost associated with enhanced treatment required by the impact of groundwater plume						2,500,000
Maximum | Internal Revenue Service (IRS)
Loss Contingencies [Line Items]
Income tax examination settlement, liability				500		500
Environmental Monitoring, Operation and Maintenance Activities | Minimum
Loss Contingencies [Line Items]
Estimated possible loss				1,700,000		1,700,000
Environmental Monitoring, Operation and Maintenance Activities | Maximum
Loss Contingencies [Line Items]
Estimated possible loss				2,000,000.0		2,000,000.0
EPA Interim Oversight Costs
Loss Contingencies [Line Items]
Estimated possible loss				$ 1,250,000		$ 1,250,000
Response Costs Claimed by the EPA
Loss Contingencies [Line Items]
Estimated possible loss										$ 2,200,000
Amount awarded to other party		$ 1,500,000
Estimated recovery percent from settlement		75.00%
Estimated recovery amount from a third party		$ 500,000