Certain Balance Sheet Components - (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Sep. 30, 2021
Property, Plant and Equipment [Line Items]
Gain on insurance recoveries on destroyed property	$ (276,000)
Ola, Arkansas Sawmill [Member]
Property, Plant and Equipment [Line Items]
Gain on insurance recoveries on destroyed property	0
Business interruption recoveries	$ 0
Proceeds From Insurance Recoveries For Property Loss		$ 15,000,000.0