Income Taxes (Details) - USD ($) $ in Millions |
3 Months Ended | |
---|---|---|
Dec. 31, 2021 |
Sep. 30, 2021 |
|
Income Tax Disclosure [Line Items] | ||
Nondeductible executive compensation | $ 1.0 | |
Foreign Tax Authority | ||
Income Tax Disclosure [Line Items] | ||
Net operating loss carryforwards | 3.3 | $ 3.3 |
Foreign Tax Authority | Canadian Tax Authority | ||
Income Tax Disclosure [Line Items] | ||
Total reassessments including interest | 167.0 | |
Amount of security posted in the form of a performance bond | 134.3 | |
Amount of security posted in the form of cash | 38.8 | 38.8 |
State and Local | NOL carryforwards expire beginning in 2027 | ||
Income Tax Disclosure [Line Items] | ||
Net operating loss carryforwards | $ 0.3 | $ 0.3 |