Revenue Recognition - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Contract assets	$ 15,701		$ 23,998
Contract liabilities	$ 21,138		$ 19,752
Revenue Benchmark \| Product Concentration Risk \| Transferred over Time
Disaggregation of Revenue [Line Items]
Concentration risk, percentage	13.00%	7.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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