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Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jan. 17, 2020
Nov. 28, 2018
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2018
Finite-Lived Intangible Assets [Line Items]              
Document Period End Date         Jun. 30, 2020    
Repayments of debt             $ 104,936
Write off of Deferred Debt Issuance Cost         $ 1,795 $ 0  
Payments of Financing Costs         760    
Amortization of debt issuance costs and discounts     $ 277 $ 498 1,213 1,481  
Foreign currency losses (gains) on intracompany loans     (3,833) (772) (2,662) 4,636  
Research and development costs     2,782 3,281 $ 9,655 11,384  
Minimum              
Finite-Lived Intangible Assets [Line Items]              
Finite-lived intangible asset, useful life         1 year    
Maximum              
Finite-Lived Intangible Assets [Line Items]              
Finite-lived intangible asset, useful life         26 years    
Machinery and equipment | Minimum              
Finite-Lived Intangible Assets [Line Items]              
Property, plant and equipment, useful life         3 years    
Machinery and equipment | Maximum              
Finite-Lived Intangible Assets [Line Items]              
Property, plant and equipment, useful life         20 years    
Building and Building Improvements | Minimum              
Finite-Lived Intangible Assets [Line Items]              
Property, plant and equipment, useful life         10 years    
Building and Building Improvements | Maximum              
Finite-Lived Intangible Assets [Line Items]              
Property, plant and equipment, useful life         40 years    
Interest Rate Cap              
Finite-Lived Intangible Assets [Line Items]              
Cash paid for interest rate cap   $ 2,235          
Derivative, Term of Contract   3 years          
Amortization     $ 124 $ 187 $ 496 $ 435  
Write off of Deferred Debt Issuance Cost         $ 1,118    
Memcor [Member] | First Lien Term Facility, due December 20, 2024              
Finite-Lived Intangible Assets [Line Items]              
Repayments of debt $ 100,000