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Leases, Balance Sheet Information (Details) - USD ($)
Jun. 30, 2019
Mar. 31, 2019
Assets: [Abstract]    
Operating, Operating lease assets $ 50,103,000 $ 0
Finance, Plant and equipment 5,206,000  
Total leased assets 55,309,000  
Current [Abstract]    
Operating, Operating lease liabilities 3,976,000 0
Finance, Other current liabilities 1,855,000  
Long-term [Abstract]    
Operating, Long-term operating lease liabilities 48,155,000 $ 0
Finance, Other liabilities 3,325,000  
Total lease liabilities $ 57,311,000