Contract Assets and Liabilities Current and Long-term Contract Liabilities (Details 1) $ in Thousands	Sep. 30, 2020 USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-04-01
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract liability	$ 1,558
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract liability	$ 387
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract liability	$ 0
Revenue, remaining performance obligation, expected timing of satisfaction, period