Significant Accounting Policies (Narrative II) (Details)	Jun. 30, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-07-01
Operating Loss Carryforwards [Line Items]
Revenue, Remaining Performance Obligation, Percentage	50.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01
Operating Loss Carryforwards [Line Items]
Revenue, Remaining Performance Obligation, Percentage	30.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	2 years
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01
Operating Loss Carryforwards [Line Items]
Revenue, Remaining Performance Obligation, Percentage	20.00%
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 years