Subsequent Events (Schedule Of Minimum Adjusted EBITDA) (Details) - Subsequent Event [Member] $ in Thousands	Jul. 08, 2020 USD ($)
August 31, 2020 [Member]
Subsequent Event [Line Items]
Minimum Adjusted EBITDA	$ 11,000
November 30, 2020 [Member]
Subsequent Event [Line Items]
Minimum Adjusted EBITDA	8,500
February 28, 2021 [Member]
Subsequent Event [Line Items]
Minimum Adjusted EBITDA	5,000
May 31, 2021 [Member]
Subsequent Event [Line Items]
Minimum Adjusted EBITDA	$ 15,000