Discontinued Operations (Summary Of Held For Sale Assets And Liabilities) (Details) - Discontinued Operations, Held-for-sale [Member] - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts receivable, net of allowance for doubtful accounts	$ 10,815	$ 15,601
Prepaid expenses and other assets	1,693	2,263
Goodwill	15,794	15,794
Intangible assets	3,318	4,123
Loss on classification held for sale	(18,477)
Assets held for sale	13,143	37,781
Accounts payable	2,256	2,757
Accrued expenses and other current liabilities	4,261	5,995
Liabilities held for sale	6,517	8,752
Net assets	$ 6,626	$ 29,029