Long-Term Debt (Schedule Of Long-Term Debt And Weighted Average Interest) (Details) - USD ($) $ in Thousands		Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total principal		$ 203,995	$ 188,961
Deferred financing costs		(9,846)	(9,998)
Total long-term debt		194,149	178,963
Less current portion		(20,354)	(3,157)
Long-term portion		173,795	175,806
Credit Agreement - Macquarie [Member]
Debt Instrument [Line Items]
Total principal		$ 179,100	$ 170,000
Weighted-average interest rate		7.56%	7.22%
Credit Agreements - CPL [Member]
Debt Instrument [Line Items]
Total principal		$ 1,583	$ 1,966
Weighted-average interest rate		3.14%	3.13%
UniCredit Loan [Member]
Debt Instrument [Line Items]
Total principal	[1]	$ 1,606	$ 1,983
Weighted-average interest rate	[1]	2.29%	2.47%
UniCredit Agreement [Member]
Debt Instrument [Line Items]
Total principal		$ 7,400
Weighted-average interest rate		2.60%
Financing Obligation - CDR Land Lease [Member]
Debt Instrument [Line Items]
Total principal		$ 14,306	$ 15,012
Weighted-average interest rate		13.09%	14.88%
Total Principal [Member]
Debt Instrument [Line Items]
Weighted-average interest rate		7.74%	7.06%

[1] CRM assumed the UniCredit loan to CCB in February 2020.