Cash Flow Disclosures And Non Cash Investing And Financing Activities (Non-cash Investing And Financing Activities) (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Non-cash Investing and Financing Activities [Abstract]
Common Shares issued as part of the Dividend Reinvestment Plan	$ 63	$ 47
Assets acquired through joint venture assignment and assumption	49,999
Debt assumed, including premium	44,483	14,750
Deposit paid in prior period towards acquisition which closed in current period		5,000
Conversion of Common Units to Common Shares	392
Issuance of Common Units	4,133
Cash paid for income taxes	757	781
Accrued payables for fixed assets placed into service	$ 1,378	298
Contribution of fixed assets to joint venture		$ 264,658