Changes In Accumulated Other Comprehensive Income (Changes In Accumulated Other Comprehensive Income By Component) (Details) (USD $)	3 Months Ended
	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 13,910,000
Other comprehensive (loss) income before reclassification	(442,000)
Amount reclassified from accumulated other comprehensive income	283,000
Net current-period other comprehensive (loss) income	(159,000)
Ending balance	13,751,000
Gains And Losses On Derivatives Fair Value [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	4,279,000	[1]
Other comprehensive (loss) income before reclassification	(467,000)	[1]
Amount reclassified from accumulated other comprehensive income	458,000	[1]
Net current-period other comprehensive (loss) income	(9,000)	[1]
Ending balance	4,270,000	[1]
Unrealized Translation Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	414,000
Other comprehensive (loss) income before reclassification	25,000
Net current-period other comprehensive (loss) income	25,000
Ending balance	439,000
Defined Benefit Pension Items [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	9,217,000
Amount reclassified from accumulated other comprehensive income	(175,000)
Net current-period other comprehensive (loss) income	(175,000)
Ending balance	9,042,000
Oslo Bulk, AS [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest rate swap fair value	$ (588,000)
Ownership percentage (in hundredths)	25.00%

[1] The fair value balance as of March 31, 2014, includes a negative $588,000 balance related to an interest rate swap from our 25% investment in Oslo Bulk AS.