Future Minimum Rental Income (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014		Dec. 31, 2013
Future Minimum Rental Income [Abstract]
Real estate revenue	$ 15,042	$ 16,887	[1]	$ 18,803	[1]

[1] Certain prior period amounts have been reclassified to conform to the current period presentation (see Note 2 - Significant Accounting Policies - Reclassifications).