Long-Term Incentive Plan Units (Narrative) (Details) (USD $)	12 Months Ended			76 Months Ended	4 Months Ended	76 Months Ended	0 Months Ended	12 Months Ended	76 Months Ended	0 Months Ended	12 Months Ended	76 Months Ended	12 Months Ended			76 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	Dec. 31, 2007 Manager [Member] Long-Term Incentive Plan Units [Member]	Dec. 31, 2013 Manager [Member] Long-Term Incentive Plan Units [Member]	Sep. 11, 2013 Director [Member] Long-Term Incentive Plan Units [Member]	Dec. 31, 2013 Director [Member] Long-Term Incentive Plan Units [Member]	Dec. 31, 2013 Director [Member] Long-Term Incentive Plan Units [Member]	Dec. 12, 2013 Partially dedicated personnel [Member] Long-Term Incentive Plan Units [Member]	Dec. 31, 2013 Partially dedicated personnel [Member] Long-Term Incentive Plan Units [Member]	Dec. 31, 2013 Partially dedicated personnel [Member] Long-Term Incentive Plan Units [Member]	Dec. 31, 2013 Non-Manager [Member] Long-Term Incentive Plan Units [Member]	Dec. 31, 2012 Non-Manager [Member] Long-Term Incentive Plan Units [Member]	Dec. 31, 2011 Non-Manager [Member] Long-Term Incentive Plan Units [Member]	Dec. 31, 2013 Non-Manager [Member] Long-Term Incentive Plan Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
LTIP units granted					375,000		5,466		29,562	10,272		18,272
Aggregate expense associated with Manager LTIP, Since inception						$ 8,600,000
Vesting period								1 year			2 years
Allocated Share-based Compensation Expense	179,000	135,000	147,000										179,000	135,000	147,000	700,000
LTIPs converted since inception				11,782
Amount transferred from share-based LTIP awards to Shareholders Equity				$ 200,000