Commitments and Contingencies (Litigation) (Narrative) (Details) $ in Thousands		1 Months Ended
	Sep. 08, 2016 officer	Dec. 31, 2013 USD ($)	Oct. 31, 2013	Jan. 20, 2015 lawsuit
SDNY Actions [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of claims | lawsuit				10
John Poling Putative Class Action [Member] | Series B Cumulative Preferred [Member] | CapLease [Member]
Loss Contingencies [Line Items]
Preferred stock, dividend rate			8.375%
John Poling Putative Class Action [Member] | Series C Cumulative Preferred Stock [Member] | CapLease [Member]
Loss Contingencies [Line Items]
Preferred stock, dividend rate			7.25%
Putative Class Action [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Stipulation of settlement, maximum attorney fees | $		$ 625
Audit Committee Investigation [Member] | SDNY Actions [Member]
Loss Contingencies [Line Items]
Number of individuals in civil complaint | officer	2