Summary of Business and Basis for Presentation Development (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			12 Months Ended			3 Months Ended
	Mar. 31, 2014	Mar. 19, 2013 agent	Dec. 31, 2013 EPT Concord II, LLC [Member] acre	Dec. 31, 2013 Trigger One [Member]	Dec. 31, 2013 Trigger Two [Member]	Dec. 31, 2013 Maximum [Member]	Mar. 31, 2014 Architectural Fees [Member]	Mar. 31, 2014 Non Refundable Fees [Member]	Mar. 31, 2014 Shared Development Expenses [Member]
Real Estate Properties [Line Items]
Area of Real Estate Property			1,500
Project Development, Future Minimum Payments Due, By Counterparty	$ 300
Option exercise period end date, extension, period				120 days	60 days	90 days
Estimated Capital Tax Allowable		15
Estimated Tax Credit Allowable Related To Mortgages		1.1
Estimated Real Property Tax Abatement		126
Estimated Tax Abatement Period Of Recognition		16 years
Number Of Agents		3
Project development expenses	16.0
Project Development Costs Incurred	$ 1.6						$ 0.5	$ 0.8	$ 0.4