Noncontrolling Interest - Additional Information (Details) (USD $)	3 Months Ended		0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 09, 2015	Dec. 31, 2014
Minority Interest [Line Items]
Description of units redeemed for cash or, at option, exchanged for common shares	one-for-one basis
OP Units held by the limited partners	17,000,000			10,700,000
Operating partnership units redeem	0	0
General and Administrative Expense
Minority Interest [Line Items]
Compensation Expenses	100,000	0
LTIP Units
Minority Interest [Line Items]
Operating partnership units issued	28,000	0
Directors vesting period	1 year
Hunt-InfraREIT
Minority Interest [Line Items]
Common shares received			2,329,283
Class A OP Units
Minority Interest [Line Items]
Shares purchased consideration for promissory note	6,242,999
Principal amount of shares purchased consideration for promissory note	66,500,000
Class A OP Units | Hunt-InfraREIT
Minority Interest [Line Items]
Operating partnership units redeem	1,551,878
Common shares received	1,551,878