CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Lease revenue	$ 39,624	$ 33,665
Operating costs and expenses
General and administrative expense	5,981	5,545
Depreciation	12,687	11,074
Total operating costs and expenses	18,668	16,619
Income from operations	20,956	17,046
Other (expense) income
Interest expense, net	(9,698)	(8,842)
Other income, net	3	759
Total other expense	(9,695)	(8,083)
Income before income taxes	11,261	8,963
Income tax expense	244	186
Net income	11,017	8,777
Less: Net income attributable to noncontrolling interest	3,068	2,462
Net income attributable to InfraREIT, Inc.	$ 7,949	$ 6,315
Net income attributable to InfraREIT, Inc. common stockholders per share:
Basic	$ 0.18	$ 0.14
Diluted	0.18	0.14
Cash dividends declared per common share	$ 0.25	$ 0.25