CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Lease revenue	$ 48,574	$ 45,656
Operating costs and expenses
General and administrative expense	7,087	6,088
Depreciation	12,204	11,577
Total operating costs and expenses	19,291	17,665
Income from operations	29,283	27,991
Other (expense) income
Interest expense, net	(10,060)	(10,674)
Other income, net	1	733
Total other expense	(10,059)	(9,941)
Income before income taxes	19,224	18,050
Income tax expense	255	286
Net income	18,969	17,764
Less: Net income attributable to noncontrolling interest	5,224	4,900
Net income attributable to InfraREIT, Inc.	$ 13,745	$ 12,864
Net income attributable to InfraREIT, Inc. common stockholders per share:
Basic	$ 0.31	$ 0.29
Diluted	0.31	0.29
Cash dividends declared per common share	$ 0.25	$ 0.25