CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Lease revenue	$ 33,785	$ 29,458	$ 67,450	$ 58,830
Operating costs and expenses
General and administrative expense	4,980	4,728	10,525	53,461
Depreciation	11,410	9,671	22,484	19,179
Total operating costs and expenses	16,390	14,399	33,009	72,640
Income (loss) from operations	17,395	15,059	34,441	(13,810)
Other (expense) income
Interest expense, net	(9,055)	(6,939)	(17,897)	(14,361)
Other income, net	1,137	847	1,896	1,473
Total other expense	(7,918)	(6,092)	(16,001)	(12,888)
Income (loss) before income taxes	9,477	8,967	18,440	(26,698)
Income tax expense	293	124	479	332
Net income (loss)	9,184	8,843	17,961	(27,030)
Less: Net income (loss) attributable to noncontrolling interest	2,576	2,481	5,038	(6,519)
Net income (loss) attributable to InfraREIT, Inc.	$ 6,608	$ 6,362	$ 12,923	$ (20,511)
Net income (loss) attributable to InfraREIT, Inc. common stockholders per share:
Basic	$ 0.15	$ 0.15	$ 0.30	$ (0.48)
Diluted	0.15	0.15	0.30	(0.48)
Cash dividends declared per common share	$ 0.250	$ 0.225	$ 0.500	$ 0.625