CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Lease revenue	$ 41,452	$ 39,309	$ 100,282	$ 89,371
Operating costs and expenses
General and administrative expense	5,504	6,143	58,965	12,839
Depreciation	10,259	8,998	29,438	25,825
Total operating costs and expenses	15,763	15,141	88,403	38,664
Income from operations	25,689	24,168	11,879	50,707
Other (expense) income
Interest expense, net	(6,723)	(8,699)	(21,084)	(24,364)
Other income, net	707	294	2,180	333
Total other expense	(6,016)	(8,405)	(18,904)	(24,031)
Income (loss) before income taxes	19,673	15,763	(7,025)	26,676
Income tax expense	243	248	575	656
Net income (loss)	19,430	15,515	(7,600)	26,020
Less: Net income (loss) attributable to noncontrolling interest	5,458	3,621	(1,061)	6,046
Net income (loss) attributable to InfraREIT, Inc.	$ 13,972	$ 11,894	$ (6,539)	$ 19,974
Net income (loss) attributable to InfraREIT, Inc. common shareholders per share:
Basic	$ 0.32	$ 0.34	$ (0.15)	$ 0.57
Diluted	0.32	$ 0.34	(0.15)	$ 0.57
Cash dividends declared per common share	$ 0.225		$ 0.850