CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Lease revenue	$ 151,203	$ 134,415	$ 73,193
Operating costs and expenses
General and administrative expense	64,606	18,625	13,691
Depreciation	40,211	35,080	20,024
Total operating costs and expenses	104,817	53,705	33,715
Income from operations	46,386	80,710	39,478
Other (expense) income
Interest expense, net	(28,554)	(32,741)	(17,384)
Other income (expense), net	3,048	(17,236)	20,932
Total other (expense) income	(25,506)	(49,977)	3,548
Income before income taxes	20,880	30,733	43,026
Income tax expense	949	953	616
Net income	19,931	29,780	42,410
Less: Net income attributable to noncontrolling interest	6,664	6,882	10,288
Net income attributable to InfraREIT, Inc.	$ 13,267	$ 22,898	$ 32,122
Net income attributable to InfraREIT, Inc. common stockholders per share:
Basic	$ 0.31	$ 0.65	$ 1.07
Diluted	0.31	0.65	$ 1.07
Cash dividends declared per common share	$ 1.075	$ 0.310