Consolidated and Combined Statements of Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Cumulative Distributions in Excess of Earnings [Member]	Invested Equity [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning balance at Dec. 31, 2013	$ 162,689	$ 0	$ 0	$ 0	$ 164,517	$ (1,828)
Beginning balance, shares at Dec. 31, 2013		1,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net capital contribution from Ensign	4,356				4,356
Unrealized gain on interest rate swap	167					167
Reclassification adjustment on interest rate swap	1,661					1,661
Net capital distribution to Ensign	(10,475)				(10,475)
Reclassification of invested equity to common stock and additional paid-in capital in conjunction with the Spin-Off	0	$ 222	146,980		(147,202)
Reclassification of invested equity to common stock and additional paid in capital in conjunction with the Spin-Off, shares		22,227,358
Vesting of restricted common stock	0	$ 1	(1)
Vesting of restricted common stock, shares		48,550
Amortization of stock-based compensation	154		154
Special dividend at $5.88 per share	(33,001)	$ 90	98,908	(131,999)
Special dividend, shares		8,974,249
Common dividend ($0.125, $0.64 and $0.68 per share for the years ended 2014, 2015 and 2016, respectively)	(3,946)			(3,946)
Net income (loss)	(8,143)			3,053	(11,196)
Ending balance at Dec. 31, 2014	113,462	$ 313	246,041	(132,892)	0	0
Ending balance, shares at Dec. 31, 2014		31,251,157
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized gain on interest rate swap	0
Reclassification adjustment on interest rate swap	0
Amortization of stock-based compensation	1,522		1,522
Common dividend ($0.125, $0.64 and $0.68 per share for the years ended 2014, 2015 and 2016, respectively)	(25,548)			(25,548)
Issuance of common stock, net	162,963	$ 163	162,800
Issuance of common stock, net (in shares)		16,330,000
Vesting of restricted common stock, net of shares withheld for employee taxes	(145)	$ 1	(146)
Vesting of restricted common stock, net of shares withheld for employee taxes, shares		83,585
Net income (loss)	10,034			10,034
Ending balance at Dec. 31, 2015	262,288	$ 477	410,217	(148,406)	0	0
Ending balance, shares at Dec. 31, 2015		47,664,742
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Unrealized gain on interest rate swap	0
Reclassification adjustment on interest rate swap	0
Amortization of stock-based compensation	1,546		1,546
Common dividend ($0.125, $0.64 and $0.68 per share for the years ended 2014, 2015 and 2016, respectively)	(40,640)			(40,640)
Issuance of common stock, net	200,398	$ 170	200,228
Issuance of common stock, net (in shares)		17,023,824
Vesting of restricted common stock, net of shares withheld for employee taxes	(515)	$ 1	(516)
Vesting of restricted common stock, net of shares withheld for employee taxes, shares		127,784
Net income (loss)	29,353			29,353
Ending balance at Dec. 31, 2016	$ 452,430	$ 648	$ 611,475	$ (159,693)	$ 0	$ 0
Ending balance, shares at Dec. 31, 2016		64,816,350