Summarized Condensed Consolidating and Combining Information - Condensed Consolidating and Combining Statements of Cash Flows (Detail) - USD ($) $ in Thousands		9 Months Ended
	Aug. 18, 2015	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities:
Net cash (used in) provided by operating activities		$ 29,035	$ 17,351
Cash flows from investing activities:
Acquisition of real estate		(231,501)	0
Improvements to real estate		(143)	(254)
Purchases of equipment, furniture and fixtures		(256)	(19,079)
Net proceeds from the sale of vacant land		30	0
Distribution from subsidiary		0
Intercompany financing		0	0
Net cash used in investing activities		(231,870)	(19,333)
Cash flows from financing activities:
Proceeds from the issuance of common stock, net	$ 163,700	163,466	0
Proceeds from the issuance of senior unsecured notes payable		0	260,000
Borrowings under unsecured revolving credit facility		45,000	0
Borrowings under senior secured revolving credit facility		35,000	10,000
Proceeds from the issuance of mortgage notes payable		0	50,676
Repayments of borrowings under senior secured revolving credit facility		(35,000)	(88,701)
Payments on the mortgage notes payable		(2,509)	(67,493)
Net-settle adjustment on restricted stock		(145)	0
Payments on senior secured term loan		0	(65,624)
Payments of deferred financing costs		(2,113)	(13,282)
Dividends paid on common stock		(14,086)	0
Net contribution from Ensign		0	4,356
Intercompany financing		0	0
Net cash provided by financing activities		189,613	89,932
Net (decrease) increase in cash and cash equivalents		(13,222)	87,950
Cash and cash equivalents beginning of period		25,320	895
Cash and cash equivalents end of period		12,098	88,845
Reportable Legal Entities [Member] | Parent Guarantor [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities		(239)	0
Cash flows from investing activities:
Acquisition of real estate		0
Improvements to real estate		0	0
Purchases of equipment, furniture and fixtures		0	0
Net proceeds from the sale of vacant land		0
Distribution from subsidiary		14,086
Intercompany financing		(163,082)	0
Net cash used in investing activities		(148,996)	0
Cash flows from financing activities:
Proceeds from the issuance of common stock, net		163,466
Proceeds from the issuance of senior unsecured notes payable			0
Borrowings under unsecured revolving credit facility		0
Borrowings under senior secured revolving credit facility		0	0
Proceeds from the issuance of mortgage notes payable			0
Repayments of borrowings under senior secured revolving credit facility		0	0
Payments on the mortgage notes payable		0	0
Net-settle adjustment on restricted stock		(145)
Payments on senior secured term loan			0
Payments of deferred financing costs		0	0
Dividends paid on common stock		(14,086)
Net contribution from Ensign		0	0
Intercompany financing		0	0
Net cash provided by financing activities		149,235	0
Net (decrease) increase in cash and cash equivalents		0	0
Cash and cash equivalents beginning of period		0	0
Cash and cash equivalents end of period		0	0
Reportable Legal Entities [Member] | Issuers [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities		(7,997)	(12,245)
Cash flows from investing activities:
Acquisition of real estate		(231,501)
Improvements to real estate		(20)	0
Purchases of equipment, furniture and fixtures		(186)	0
Net proceeds from the sale of vacant land		0
Distribution from subsidiary		0
Intercompany financing		34,599	(146,138)
Net cash used in investing activities		(197,108)	(146,138)
Cash flows from financing activities:
Proceeds from the issuance of common stock, net		0
Proceeds from the issuance of senior unsecured notes payable			260,000
Borrowings under unsecured revolving credit facility		45,000
Borrowings under senior secured revolving credit facility		35,000	0
Proceeds from the issuance of mortgage notes payable			0
Repayments of borrowings under senior secured revolving credit facility		(35,000)	0
Payments on the mortgage notes payable		$ 0	0
Net-settle adjustment on restricted stock
Payments on senior secured term loan			0
Payments of deferred financing costs		$ (2,113)	(12,772)
Dividends paid on common stock		0
Net contribution from Ensign		(14,086)	0
Intercompany financing		163,082	0
Net cash provided by financing activities		191,883	247,228
Net (decrease) increase in cash and cash equivalents		(13,222)	88,845
Cash and cash equivalents beginning of period		25,320	0
Cash and cash equivalents end of period		12,098	88,845
Reportable Legal Entities [Member] | Combined Subsidiary Guarantors [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities		33,181	26,839
Cash flows from investing activities:
Acquisition of real estate		0
Improvements to real estate		(123)	(254)
Purchases of equipment, furniture and fixtures		(70)	(14,718)
Net proceeds from the sale of vacant land		30
Distribution from subsidiary		0
Intercompany financing		0	0
Net cash used in investing activities		(163)	(14,972)
Cash flows from financing activities:
Proceeds from the issuance of common stock, net		0
Proceeds from the issuance of senior unsecured notes payable			0
Borrowings under unsecured revolving credit facility		0
Borrowings under senior secured revolving credit facility		0	10,000
Proceeds from the issuance of mortgage notes payable			0
Repayments of borrowings under senior secured revolving credit facility		0	(88,701)
Payments on the mortgage notes payable		$ (558)	(66,880)
Net-settle adjustment on restricted stock
Payments on senior secured term loan			(65,624)
Payments of deferred financing costs		$ 0	0
Dividends paid on common stock		0
Net contribution from Ensign		0	52,385
Intercompany financing		(32,460)	146,058
Net cash provided by financing activities		(33,018)	(12,762)
Net (decrease) increase in cash and cash equivalents		0	(895)
Cash and cash equivalents beginning of period		0	895
Cash and cash equivalents end of period		0	0
Reportable Legal Entities [Member] | Combined Non-Guarantor Subsidiaries [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities		4,090	2,757
Cash flows from investing activities:
Acquisition of real estate		0
Improvements to real estate		0	0
Purchases of equipment, furniture and fixtures		0	(4,361)
Net proceeds from the sale of vacant land		0
Distribution from subsidiary		0
Intercompany financing		0	0
Net cash used in investing activities		0	(4,361)
Cash flows from financing activities:
Proceeds from the issuance of common stock, net		0
Proceeds from the issuance of senior unsecured notes payable			0
Borrowings under unsecured revolving credit facility		0
Borrowings under senior secured revolving credit facility		0	0
Proceeds from the issuance of mortgage notes payable			50,676
Repayments of borrowings under senior secured revolving credit facility		0	0
Payments on the mortgage notes payable		$ (1,951)	(613)
Net-settle adjustment on restricted stock
Payments on senior secured term loan			0
Payments of deferred financing costs		$ 0	(510)
Dividends paid on common stock		0
Net contribution from Ensign		0	(48,029)
Intercompany financing		(2,139)	80
Net cash provided by financing activities		(4,090)	1,604
Net (decrease) increase in cash and cash equivalents		0	0
Cash and cash equivalents beginning of period		0	0
Cash and cash equivalents end of period		0	0
Elimination [Member]
Cash flows from operating activities:
Net cash (used in) provided by operating activities		0	0
Cash flows from investing activities:
Acquisition of real estate		0
Improvements to real estate		0	0
Purchases of equipment, furniture and fixtures		0	0
Net proceeds from the sale of vacant land		0
Distribution from subsidiary		(14,086)
Intercompany financing		128,483	146,138
Net cash used in investing activities		114,397	146,138
Cash flows from financing activities:
Proceeds from the issuance of common stock, net		0
Proceeds from the issuance of senior unsecured notes payable			0
Borrowings under unsecured revolving credit facility		0
Borrowings under senior secured revolving credit facility		0	0
Proceeds from the issuance of mortgage notes payable			0
Repayments of borrowings under senior secured revolving credit facility		0	0
Payments on the mortgage notes payable		$ 0	0
Net-settle adjustment on restricted stock
Payments on senior secured term loan			0
Payments of deferred financing costs		$ 0	0
Dividends paid on common stock		0
Net contribution from Ensign		14,086	0
Intercompany financing		(128,483)	(146,138)
Net cash provided by financing activities		(114,397)	(146,138)
Net (decrease) increase in cash and cash equivalents		0	0
Cash and cash equivalents beginning of period		0	0
Cash and cash equivalents end of period		$ 0	$ 0