Summarized Condensed Consolidating and Combining Information - Condensed Consolidating and Combining Statements of Cash Flows (Detail) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net cash provided by (used in) provided by operating activities	$ 15,586	$ 7,553
Cash flows from investing activities:
Acquisition of real estate	(33,646)	0
Improvements to real estate	(143)	0
Purchases of equipment, furniture, and fixtures	(227)	(19,009)
Escrow deposit for acquisition of real estate	(1,500)	0
Distribution from subsidiary	0
Intercompany financing	0	0
Net cash used in investing activities	(35,516)	(19,009)
Cash flows from financing activities:
Proceeds from the issuance of senior unsecured notes payable	0	260,000
Proceeds from the senior secured revolving credit facility	35,000	10,000
Proceeds from the issuance of mortgage notes payable	0	50,676
Payments on the senior secured revolving credit facility	0	(88,701)
Payments on the mortgage notes payable	(1,351)	(66,856)
Payments on senior secured term loan	0	(65,624)
Payments of deferred financing costs	(139)	(12,945)
Dividends paid on common stock	(8,996)	0
Net contribution from Ensign	0	4,356
Distributions to Issuers		0
Intercompany financing	0	0
Net cash provided by financing activities	24,514	90,906
Net increase in cash and cash equivalents	4,584	79,450
Cash and cash equivalents beginning of period	25,320	895
Cash and cash equivalents end of period	29,904	80,345
Reportable Legal Entities [Member] | Parent Guarantor [Member]
Cash flows from operating activities:
Net cash provided by (used in) provided by operating activities	(149)	0
Cash flows from investing activities:
Acquisition of real estate	0
Improvements to real estate	0
Purchases of equipment, furniture, and fixtures	0	0
Escrow deposit for acquisition of real estate	0
Distribution from subsidiary	8,996
Intercompany financing	149	0
Net cash used in investing activities	9,145	0
Cash flows from financing activities:
Proceeds from the issuance of senior unsecured notes payable		0
Proceeds from the senior secured revolving credit facility	0	0
Proceeds from the issuance of mortgage notes payable		0
Payments on the senior secured revolving credit facility		0
Payments on the mortgage notes payable	0	0
Payments on senior secured term loan		0
Payments of deferred financing costs	0	0
Dividends paid on common stock	(8,996)
Net contribution from Ensign	0	0
Distributions to Issuers		0
Intercompany financing	0	0
Net cash provided by financing activities	(8,996)	0
Net 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 provided by (used in) provided by operating activities	(8,782)	(1,492)
Cash flows from investing activities:
Acquisition of real estate	(33,646)
Improvements to real estate	(20)
Purchases of equipment, furniture, and fixtures	(167)	0
Escrow deposit for acquisition of real estate	(1,500)
Distribution from subsidiary	0
Intercompany financing	22,983	(165,728)
Net cash used in investing activities	(12,350)	(165,728)
Cash flows from financing activities:
Proceeds from the issuance of senior unsecured notes payable		260,000
Proceeds from the senior secured revolving credit facility	35,000	0
Proceeds from the issuance of mortgage notes payable		0
Payments on the senior secured revolving credit facility		0
Payments on the mortgage notes payable	0	0
Payments on senior secured term loan		0
Payments of deferred financing costs	(139)	(12,435)
Dividends paid on common stock	0
Net contribution from Ensign	(8,996)	0
Distributions to Issuers		0
Intercompany financing	(149)	0
Net cash provided by financing activities	25,716	247,565
Net increase in cash and cash equivalents	4,584	80,345
Cash and cash equivalents beginning of period	25,320	0
Cash and cash equivalents end of period	29,904	80,345
Reportable Legal Entities [Member] | Combined Subsidiary Guarantors [Member]
Cash flows from operating activities:
Net cash provided by (used in) provided by operating activities	21,801	15,394
Cash flows from investing activities:
Acquisition of real estate	0
Improvements to real estate	(123)
Purchases of equipment, furniture, and fixtures	(60)	(14,648)
Escrow deposit for acquisition of real estate	0
Distribution from subsidiary	0
Intercompany financing	0	0
Net cash used in investing activities	(183)	(14,648)
Cash flows from financing activities:
Proceeds from the issuance of senior unsecured notes payable		0
Proceeds from the senior secured revolving credit facility	0	10,000
Proceeds from the issuance of mortgage notes payable		0
Payments on the senior secured revolving credit facility		(88,701)
Payments on the mortgage notes payable	(50)	(66,856)
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
Distributions to Issuers		(7,912)
Intercompany financing	(21,568)	165,067
Net cash provided by financing activities	(21,618)	(1,641)
Net 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 provided by (used in) provided by operating activities	2,716	1,563
Cash flows from investing activities:
Acquisition of real estate	0
Improvements to real estate	0
Purchases of equipment, furniture, and fixtures	0	(4,361)
Escrow deposit for acquisition of real estate	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 senior unsecured notes payable		0
Proceeds from the senior secured revolving credit facility	0	0
Proceeds from the issuance of mortgage notes payable		50,676
Payments on the senior secured revolving credit facility		0
Payments on the mortgage notes payable	(1,301)	0
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)
Distributions to Issuers		0
Intercompany financing	(1,415)	661
Net cash provided by financing activities	(2,716)	2,798
Net 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 provided by (used in) provided by operating activities	0	(7,912)
Cash flows from investing activities:
Acquisition of real estate	0
Improvements to real estate	0
Purchases of equipment, furniture, and fixtures	0	0
Escrow deposit for acquisition of real estate	0
Distribution from subsidiary	(8,996)
Intercompany financing	(23,132)	165,728
Net cash used in investing activities	(32,128)	165,728
Cash flows from financing activities:
Proceeds from the issuance of senior unsecured notes payable		0
Proceeds from the senior secured revolving credit facility	0	0
Proceeds from the issuance of mortgage notes payable		0
Payments on the senior secured revolving credit facility		0
Payments on the mortgage notes payable	0	0
Payments on senior secured term loan		0
Payments of deferred financing costs	0	0
Dividends paid on common stock	0
Net contribution from Ensign	8,996	0
Distributions to Issuers		7,912
Intercompany financing	23,132	(165,728)
Net cash provided by financing activities	32,128	(157,816)
Net 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