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Real Estate (Narrative) (Details) | 1 Months Ended | 3 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jan. 31, 2018 USD ($) | Mar. 31, 2018 USD ($) properties beds_or_units renewalOptions Master_Leases shares | Mar. 31, 2017 USD ($) | Jan. 12, 2018 beds_or_units | Dec. 31, 2017 USD ($) properties | Sep. 30, 2017 USD ($)
Number of Real Estate Properties | properties |  |  |  |  | 210 |
Number of States in which Entity Operates |  |  |  |  | 32 |
Nonportfolio Assets, Original Cost |  |  |  |  | $ 1,298,000 |
Real Estate Investment Property, Portfolio Assets |  |  |  |  |  | $ 2,682,387,000
Number of Lessees |  |  |  |  | 27 |
Payments to Acquire Real Estate |  | $ 14,404,000 | $ 118,011,000 |  |  |
Lessee Payment To Acquire Purchase Option |  | 1,275,000 | 1,250,000 |  |  |
Operating Leases, Income Statement, Lease Revenue |  | 69,253,000 | 63,127,000 |  |  |
Deferred Rent Receivables, Net |  | 102,046,000 |  |  | $ 97,359,000 |
Straight Line Rent |  | 5,962,000 | 5,755,000 |  |  |
Real Estate Properties, Commitment To Purchase, Amount |  | $ 47,017,000 |  |  |  |
Holiday Acquisition Holdings [Member] |  |  |  |  |  |
Number of Real Estate Properties | properties |  | 25 |  |  |  |
Lessor, Operating Lease, Term of Contract |  | 17 years |  |  |  |
Lease Escalator Rate, After Lease Year 3 |  | 3.50% |  |  |  |
Operating Leases, Income Statement, Lease Revenue |  | $ 10,954,000 | $ 10,954,000 |  |  |
Percentage of Continuing Revenue |  | 15.00% | 17.00% |  |  |
Straight Line Rent |  | $ 1,530,000 | $ 1,849,000 |  |  |
National Healthcare Corporation [Member] |  |  |  |  |  |
Number of Real Estate Properties | properties |  | 42 |  |  |  |
Number of Master Leases | Master_Leases |  | 2 |  |  |  |
Operating Leases, Income Statement, Lease Revenue |  | $ 9,674,000 | $ 9,513,000 |  |  |
Percentage of Continuing Revenue |  | 13.00% | 14.00% |  |  |
Lessor Equity Shares Owned, Significant Lessee | shares |  | 1,630,462 |  |  |  |
National Healthcare Corporation [Member] | NHC - 1991 Lease [Member] |  |  |  |  |  |
Number of Real Estate Properties | properties |  | 35 |  |  |  |
Number Of Additional Lease Renewal Options | renewalOptions |  | 2 |  |  |  |
Lease Renewal Period In Years |  | 5 years |  |  |  |
Percentage Rent Rate |  | 0.04 |  |  |  |
Minimum Annual Lease Income |  | $ 30,750,000 |  |  |  |
National Healthcare Corporation [Member] | NHC - 2013 Lease [Member] |  |  |  |  |  |
Number Of Real Estate Properties Acquired | properties |  | 7 |  |  |  |
Percentage Rent Rate |  | 0.04 |  |  |  |
Minimum Annual Lease Income |  | $ 3,450,000 |  |  |  |
Purchase Option Amount |  | $ 49,000,000 |  |  |  |
Bickford Senior Living [Member] |  |  |  |  |  |
Number of Real Estate Properties | properties |  | 47 |  |  |  |
Operating Leases, Income Statement, Lease Revenue |  | $ 11,445,000 | $ 9,373,000 |  |  |
Percentage of Continuing Revenue |  | 16.00% | 14.00% |  |  |
Straight Line Rent |  | $ 1,169,000 | $ 910,000 |  |  |
Minimum Annual Lease Income |  | $ 41,942,000 |  |  |  |
Senior Living Communities [Member] |  |  |  |  |  |
Number of Real Estate Properties | properties |  | 9 |  |  |  |
Number of Units in Real Estate Property |  | 1,970 |  |  |  |
Lessor, Operating Lease, Term of Contract |  | 15 years |  |  |  |
Lease Escalator Rate Lease Year 2 to Lease Year 4 |  | 4.00% |  |  |  |
Lease Escalator Rate after Lease Year 4 |  | 3.00% |  |  |  |
Operating Leases, Income Statement, Lease Revenue |  | $ 11,449,000 | $ 11,431,000 |  |  |
Percentage of Continuing Revenue |  | 16.00% | 17.00% |  |  |
Straight Line Rent |  | $ 1,359,000 | $ 1,746,000 |  |  |
Number Of Additional Lease Renewal Options |  | 2 |  |  |  |
Lease Renewal Period In Years |  | 5 years |  |  |  |
Ensign Group [Member] |  |  |  |  |  |
Real Estate Properties, Commitment To Purchase | properties |  | 2 |  |  |  |
Default Tenant [Member] |  |  |  |  |  |
Percentage of Continuing Revenue |  | 4.00% |  |  |  |
Deferred Rent Receivables, Net |  | $ 3,773,000 |  |  |  |
Senior Housing Community [Member] |  |  |  |  |  |
Number of Real Estate Properties | properties |  |  |  |  | 136 |
Skilled Nursing Facility [Member] |  |  |  |  |  |
Number of Real Estate Properties | properties |  |  |  |  | 69 |
Skilled Nursing Facility [Member] | National Healthcare Corporation [Member] |  |  |  |  |  |
Number of Real Estate Properties | properties |  | 39 |  |  |  |
Skilled Nursing Facility [Member] | National Healthcare Corporation [Member] | Subleased Facilities [Member] |  |  |  |  |  |
Number of Real Estate Properties | properties |  | 4 |  |  |  |
Hospital [Member] |  |  |  |  |  |
Number of Real Estate Properties | properties |  |  |  |  | 3 |
Medical Office Building [Member] |  |  |  |  |  |
Number of Real Estate Properties | properties |  |  |  |  | 2 |
Independent Living Facility [Member] | National Healthcare Corporation [Member] |  |  |  |  |  |
Number of Real Estate Properties | properties |  | 3 |  |  |  |
Ensign Waxahachie Purchase [Member] |  |  |  |  |  |
Number of Units in Real Estate Property | beds_or_units |  |  |  | 121 |  |
Payments to Acquire Real Estate | $ 14,404,000 |  |  |  |  |
Lessee Payment To Acquire Purchase Option | $ 1,275,000 |  |  |  |  |
Lessor, Operating Lease, Term of Contract | 13 years |  |  |  |  |
Initial lease rate |  |  |  | 8.20% |  |

X
- Definition The initial rate charged under a lease entered into in connection with the purchase of a property. + References No definition available. + Details
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- Definition The initial escalator rate charged from lease year 3 through the end of the lease term under a lease entered into in connection with the purchase of a property. + References No definition available. + Details
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- Definition The initial lease escalator rate charged from lease year 2 through lease year 4 under a lease entered into in connection with the purchase of a property. + References No definition available. + Details
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- Definition The initial lease escalator to be charged starting after lease year 4 under a lease entered into in connection with the purchase of a property. + References No definition available. + Details
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- Definition This item represents a lessee's payment to acquire a purchase option. + References No definition available. + Details
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- Definition This item represents the number of shares of a lessor that are owned by a significant lessee as of the end of the reporting period. + References No definition available. + Details
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- Definition This element represents the minimum annual lease income to be received. + References No definition available. + Details
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- Definition This item represents the original cost of corporate assets that are not part of the investment portfolio. + References No definition available. + Details
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- Definition Number Of Additional Lease Renewal Options + References No definition available. + Details
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- Definition The number of lessees of real estate property at the end of the period. + References No definition available. + Details
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- Definition Number of Master Leases + References No definition available. + Details
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- Definition This element represents the percentage of income recognized from a lease tenant. + References No definition available. + Details
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- Definition This element represents the rental revenue rate earned during the period from lessee-operators based on revenues generated in their operations, generally in excess of a base amount. Generally stipulated in the lease agreement, it usually will provide for a fixed percentage of revenue to be paid as additional (or possibly only) rent due the lessor, and may be based on gross revenues, net revenues, or multiple variations thereof. + References No definition available. + Details
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- Definition This item represents the amount of an outstanding purchase option. + References No definition available. + Details
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- Definition The element represents the original cost of all portfolio leased assets. + References No definition available. + Details
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- Definition This item represents the number of real estate properties for which the entity has made a binding commitment to purchase. + References No definition available. + Details
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- Definition This item represents the purchase commitment for real estate properties which the entity has entered into a binding agreement to acquire. + References No definition available. + Details
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- Definition The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property, by the lessor or lessee, respectively. Such receivable is reduced by allowances attributable to, for instance, credit risk associated with a lessee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77913719&loc=d3e40879-112712 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=77902458&loc=d3e39927-112707 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902458&loc=d3e39896-112707 + Details
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- Definition Term of the lessor's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Term of the lessor's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
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- Definition The number of states the entity operates in as of the balance sheet date. + References No definition available. + Details
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- Definition The number of units in a real estate property owned as of the balance sheet date. + References No definition available. + Details
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- Definition The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=77902458&loc=d3e39896-112707 + Details
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- Definition The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
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- Definition Difference between actual rental income due and rental income recognized on a straight-line basis. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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