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Debt (Narrative) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2019 USD ($) properties shares number_of_loans $ / shares | Dec. 31, 2018 USD ($) shares | Dec. 31, 2017 USD ($) shares
Debt Leverage Limit, Coupon Change, Trigger | 50.00% |  |
Unsecured Debt |  | $ 400,000,000 |
Convertible Debt | $ 59,697,000 | 118,609,000 |
Unamortized Debt Issuance Expense | 7,076,000 | 9,884,000 |
Debt Instrument, Unamortized Discount | 1,541,000 |  |
Credit Facility, Current Revolving Borrowing Capacity | 550,000,000 |  |
Derivative, Notional Amount | $ 610,000,000 |  |
Debt Instrument, Convertible, Conversion Ratio | 14.62 |  |
Debt Instrument, Convertible, Conversion Price | $ / shares | $ 68.39 |  |
Debt Instrument, Convertible, Number of Equity Instruments | shares | 877,356 |  |
Repayments of Convertible Debt | $ (60,285,000) |  |
Payments for Repurchase of Redeemable Convertible Preferred Stock | 73,102,000 |  |
Convertible Debt, Fair Value Disclosures | 51,002,000 |  |
Loss on extinguishment of debt | $ (823,000) | $ (738,000) | $ (2,214,000)
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities | shares | 210,224 | 80,123 | 189,531
Debt Instrument, Convertible, If-converted Value in Excess of Principal | $ 11,487,000 |  |
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net | 1,710,000 |  |
Derivative, Fair Value, Net | (3,434,000) | $ 1,297,000 |
Gains (Losses) on Restructuring of Debt | $ 0 | $ 0 | $ 583,000
Debt Instrument, Variable Rate Basis, Minimum | 17600.00% | 25200.00% |
Long-term Line of Credit | $ 300,000,000 | $ 84,000,000 |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 2000.00% |  |
Number of Real Estate Properties | properties | 223 |  |
Loss on Cash Flow Hedge Ineffectiveness | $ 0 | 0 | $ (353,000)
$250M Term Loan [Member] |  |  |
Term Loans, Outstanding Balance | 250,000,000 |  |
$300M Term Loan [Member] |  |  |
Term Loans, Outstanding Balance | 300,000,000 |  |
Bank Term Loans [Member] |  |  |
Unsecured Debt | $ 550,000,000 | 550,000,000 |
Debt Instrument, Basis Spread on Variable Rate | 13200.00% |  |
Variable Interest Rate Debt [Member] |  |  |
Long-term Line of Credit | $ 240,000,000 |  |
Private Placement [Member] |  |  |
Unsecured Debt | $ 400,000,000 | 400,000,000 |
Debt Instrument, Name, Revolving Credit Facility [Member] |  |  |
Debt Instrument, Basis Spread on Variable Rate | 12000.00% |  |
Unused balance of the unsecured revolving credit facility | $ 250,000,000 |  |
Debt Instrument, Name, HUD Mortgages [Member] |  |  |
Number of Real Estate Properties | properties | 10 |  |
Net Book Value of Real Estate Pledged Toward Mortgage | $ 49,147,000 |  |
Debt Instrument, HUD Mortgages, 2049 Maturity [Member] |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Number of Loans | number_of_loans | 9 |  |
Debt Instrument, HUD Mortgages, 2047 Maturity [Member] |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Number of Loans | number_of_loans | 1 |  |
Debt Instrument, Name, Fannie Mae Term Loans [Member] |  |  |
Debt Instrument, Term | 10 years |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 78,084,000 |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.79% |  |
Number of Real Estate Properties | 13 |  |
Net Book Value of Real Estate Pledged Toward Mortgage | $ 134,192,000 |  |
FNMA Berkadia Note [Member] |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages | $ 17,622,000 |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.60% |  |
At Inception [Member] |  |  |
Debt Instrument, Convertible, Conversion Ratio | 13.93 |  |
Debt Instrument, Convertible, Conversion Price | $ / shares | $ 71.81 |  |
Debt Instrument, Convertible, Number of Equity Instruments | shares | 2,785,200 |  |
Proceeds from Convertible Debt | $ 200,000,000 |  |
Debt Instrument, Name, Convertible Senior Notes [Member] |  |  |
Debt Instrument, Unamortized Discount | 303,000 | 1,391,000 |
Convertible Debt Instrument, Conversion Ratio, Principal Amount, Basis | 1,000 |  |
Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature | $ 12,816,000 |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.25% |  |
Principal Amount [Member] |  |  |
Convertible Debt | $ 60,000,000 |  |
Debt Instrument, Name, Q3 2014 HUD Mortgages [Member] |  |  |
Debt Instrument, Unamortized Discount | $ 1,238,000 | $ 1,320,000 |
Bickford Senior Living [Member] |  |  |
Number of Real Estate Properties | properties | 47 |  |
Middletown, OH [Member] | Bickford Senior Living [Member] |  |  |
Noncash or Part Noncash Acquisition, Noncash Financial or Equity Instrument Consideration, Rate | 2.90% |  |
Noncash or Part Noncash Acquisition, Debt Assumed | $ 8,492,000 |  |
Noncash or Part Noncash Acquisition, Value of Liabilities Assumed | $ 7,254,000 |  |
Minimum [Member] | Debt Instrument, Name, HUD Mortgages [Member] |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 4.30% |  |
Maximum [Member] | Debt Instrument, Name, HUD Mortgages [Member] |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Interest Rate | 4.40% |  |
November 2025 [Member] |  |  |
Unsecured Debt | $ 50,000,000 |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.33% |  |
Cash Paid [Member] |  |  |
Repayments of Convertible Debt | $ (22,100,000) |  |
Allocated to Debt [Member] |  |  |
Repayments of Convertible Debt | $ (60,000,000) |  |
Common Stock [Member] |  |  |
Stock Issued During Period, Shares, New Issues | shares |  | 1,112,363 | 1,661,161
Convertible Debt [Member] | Common Stock [Member] |  |  |
Stock Issued During Period, Shares, New Issues | shares | 626,397 |  |
Interest Rate Swaps, Maturity Date, After June 2020 [Member] |  |  |
Derivative, Notional Amount | $ 400,000,000 |  |
Interest Rate Swap(s), Date Entered, March & June 2019 [Member] | Bank Term Loans [Member] |  |  |
Derivative, Notional Amount | 340,000,000 |  |
Interest Rate Swap(s), Date Entered, March & June 2019 [Member] | Debt Instrument, Name, Revolving Credit Facility [Member] |  |  |
Derivative, Notional Amount | $ 60,000,000 |  |

X
- Definition Consideration given by issuer of convertible debt to debt holders to convert the debt to equity securities. The amount is equal to the fair value of all securities and other consideration transferred in the transaction. + References No definition available. + Details
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- Definition Convertible Debt Instrument, Conversion Ratio, Principal Amount, Basis + References No definition available. + Details
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- Definition Amount of current revolving borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References No definition available. + Details
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- Definition This item represents the contractual minimum for a variable rate basis such as LIBOR for a debt instrument. + References No definition available. + Details
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- Definition This item represents the debt leverage limit that would trigger an increase in the interest rate to be paid on outstanding debt balances. + References No definition available. + Details
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- Definition This item represents the net book value of real estate pledged toward mortgage. + References No definition available. + Details
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- Definition This concept represents the outstanding balance of term loans. + References No definition available. + Details
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- Definition Amount of contractual principal due at origination of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph Column F -Subsection 29 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Column F)) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Interest rate of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Paragraph Column B -Subsection 29 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Column B)) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Number of mortgage loans within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Footnote 3 -Subsection 29 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29(Footnote 3)) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 + Details
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- Definition Amount of increase (decrease) in additional paid in capital (APIC) resulting from recognition of deferred taxes for convertible debt with a beneficial conversion feature. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 51 -URI http://asc.fasb.org/extlink&oid=117331294&loc=d3e34017-109320 + Details
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- Definition Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock. + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031898-161870 + Details
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- Definition Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 + Details
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- Definition The amount by which the convertible debt's if-converted value exceeds its principle amount at the balance sheet date, regardless of whether the instrument is currently convertible. This element applies to public companies only. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031898-161870 + Details
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- Definition The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21521-112644 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21506-112644 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Period of time between issuance and maturity of debt instrument, 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 Amount, after accumulated amortization, of debt discount. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 + Details
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- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611 + Details
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- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585 + Details
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- Definition For a debtor, the aggregate gain (loss) recognized on the restructuring of payables arises from the difference between the book value of the debt before the restructuring and the fair value of the payments on the debt after restructuring is complete. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 60 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6402221&loc=d3e15743-112638 + Details
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 40 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=117326831&loc=d3e1930-109256 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition The estimated net amount of unrealized gains or losses on interest rate cash flow hedges as of the balance sheet date expected to be reclassified to earnings within the next twelve months. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=112277219&loc=d3e80748-113994 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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