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v3.8.0.1

Debt (Narrative) (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2018 USD ($) properties shares | Mar. 31, 2017 USD ($) shares | Dec. 31, 2017 USD ($) properties shares number_of_loans $ / shares | Mar. 31, 2014 USD ($)
Loss on Cash Flow Hedge Ineffectiveness | $ (353,000) |  |  |
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets | 235,000 |  |  |
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net | 775,000 |  |  |
Noncash or Part Noncash Acquisition, Value of Liabilities Assumed | 290,000 | $ 824,000 |  |
Line of Credit Facility, Maximum Borrowing Capacity | 800,000,000 |  |  |
Debt Instrument, Convertible, Conversion Ratio |  |  | 14.28 |
Debt Instrument, Convertible, Conversion Price | $ / shares |  |  | $ 70.01 |
Debt Instrument, Convertible, Carrying Amount of Equity Component | $ 192,238,000 |  |  | $ 7,762,000
Debt Instrument, Convertible, Number of Equity Instruments | shares |  |  | 1,714,100 |
Incremental Common Shares Attributable to Dilutive Effect of Conversion of Debt Securities | shares | 0 | 98,048 |  |
Convertible Debt | $ 118,041,000 |  | $ 144,938,000 |
Debt Instrument, Interest Rate, Effective Percentage |  |  | 3.90% |
Unamortized Debt Issuance Expense |  |  | $ 10,453,000 |
Gain (Loss) on Extinguishment of Debt | $ (738,000) | $ 0 |  |
Debt Instrument, Variable Rate Basis, Minimum | 0.00% |  |  |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 2000.00% |  |  |
Credit Facility, Current Revolving Borrowing Capacity | $ 550,000,000 |  |  |
Number of Real Estate Properties | properties |  |  | 210 |
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value |  |  | $ (588,000) |
Bank Term Loans [Member] |  |  |  |
Term Loans, Outstanding Balance | $ 250,000,000 |  |  |
Debt Instrument, Basis Spread on Variable Rate | 13000.00% |  |  |
Debt Instrument, Name, Convertible Senior Notes [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 3.25% |
Debt Instrument, Face Amount |  |  | $ 120,000,000 |
Convertible Debt Instrument, Conversion Ratio, Principal Amount, Basis | $ 1,000 |  |  |
Payments of Debt Issuance Costs |  |  | 6,063,000 |
Unamortized Debt Issuance Expense |  |  | 1,300,000 |
Payment for Debt Extinguishment or Debt Prepayment Cost | $ 144,938,000 |  | 26,821,000 |
Gain (Loss) on Extinguishment of Debt |  |  | 738,000 |
Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature |  |  | 2,427,000 |
At Inception [Member] |  |  |  |
Proceeds from convertible senior notes |  |  | $ 200,000,000 |
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 |
Debt Instrument, Name, Revolving Credit Facility [Member] |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 11500.00% |  |  |
Unused balance of the unsecured revolving credit facility | $ 288,000,000 |  |  |
FNMA Berkadia Note [Member] |  |  |  |
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate |  |  | 4.60% |
Debt Instrument, Name, Fannie Mae Term Loans [Member] |  |  |  |
Debt Instrument, Term |  |  | 10 years |
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 |  |  | $ 141,189,000 |
Debt Instrument, Name, HUD Mortgages [Member] |  |  |  |
Number of Real Estate Properties | properties |  |  | 10 |
Net Book Value of Real Estate Pledged Toward Mortgage |  |  | $ 52,156,000 |
Debt Instrument, Name, HUD Mortgages [Member] | Minimum [Member] |  |  |  |
Mortgage Loans on Real Estate, Interest Rate |  |  | 4.30% |
Debt Instrument, Name, HUD Mortgages [Member] | Maximum [Member] |  |  |  |
Mortgage Loans on Real Estate, Interest Rate |  |  | 4.40% |
Debt Instrument, HUD Mortgages, 2049 Maturity [Member] |  |  |  |
Mortgage Loans on Real Estate, Number of Loans | number_of_loans |  |  | 9 |
Debt Instrument, HUD Mortgages, 2047 Maturity [Member] |  |  |  |
Mortgage Loans on Real Estate, Number of Loans | number_of_loans |  |  | 1 |
Allocated to Debt [Member] | Debt Instrument, Name, Convertible Senior Notes [Member] |  |  |  |
Payments of Debt Issuance Costs |  |  | $ 5,788,000 |
Allocated to Equity [Member] | Debt Instrument, Name, Convertible Senior Notes [Member] |  |  |  |
Payments of Debt Issuance Costs |  |  | $ 275,000 |
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% |
Fair Value, Inputs, Level 2 [Member] |  |  |  |
Cash Flow Hedge Derivative Instrument Assets at Fair Value | $ 1,332,000 |  | $ 159,000 |
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value | $ 0 |  | (747,000) |
Real Estate Acquisition [Member] | Discovery Senior Living [Member] |  |  |  |
Noncash or Part Noncash Acquisition, Debt Assumed |  |  | 18,311,000 |
Independent Living Facility [Member] | Tulsa, OK [Member] |  |  |  |
SEC Schedule III, Real Estate and Accumulated Depreciation, Amount of Encumbrances |  |  | $ 18,201,000 |

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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 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 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 55 -Paragraph 51 -URI http://asc.fasb.org/extlink&oid=96868398&loc=d3e34017-109320 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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- Definition Fair value of all asset derivatives designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 + Details
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- Definition Fair value of all liability derivatives designated as cash flow hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624163-113959 + 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://www.xbrl.org/2003/role/presentationRef -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 2: http://www.xbrl.org/2003/role/presentationRef -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=6879938&loc=d3e572229-122910 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + 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 carrying amount of the equity component of convertible debt which may be settled in cash upon conversion. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031897-161870 + Details
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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6928298&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21506-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21521-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21506-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21521-112644 + Details
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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(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 Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629 + 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://www.xbrl.org/2003/role/presentationRef -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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 40 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=96947427&loc=d3e1930-109256 + 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80748-113994 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The loss recognized in earnings during the reporting period representing the amount of the cash flow hedges' ineffectiveness. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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- Definition Amount of the contractual principal due at the origination of the mortgage loan (face amount). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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- Definition The stated interest rate on the mortgage loan receivable or the weighted average interest rate on a group of loans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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- Definition Indicates the number of mortgages under each classification. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29.3) -URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 10 -Section S99 -Paragraph 6 -Subparagraph (SX 210.5-04.(c) Schedule IV) -URI http://asc.fasb.org/extlink&oid=27047687&loc=d3e5864-122674 + Details
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