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Schedule III Real Estate and Accumulated Depreciation (Parenthetical) (Details) | 12 Months Ended
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Dec. 31, 2017 USD ($) Contract
Real Estate and Accumulated Depreciation [Line Items] |
SEC Schedule III, Real Estate, Federal Income Tax Basis | $ 10,800,000,000
Encumbrance 1 | FNMA |
Real Estate and Accumulated Depreciation [Line Items] |
Secured credit facilities, amount available | 80,000,000
Line of credit facility, amount outstanding | $ 80,000,000
Variable interest rate (percent) | 1.80%
Encumbrance 1 | FNMA | Interest Rate Swap |
Real Estate and Accumulated Depreciation [Line Items] |
Number of Interest rate derivatives held (contracts) | Contract | 1
Variable rate borrowings after interest rate swaps (percent) | 4.50%
Encumbrance 1 | FNMA | Interest Rate Cap |
Real Estate and Accumulated Depreciation [Line Items] |
Derivative, Notional Amount | $ 25,000,000
Encumbrance 2 | Fixed Rate Debt | Loan [Member] |
Real Estate and Accumulated Depreciation [Line Items] |
Amount of bond used as encumbrance | $ 125,200,000.0
Derivative cap interest rate (percent) | 5.08%
Derivative termination date | Jun. 10, 2021
Furniture, fixtures and equipment |
Real Estate and Accumulated Depreciation [Line Items] |
Estimated useful lives (years) | 5 years
Minimum | Land improvements and buildings |
Real Estate and Accumulated Depreciation [Line Items] |
Estimated useful lives (years) | 8 years
Maximum | Land improvements and buildings |
Real Estate and Accumulated Depreciation [Line Items] |
Estimated useful lives (years) | 40 years
Corporate Real Estate Owned | Minimum |
Real Estate and Accumulated Depreciation [Line Items] |
Real Estate and Accumulated Depreciation, Life Used for Depreciation | 1 year
Corporate Real Estate Owned | Maximum |
Real Estate and Accumulated Depreciation [Line Items] |
Real Estate and Accumulated Depreciation, Life Used for Depreciation | 40 years

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- Definition Aggregate notional amount specified by the derivative(s). Expressed as an absolute value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 13 -Sentence Column B + Details
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- Definition Cap rate on an interest rate derivative such as an interest rate cap or collar. If market rates exceed the cap rate, a payment or receipt is triggered on the contract. + References No definition available. + 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://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 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(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 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 Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: 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 2: 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 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 Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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