$NHI
National Health Investors Inc Stock $nhi

$nhi Overview Financials Valuation SEC Filings Company Website

2017 Q4 Form 10-K Financial Statement

#000087786018000013 Filed on February 16, 2018

Income Statement

Concept	2017 Q4	2016 Q4	2016 Q3
Revenue	$71.08M	$64.99M	$63.25M
YoY Change	9.38%	10.82%	8.53%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$3.310M	$2.750M	$2.600M
YoY Change	20.36%	-15.9%	28.71%
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$17.20M	$15.80M	$15.24M
YoY Change	8.86%	15.33%	13.01%
% of Gross Profit
Operating Expenses	$20.47M	$18.61M	$29.78M
YoY Change	9.99%	9.92%	17.82%
Operating Profit			$33.47M
YoY Change
Interest Expense	-$11.19M	-$5.180M	$10.82M
YoY Change	116.02%	-141.88%	10.68%
% of Operating Profit			32.32%
Other Income/Expense, Net		$0.00	-$930.0K
YoY Change		-100.0%	-1030.0%
Pretax Income	$37.80M	$41.19M	$33.47M
YoY Change	-8.23%	-24.82%	1.6%
Income Tax
% Of Pretax Income
Net Earnings	$37.80M	$41.19M	$33.03M
YoY Change	-8.23%	-24.28%	-1.69%
Net Earnings / Revenue	53.17%	63.38%	52.22%
Basic Earnings Per Share	$0.91	$1.03	$0.84
Diluted Earnings Per Share	$0.90	$1.03	$0.83
COMMON SHARES
Basic Shares Outstanding	41.53M shares	39.85M shares	39.28M shares
Diluted Shares Outstanding	41.80M shares	39.99M shares	39.65M shares

Balance Sheet

Concept	2017 Q4	2016 Q4	2016 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$3.063M	$16.58M	$28.07M
YoY Change	-81.52%	-33.25%	-43.12%
Cash & Equivalents	$3.063M	$4.832M	$4.197M
Short-Term Investments	$0.00	$11.75M	$23.87M
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables	$2.429M	$9.212M	$4.100M
Other Receivables	$97.30M	$72.50M	$66.90M
Total Short-Term Assets	$105.6M	$86.30M	$75.20M
YoY Change	22.36%	13.11%	3.72%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.286B	$2.160B	$2.096B
YoY Change	5.83%	17.58%	13.74%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$0.00	$0.00	$0.00
YoY Change		-100.0%	-100.0%
Other Assets	$4.800M	$4.000M	$8.300M
YoY Change	20.0%	-33.33%	50.91%
Total Long-Term Assets	$2.440B	$2.317B	$2.313B
YoY Change	5.3%	12.66%	12.23%
TOTAL ASSETS
Total Short-Term Assets	$105.6M	$86.30M	$75.20M
Total Long-Term Assets	$2.440B	$2.317B	$2.313B
Total Assets	$2.546B	$2.404B	$2.388B
YoY Change	5.92%	12.68%	11.94%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$17.50M	$20.00M	$36.10M
YoY Change	-12.5%	3.09%	81.41%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$78.20M	$77.20M	$93.20M
YoY Change	1.3%	5.32%	27.5%
LONG-TERM LIABILITIES
Long-Term Debt	$1.146B	$1.116B	$1.086B
YoY Change	2.64%	22.05%	7.62%
Other Long-Term Liabilities		$900.0K	$1.500M
YoY Change		-70.0%	-75.81%
Total Long-Term Liabilities	$1.146B	$1.117B	$1.088B
YoY Change	2.56%	21.75%	7.11%
TOTAL LIABILITIES
Total Short-Term Liabilities	$78.20M	$77.20M	$93.20M
Total Long-Term Liabilities	$1.146B	$1.117B	$1.088B
Total Liabilities	$1.224B	$1.194B	$1.181B
YoY Change	2.48%	20.52%	8.48%
SHAREHOLDERS EQUITY
Retained Earnings		$29.87M
YoY Change		50.4%
Common Stock	$1.290B	$1.174B	$1.174B
YoY Change	9.91%	8.15%	13.33%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.322B	$1.210B	$1.207B
YoY Change
Total Liabilities & Shareholders Equity	$2.546B	$2.404B	$2.388B
YoY Change	5.92%	12.68%	11.94%

Cashflow Statement

Concept	2017 Q4	2016 Q4	2016 Q3
OPERATING ACTIVITIES
Net Income	$37.80M	$41.19M	$33.03M
YoY Change	-8.23%	-24.28%	-1.69%
Depreciation, Depletion And Amortization	$17.20M	$15.80M	$15.24M
YoY Change	8.86%	15.33%	13.01%
Cash From Operating Activities	$52.10M	$47.30M	$46.10M
YoY Change	10.15%	8.49%	12.99%
INVESTING ACTIVITIES
Capital Expenditures	-$23.90M	-$70.30M	-$27.40M
YoY Change	-66.0%	3095.45%	-72.82%
Acquisitions
YoY Change
Other Investing Activities	$5.000M	$40.60M	-$42.30M
YoY Change	-87.68%	64.37%	238.4%
Cash From Investing Activities	-$19.00M	-$29.60M	-$69.70M
YoY Change	-35.81%	-232.14%	-38.43%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-33.10M	-17.60M	23.90M
YoY Change	88.07%	-73.73%	-71.34%
NET CHANGE
Cash From Operating Activities	52.10M	47.30M	46.10M
Cash From Investing Activities	-19.00M	-29.60M	-69.70M
Cash From Financing Activities	-33.10M	-17.60M	23.90M
Net Change In Cash	-0.000000007451	100.0K	300.0K
YoY Change	-100.0%	-110.0%	-97.27%
FREE CASH FLOW
Cash From Operating Activities	$52.10M	$47.30M	$46.10M
Capital Expenditures	-$23.90M	-$70.30M	-$27.40M
Free Cash Flow	$76.00M	$117.6M	$73.50M
YoY Change	-35.37%	156.77%	-48.09%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2017	dei	Amendment Flag AmendmentFlag	false
CY2017	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2017	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2017	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
CY2017	dei	Document Period End Date DocumentPeriodEndDate	2017-12-31
CY2017	dei	Document Type DocumentType	10-K
CY2017	dei	Entity Central Index Key EntityCentralIndexKey	0000877860
CY2018Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	41532154	shares
CY2017	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2017	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2017Q2	dei	Entity Public Float EntityPublicFloat	3117380000	USD
CY2017	dei	Entity Registrant Name EntityRegistrantName	NATIONAL HEALTH INVESTORS INC
CY2017	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2017	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2015	nhi	Additions Through Assumption Of Debt AdditionsThroughAssumptionOfDebt	0	USD
CY2015	nhi	Amortization Of Financing Costs Exclusive Of Amounts Written Off AmortizationOfFinancingCostsExclusiveOfAmountsWrittenOff	4497000	USD
CY2016	nhi	Amortization Of Financing Costs Exclusive Of Amounts Written Off AmortizationOfFinancingCostsExclusiveOfAmountsWrittenOff	3928000	USD
CY2017	nhi	Amortization Of Financing Costs Exclusive Of Amounts Written Off AmortizationOfFinancingCostsExclusiveOfAmountsWrittenOff	2627000	USD
CY2015	nhi	Cash Paid In Settlement Of Contingent Purchase Consideration Liability CashPaidInSettlementOfContingentPurchaseConsiderationLiability	0	USD
CY2016	nhi	Cash Paid In Settlement Of Contingent Purchase Consideration Liability CashPaidInSettlementOfContingentPurchaseConsiderationLiability	8208000	USD
CY2017	nhi	Cash Paid In Settlement Of Contingent Purchase Consideration Liability CashPaidInSettlementOfContingentPurchaseConsiderationLiability	0	USD
CY2015	nhi	Change In Accounts Payable Real Property Additions ChangeInAccountsPayableRealPropertyAdditions	1076000	USD
CY2016	nhi	Additions Through Assumption Of Debt AdditionsThroughAssumptionOfDebt	0	USD
CY2017	nhi	Additions Through Assumption Of Debt AdditionsThroughAssumptionOfDebt	18311000	USD
CY2015	nhi	Additions Through Contingent Liabilities AdditionsThroughContingentLiabilities	-2250000	USD
CY2016	nhi	Additions Through Contingent Liabilities AdditionsThroughContingentLiabilities	0	USD
CY2017	nhi	Additions Through Contingent Liabilities AdditionsThroughContingentLiabilities	0	USD
CY2015	nhi	Additions Through Reclassificationof Deposit AdditionsThroughReclassificationofDeposit	0	USD
CY2016	nhi	Additions Through Reclassificationof Deposit AdditionsThroughReclassificationofDeposit	227000	USD
CY2017	nhi	Additions Through Reclassificationof Deposit AdditionsThroughReclassificationofDeposit	0	USD
CY2015	nhi	Additions Through Settlement Of Mortgage Note AdditionsThroughSettlementOfMortgageNote	255000	USD
CY2016	nhi	Additions Through Settlement Of Mortgage Note AdditionsThroughSettlementOfMortgageNote	9753000	USD
CY2017	nhi	Additions Through Settlement Of Mortgage Note AdditionsThroughSettlementOfMortgageNote	0	USD
CY2015	nhi	Aggregate Intrinsic Value Per Share Optionsexercised AggregateIntrinsicValuePerShareOptionsexercised	12.69
CY2016	nhi	Aggregate Intrinsic Value Per Share Optionsexercised AggregateIntrinsicValuePerShareOptionsexercised	7.06
CY2017	nhi	Aggregate Intrinsic Value Per Share Optionsexercised AggregateIntrinsicValuePerShareOptionsexercised	13.55
CY2016	nhi	Change In Accounts Payable Real Property Additions ChangeInAccountsPayableRealPropertyAdditions	-430000	USD
CY2017	nhi	Change In Accounts Payable Real Property Additions ChangeInAccountsPayableRealPropertyAdditions	-1855000	USD
CY2015	nhi	Common Stock Dividends Per Share Declared Regular CommonStockDividendsPerShareDeclaredRegular	3.40
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CY2017	nhi	Common Stock Dividends Per Share Declared Regular CommonStockDividendsPerShareDeclaredRegular	3.80
CY2017	nhi	Common Stock Ownership Limit CommonStockOwnershipLimit	0.099
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CY2017Q4	nhi	Contingent Funding Commitment Remaining Unfunded Amount ContingentFundingCommitmentRemainingUnfundedAmount	30600000	USD
CY2017	nhi	Convertible Debt Instrument Conversion Ratio Principal Amount Basis ConvertibleDebtInstrumentConversionRatioPrincipalAmountBasis	1000	USD
CY2017Q4	nhi	Credit Facility Current Revolving Borrowing Capacity CreditFacilityCurrentRevolvingBorrowingCapacity	550000000	USD
	nhi	Debt Instrument Variable Rate Basis Minimum DebtInstrumentVariableRateBasisMinimum	0.00
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CY2017	nhi	Entity Incorporate Date Of Incorporation Year EntityIncorporateDateOfIncorporationYear	1991
CY2017	nhi	Equity Issuance Costs EquityIssuanceCosts	-571000	USD
CY2017	nhi	Excepted Holder Agreement Common Stock Ownership Limit ExceptedHolderAgreementCommonStockOwnershipLimit	0.075
CY2015	nhi	Franchise Excise And Other Taxes FranchiseExciseAndOtherTaxes	985000	USD
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CY2017	nhi	Franchise Excise And Other Taxes FranchiseExciseAndOtherTaxes	960000	USD
CY2015	nhi	Lessee Payment To Acquire Purchase Option LesseePaymentToAcquirePurchaseOption	0	USD
CY2016	nhi	Lessee Payment To Acquire Purchase Option LesseePaymentToAcquirePurchaseOption	0	USD
CY2017	nhi	Lessee Payment To Acquire Purchase Option LesseePaymentToAcquirePurchaseOption	1250000	USD
CY2015	nhi	Loanand Lease Lossesand Recoveries Net LoanandLeaseLossesandRecoveriesNet	-491000	USD
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CY2017	nhi	Loanand Lease Lossesand Recoveries Net LoanandLeaseLossesandRecoveriesNet	0	USD
CY2017	nhi	Loanand Lease Lossesand Recoveries Net LoanandLeaseLossesandRecoveriesNet	0	USD
CY2017Q4	nhi	Maximum Commitment For All Active Development Projects MaximumCommitmentForAllActiveDevelopmentProjects	88380000	USD
CY2017Q4	nhi	Maximum Numberof Equity Owners Closely Held Designation MaximumNumberofEquityOwnersCloselyHeldDesignation	100
CY2015	nhi	Mortgage Loans On Real Estate Total Additions MortgageLoansOnRealEstateTotalAdditions	83747000	USD
CY2016	nhi	Mortgage Loans On Real Estate Total Additions MortgageLoansOnRealEstateTotalAdditions	67115000	USD
CY2017	nhi	Mortgage Loans On Real Estate Total Additions MortgageLoansOnRealEstateTotalAdditions	34828000	USD
CY2015	nhi	Mortgage Loans On Real Estate Total Deductions MortgageLoansOnRealEstateTotalDeductions	17473000	USD
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CY2017	nhi	Mortgage Loans On Real Estate Total Deductions MortgageLoansOnRealEstateTotalDeductions	35897000	USD
CY2017	nhi	Nonemployeedirectorannualstockgrants Nonemployeedirectorannualstockgrants	20000	shares
CY2017Q4	nhi	Nonportfolio Assets Original Cost NonportfolioAssetsOriginalCost	1298000	USD
CY2017Q4	nhi	Notes Receivable Funding Commitment NotesReceivableFundingCommitment	33204000	USD
CY2017Q4	nhi	Number Of Health Care Properties Related To Mortgage Notes Receivables NumberOfHealthCarePropertiesRelatedToMortgageNotesReceivables	9	properties
CY2017Q4	nhi	Number Of Lessees NumberOfLessees	27
CY2017Q4	nhi	Real Estate Investment Property Portfolio Assets RealEstateInvestmentPropertyPortfolioAssets	2664605000	USD
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CY2015	nhi	Unsettled Marketable Securities Sales Transactions UnsettledMarketableSecuritiesSalesTransactions	0	USD
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CY2017	nhi	Unsettled Marketable Securities Sales Transactions UnsettledMarketableSecuritiesSalesTransactions	0	USD
CY2015	nhi	Writeoffof Unamortized Debt Premium WriteoffofUnamortizedDebtPremium	18000	USD
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CY2017	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	0	USD
CY2016Q4	us-gaap	Convertible Debt ConvertibleDebt	195283000	USD
CY2017Q4	us-gaap	Convertible Debt ConvertibleDebt	144938000	USD
CY2016Q4	us-gaap	Cumulative Earnings Deficit CumulativeEarningsDeficit	29873000	USD
CY2017Q4	us-gaap	Cumulative Earnings Deficit CumulativeEarningsDeficit	32605000	USD
CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	42000	USD
CY2017Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1159989000	USD
CY2014Q1	us-gaap	Debt Instrument Convertible Carrying Amount Of The Equity Component DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent	7762000	USD
CY2017Q4	us-gaap	Debt Instrument Convertible Conversion Price1 DebtInstrumentConvertibleConversionPrice1	70.25
CY2017	us-gaap	Debt Instrument Convertible Conversion Ratio1 DebtInstrumentConvertibleConversionRatio1	14.23
CY2017	us-gaap	Debt Instrument Convertible If Converted Value In Excess Of Principal DebtInstrumentConvertibleIfConvertedValueInExcessOfPrincipal	10776000	USD
CY2017	us-gaap	Debt Instrument Convertible Number Of Equity Instruments DebtInstrumentConvertibleNumberOfEquityInstruments	2100700	shares
CY2017Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.039
CY2017Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	4039000	USD
CY2016Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	1115981000	USD
CY2017Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	1145497000	USD
CY2016Q4	us-gaap	Deferred Costs And Other Assets DeferredCostsAndOtherAssets	33212000	USD
CY2017Q4	us-gaap	Deferred Costs And Other Assets DeferredCostsAndOtherAssets	18212000	USD
CY2016Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	72518000	USD
CY2017Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	97359000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	433000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	334000	USD
CY2015	us-gaap	Depreciation Depreciation	53123000	USD
CY2016	us-gaap	Depreciation Depreciation	59525000	USD
CY2017	us-gaap	Depreciation Depreciation	67173000	USD
CY2015	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	128431000	USD
CY2016	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	141529000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	156633000	USD
CY2016Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	35863000	USD
CY2017Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	39456000	USD
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.96
CY2016Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.85
CY2016Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.16
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.84
CY2016Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.03
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.88
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.11
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.93
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.95
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.91
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.90
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.95
CY2016Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.85
CY2016Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.03
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.87
CY2016Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.16
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.83
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.10
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.93
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.94
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.90
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.87
CY2017Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	617000	USD
CY2016Q3	us-gaap	Equity Method Investment Ownership Percentage EquityMethodInvestmentOwnershipPercentage	0.85
CY2015	us-gaap	Equity Method Investment Sold Carrying Amount EquityMethodInvestmentSoldCarryingAmount	0	USD
CY2016	us-gaap	Equity Method Investment Sold Carrying Amount EquityMethodInvestmentSoldCarryingAmount	8100000	USD
CY2017	us-gaap	Equity Method Investment Sold Carrying Amount EquityMethodInvestmentSoldCarryingAmount	0	USD
CY2016Q4	us-gaap	Escrow Deposit EscrowDeposit	4047000	USD
CY2017Q4	us-gaap	Escrow Deposit EscrowDeposit	4817000	USD
CY2015	us-gaap	Escrow Deposit Disbursements Related To Property Acquisition1 EscrowDepositDisbursementsRelatedToPropertyAcquisition1	0	USD
CY2016	us-gaap	Escrow Deposit Disbursements Related To Property Acquisition1 EscrowDepositDisbursementsRelatedToPropertyAcquisition1	227000	USD
CY2017	us-gaap	Escrow Deposit Disbursements Related To Property Acquisition1 EscrowDepositDisbursementsRelatedToPropertyAcquisition1	0	USD
CY2015	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	1126000	USD
CY2016	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	4582000	USD
CY2017	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	50000	USD
CY2015	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2016	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-2214000	USD
CY2015	us-gaap	Gains Losses On Restructuring Of Debt GainsLossesOnRestructuringOfDebt	0	USD
CY2016	us-gaap	Gains Losses On Restructuring Of Debt GainsLossesOnRestructuringOfDebt	0	USD
CY2017	us-gaap	Gains Losses On Restructuring Of Debt GainsLossesOnRestructuringOfDebt	-583000	USD
CY2015	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	1126000	USD
CY2016	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	4582000	USD
CY2017	us-gaap	Gains Losses On Sales Of Investment Real Estate GainsLossesOnSalesOfInvestmentRealEstate	50000	USD
CY2015	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	10519000	USD
CY2016	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	9773000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	12217000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	126719000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	118767000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	151491000	USD
CY2015	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-1767000	USD
CY2016	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-1214000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2015	us-gaap	Income Loss From Subsidiaries Tax Expense Benefit IncomeLossFromSubsidiariesTaxExpenseBenefit	-707000	USD
CY2016	us-gaap	Income Loss From Subsidiaries Tax Expense Benefit IncomeLossFromSubsidiariesTaxExpenseBenefit	749000	USD
CY2017	us-gaap	Income Loss From Subsidiaries Tax Expense Benefit IncomeLossFromSubsidiariesTaxExpenseBenefit	0	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-583000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	854000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	124000	USD
CY2015	us-gaap	Income Taxes Paid IncomeTaxesPaid	122000	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	30000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	170000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	1038000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	2764000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	1607000	USD
CY2015	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	2501000	USD
CY2016	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-1385000	USD
CY2017	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	304000	USD
CY2015	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-216000	USD
CY2016	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1018000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	4372000	USD
CY2015	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	4735	shares
CY2016	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	89471	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Conversion Of Debt Securities IncrementalCommonSharesAttributableToConversionOfDebtSecurities	189531	shares
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	34842	shares
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	52497	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	67703	shares
CY2015	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	357000	USD
CY2016	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	549000	USD
CY2017	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	510000	USD
CY2015	us-gaap	Interest Expense InterestExpense	37629000	USD
CY2016	us-gaap	Interest Expense InterestExpense	43108000	USD
CY2017	us-gaap	Interest Expense InterestExpense	46324000	USD
CY2015	us-gaap	Interest Expense Debt Excluding Amortization InterestExpenseDebtExcludingAmortization	30094000	USD
CY2016	us-gaap	Interest Expense Debt Excluding Amortization InterestExpenseDebtExcludingAmortization	36197000	USD
CY2017	us-gaap	Interest Expense Debt Excluding Amortization InterestExpenseDebtExcludingAmortization	40385000	USD
CY2015	us-gaap	Interest Income Operating InterestIncomeOperating	10206000	USD
CY2016	us-gaap	Interest Income Operating InterestIncomeOperating	13805000	USD
CY2017	us-gaap	Interest Income Operating InterestIncomeOperating	13134000	USD
CY2015	us-gaap	Interest Paid InterestPaid	31289000	USD
CY2016	us-gaap	Interest Paid InterestPaid	39539000	USD
CY2017	us-gaap	Interest Paid InterestPaid	45405000	USD
CY2017Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	775000	USD
CY2016Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	2285122000	USD
CY2017Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	2471602000	USD
CY2015	us-gaap	Investment Income Net InvestmentIncomeNet	4335000	USD
CY2016	us-gaap	Investment Income Net InvestmentIncomeNet	2302000	USD
CY2017	us-gaap	Investment Income Net InvestmentIncomeNet	398000	USD
CY2016Q4	us-gaap	Land Land	172003000	USD
CY2017Q4	us-gaap	Land Land	191623000	USD
CY2015	us-gaap	Legal Fees LegalFees	464000	USD
CY2016	us-gaap	Legal Fees LegalFees	422000	USD
CY2017	us-gaap	Legal Fees LegalFees	494000	USD
CY2016Q4	us-gaap	Liabilities Liabilities	1194043000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	1223704000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2403633000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2545821000	USD
CY2016Q4	us-gaap	Line Of Credit LineOfCredit	158000000	USD
CY2017Q4	us-gaap	Line Of Credit LineOfCredit	221000000	USD
CY2015	us-gaap	Line Of Credit Facility Increase Decrease For Period Net LineOfCreditFacilityIncreaseDecreaseForPeriodNet	340000000	USD
CY2016	us-gaap	Line Of Credit Facility Increase Decrease For Period Net LineOfCreditFacilityIncreaseDecreaseForPeriodNet	-124000000	USD
CY2017	us-gaap	Line Of Credit Facility Increase Decrease For Period Net LineOfCreditFacilityIncreaseDecreaseForPeriodNet	-63000000	USD
CY2017Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	800000000	USD
CY2017	us-gaap	Line Of Credit Facility Unused Capacity Commitment Fee Percentage LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage	20
CY2017	us-gaap	Loans And Leases Receivable Commitments Fixed Rates LoansAndLeasesReceivableCommitmentsFixedRates	103000000	USD
CY2016Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	133493000	USD
CY2017Q4	us-gaap	Loans And Leases Receivable Net Reported Amount LoansAndLeasesReceivableNetReportedAmount	141486000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Rolling Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextRollingTwelveMonths	1144000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingAfterYearFive	535245000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFive	472328000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearFour	148854000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearThree	1230000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Rolling Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInRollingYearTwo	1188000	USD
CY2016Q4	us-gaap	Marketable Securities MarketableSecurities	11745000	USD
CY2017Q4	us-gaap	Marketable Securities MarketableSecurities	0	USD
CY2015	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	23529000	USD
CY2016	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	29673000	USD
CY2017	us-gaap	Marketable Securities Realized Gain Loss MarketableSecuritiesRealizedGainLoss	10038000	USD
CY2015	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2292000	USD
CY2016	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	1565000	USD
CY2016	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	-25100000	USD
CY2014Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	34850000	USD
CY2015Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	101124000	USD
CY2016Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	99179000	USD
CY2017Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	98110000	USD
CY2017Q4	us-gaap	Mortgage Loans On Real Estate Carrying Amount Of Mortgages MortgageLoansOnRealEstateCarryingAmountOfMortgages	98110000	USD
CY2015	us-gaap	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	15928000	USD
CY2016	us-gaap	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	69060000	USD
CY2017	us-gaap	Mortgage Loans On Real Estate Collections Of Principal MortgageLoansOnRealEstateCollectionsOfPrincipal	35897000	USD
CY2015	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	83411000	USD
CY2016	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	66446000	USD
CY2017	us-gaap	Mortgage Loans On Real Estate New Mortgage Loans MortgageLoansOnRealEstateNewMortgageLoans	33823000	USD
CY2017Q4	us-gaap	Mortgage Loans On Real Estate Principal Amount Of Delinquent Loans MortgageLoansOnRealEstatePrincipalAmountOfDelinquentLoans	0	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-18100000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	144165000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-35052000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-136326000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-329838000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-163846000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	164425000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	177219000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	197325000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	148862000	USD
CY2016Q1	us-gaap	Net Income Loss NetIncomeLoss	32725000	USD
CY2017	us-gaap	Other Nonoperating Gains Losses OtherNonoperatingGainsLosses	0	USD
CY2016	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	59607000	USD
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	44595000	USD
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	33032000	USD
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	41188000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	21687000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-22179000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-6553000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	23529000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	29673000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	10038000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-4498000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	151540000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	44230000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	38245000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	39092000	USD
CY2017Q4	us-gaap	Net Income Loss NetIncomeLoss	37798000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	159365000	USD
CY2015	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1452000	USD
CY2016	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	1176000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	0	USD
CY2015	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	1076000	USD
CY2016	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	430000	USD
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Value Of Liabilities Assumed1 NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1	1855000	USD
CY2017Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	209	properties
CY2017Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	32
CY2015	us-gaap	Operating Expenses OperatingExpenses	102229000	USD
CY2016	us-gaap	Operating Expenses OperatingExpenses	129693000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	127168000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	2981752000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	245167000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	251312000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	248414000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	246497000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	248297000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	1742065000	USD
CY2015	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	214407000	USD
CY2016	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	232353000	USD
CY2017	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	265127000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-3928000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-2627000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-6062000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-1506000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	884000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	46780000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	5072000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-26000	USD
CY2015	us-gaap	Other Noncash Income OtherNoncashIncome	411000	USD
CY2016	us-gaap	Other Noncash Income OtherNoncashIncome	1021000	USD
CY2017	us-gaap	Other Noncash Income OtherNoncashIncome	792000	USD
CY2015	us-gaap	Other Nonoperating Gains Losses OtherNonoperatingGainsLosses	0	USD
CY2016	us-gaap	Other Nonoperating Gains Losses OtherNonoperatingGainsLosses	1657000	USD
CY2015	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	24655000	USD
CY2016	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	35912000	USD
CY2017	us-gaap	Other Nonoperating Income OtherNonoperatingIncome	10088000	USD
CY2016	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	0	USD
CY2015	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	3000000	USD
CY2017	us-gaap	Payments To Acquire Mortgage Notes Receivable PaymentsToAcquireMortgageNotesReceivable	49853000	USD
CY2017	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	0	USD
CY2015	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	3157000	USD
CY2016	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	3378000	USD
CY2017	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	7888000	USD
CY2015	us-gaap	Payments For Delayed Tax Exempt Exchange PaymentsForDelayedTaxExemptExchange	0	USD
CY2016	us-gaap	Payments For Delayed Tax Exempt Exchange PaymentsForDelayedTaxExemptExchange	0	USD
CY2017	us-gaap	Payments For Delayed Tax Exempt Exchange PaymentsForDelayedTaxExemptExchange	1250000	USD
CY2015	us-gaap	Payments For Repurchase Of Redeemable Convertible Preferred Stock PaymentsForRepurchaseOfRedeemableConvertiblePreferredStock	0	USD
CY2016	us-gaap	Payments For Repurchase Of Redeemable Convertible Preferred Stock PaymentsForRepurchaseOfRedeemableConvertiblePreferredStock	0	USD
CY2017	us-gaap	Payments For Repurchase Of Redeemable Convertible Preferred Stock PaymentsForRepurchaseOfRedeemableConvertiblePreferredStock	60921000	USD
CY2015	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	2608000	USD
CY2016	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	258000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	4935000	USD
CY2015	us-gaap	Payments Of Dividends PaymentsOfDividends	124657000	USD
CY2016	us-gaap	Payments Of Dividends PaymentsOfDividends	138303000	USD
CY2017	us-gaap	Payments Of Dividends PaymentsOfDividends	153040000	USD
CY2015	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	275000	USD
CY2015	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	0	USD
CY2016	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1133000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	571000	USD
CY2015	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2016	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	6400000	USD
CY2017	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2015	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	0	USD
CY2016	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	17000000	USD
CY2017	us-gaap	Payments To Acquire Interest In Joint Venture PaymentsToAcquireInterestInJointVenture	0	USD
CY2015	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	8458000	USD
CY2016	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
CY2017	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	0	USD
CY2015	us-gaap	Payments To Acquire Mortgage Notes Receivable PaymentsToAcquireMortgageNotesReceivable	92249000	USD
CY2016	us-gaap	Payments To Acquire Mortgage Notes Receivable PaymentsToAcquireMortgageNotesReceivable	92051000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	124113000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	394737000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	175793000	USD
CY2015	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	106315000	USD
CY2016	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	359257000	USD
CY2017	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	157214000	USD
CY2015	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	14641000	USD
CY2016	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	32102000	USD
CY2017	us-gaap	Payments To Develop Real Estate Assets PaymentsToDevelopRealEstateAssets	10691000	USD
CY2015	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	2292000	USD
CY2016	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	1565000	USD
CY2017	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	0	USD
CY2015	us-gaap	Proceeds From Bank Debt ProceedsFromBankDebt	325000000	USD
CY2016	us-gaap	Proceeds From Bank Debt ProceedsFromBankDebt	75000000	USD
CY2017	us-gaap	Proceeds From Bank Debt ProceedsFromBankDebt	250000000	USD
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	49114000	USD
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	104190000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	122237000	USD
CY2015	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	78084000	USD
CY2016	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2015	us-gaap	Proceeds From Sale And Collection Of Mortgage Notes Receivable ProceedsFromSaleAndCollectionOfMortgageNotesReceivable	21495000	USD
CY2016	us-gaap	Proceeds From Sale And Collection Of Mortgage Notes Receivable ProceedsFromSaleAndCollectionOfMortgageNotesReceivable	84228000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	18182000	USD
CY2017	us-gaap	Proceeds From Sale And Collection Of Mortgage Notes Receivable ProceedsFromSaleAndCollectionOfMortgageNotesReceivable	43168000	USD
CY2015	us-gaap	Proceeds From Sale And Maturity Of Marketable Securities ProceedsFromSaleAndMaturityOfMarketableSecurities	57406000	USD
CY2015	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	9593000	USD
CY2016	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	27723000	USD
CY2017	us-gaap	Proceeds From Sale Of Other Real Estate ProceedsFromSaleOfOtherRealEstate	450000	USD
CY2015	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1000	USD
CY2016Q2	us-gaap	Revenues Revenues	61204000	USD
CY2016	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	1000	USD
CY2017	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	0	USD
CY2015	us-gaap	Profit Loss ProfitLoss	150314000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	152716000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	159365000	USD
CY2017	us-gaap	Property Plant And Equipment Useful Life PropertyPlantAndEquipmentUsefulLife	P40Y0M0D
CY2014Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	212300000	USD
CY2015Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	259059000	USD
CY2016Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	313080000	USD
CY2017Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	380202000	USD
CY2015	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	1268000	USD
CY2016	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	0	USD
CY2017	us-gaap	Real Estate Accumulated Depreciation Other Deductions RealEstateAccumulatedDepreciationOtherDeductions	0	USD
CY2015	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	5096000	USD
CY2016	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	5504000	USD
CY2017	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	51000	USD
CY2015	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	13563000	USD
CY2016	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	27299000	USD
CY2017	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	450000	USD
CY2017Q4	us-gaap	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	2280260000	USD
CY2014Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	1988849000	USD
CY2015Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2095866000	USD
CY2016Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2472854000	USD
CY2017Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2665903000	USD
CY2016Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	313080000	USD
CY2017Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	380202000	USD
CY2016Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	2472854000	USD
CY2017Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	2665903000	USD
CY2016Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	2159774000	USD
CY2017Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	2285701000	USD
CY2015	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	2614000	USD
CY2016	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	0	USD
CY2017	us-gaap	Real Estate Other Deductions RealEstateOtherDeductions	0	USD
CY2016Q1	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	1665000	USD
CY2016Q2	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	26415000	USD
CY2016Q3	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	1657000	USD
CY2016Q4	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	6175000	USD
CY2017Q1	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	10088000	USD
CY2017Q2	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	0	USD
CY2017Q3	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	0	USD
CY2017Q4	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	0	USD
CY2015	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	742000	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	767000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	250822000	USD
CY2015	us-gaap	Revenues Revenues	228948000	USD
CY2016Q3	us-gaap	Revenues Revenues	63251000	USD
CY2016Q4	us-gaap	Revenues Revenues	64987000	USD
CY2016	us-gaap	Revenues Revenues	248460000	USD
CY2017Q1	us-gaap	Revenues Revenues	66388000	USD
CY2017Q2	us-gaap	Revenues Revenues	69836000	USD
CY2017Q3	us-gaap	Revenues Revenues	71352000	USD
CY2017Q4	us-gaap	Revenues Revenues	71083000	USD
CY2017	us-gaap	Revenues Revenues	278659000	USD
CY2015	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	53123000	USD
CY2016	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	59525000	USD
CY2016Q1	us-gaap	Revenues Revenues	59018000	USD
CY2017	us-gaap	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense	67173000	USD
CY2016Q4	us-gaap	Security Deposit SecurityDeposit	8208000	USD
CY2017Q4	us-gaap	Security Deposit SecurityDeposit	8208000	USD
CY2016Q4	us-gaap	Security Deposit Liability SecurityDepositLiability	21325000	USD
CY2017Q4	us-gaap	Security Deposit Liability SecurityDepositLiability	21275000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.047
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.062
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.053
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.178
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.191
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.198
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0098
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0091
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0149
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized	1810850	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	465831	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	69.85
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	5551000	USD
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	4730000	USD
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	2314000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	4.74
CY2016	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	3.65
CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	5.76
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	4531000	USD
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	871671	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	741676	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	541679	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	859182	shares
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P2Y9M25D
CY2016	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P2Y11M4D
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P2Y11M2D
CY2017Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	2578000	USD
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y0M4D
CY2016Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	3.99
CY2017Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Weighted Average Grant Date Fair Value SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue	5.10
CY2017	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y4M22D
CY2014Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	60.43
CY2015Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	60.43
CY2016Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	65.84
CY2017Q4	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Outstanding Options Weighted Average Exercise Price Beginning Balance1 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1	70.11
CY2015	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	49389000	USD
CY2016	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	104190000	USD
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	122237000	USD
CY2015	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	1000	USD
CY2016	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	-2000	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	0	USD
CY2017Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	1000000	shares
CY2014Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1049933000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1142460000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1209590000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1322117000	USD
CY2015	us-gaap	Straight Line Rent StraightLineRent	24623000	USD
CY2016	us-gaap	Straight Line Rent StraightLineRent	22198000	USD
CY2017	us-gaap	Straight Line Rent StraightLineRent	26090000	USD
CY2016Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	9740000	USD
CY2017Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	10453000	USD
CY2014Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	0	USD
CY2015Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	0	USD
CY2016Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	38520221	shares
CY2016Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	0	USD
CY2017Q4	us-gaap	Valuation Allowances And Reserves Balance ValuationAllowancesAndReservesBalance	0	USD
CY2015	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	0	USD
CY2016	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	0	USD
CY2017	us-gaap	Valuation Allowances And Reserves Charged To Cost And Expense ValuationAllowancesAndReservesChargedToCostAndExpense	0	USD
CY2015	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	0	USD
CY2016	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	0	USD
CY2017	us-gaap	Valuation Allowances And Reserves Deductions ValuationAllowancesAndReservesDeductions	0	USD
CY2015	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	37604594	shares
CY2016	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	39013412	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	40894219	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	37644171	shares
CY2016Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	38414791	shares
CY2016Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	38561384	shares
CY2016Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39651900	shares
CY2016Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39993445	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	39155380	shares
CY2017Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	40108762	shares
CY2017Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41245173	shares
CY2017Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41448263	shares
CY2017Q4	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41803615	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	41151453	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	37604594	shares
CY2016Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	38401647	shares
CY2016Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39283919	shares
CY2016Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39847860	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39013412	shares
CY2017Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	39953804	shares
CY2017Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40982244	shares
CY2017Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41108699	shares
CY2017Q4	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	41532130	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	40894219	shares
CY2015	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	3413000	USD
CY2016	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	3514000	USD
CY2017	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	3592000	USD
CY2017	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Concentration of Credit Risks</font><font style="font-family:inherit;font-size:10pt;"> - Our credit risks primarily relate to cash and cash equivalents and investments in mortgage and other notes receivable. Cash and cash equivalents are primarily held in bank accounts and overnight investments. We maintain our bank deposit accounts with large financial institutions in amounts that often exceed federally-insured limits. We have not experienced any losses in such accounts. Our mortgages and other notes receivable consist primarily of secured loans on facilities. </font></div><div style="line-height:120%;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;text-align:justify;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Our financial instruments, principally our investments in notes receivable and marketable securities, if any, are subject to the possibility of loss of the carrying values as a result of either the failure of other parties to perform according to their contractual obligations or changes in market prices which may make the instruments less valuable. We obtain collateral in the form of mortgage liens and other protective rights for notes receivable and continually monitor these rights in order to reduce such possibilities of loss. We evaluate the need to provide for reserves for potential losses on our financial instruments based on management’s periodic review of our portfolio on an instrument-by-instrument basis.</font></div></div>
CY2017	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;text-indent:17px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Reclassifications</font><font style="font-family:inherit;font-size:10pt;"> - We have reclassified certain balances where necessary to conform the presentation of prior periods to the current period. We have combined our investment in marketable securities into other assets in our Consolidated Balance Sheet at December 31, 2016. These reclassifications had no effect on previously reported net income.</font></div></div>
CY2017	us-gaap	Revenue Recognition Deferred Revenue RevenueRecognitionDeferredRevenue	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Deferred Income</font><font style="font-family:inherit;font-size:10pt;"> - Deferred income primarily includes non-refundable lease commitment fees received by us, which are amortized into income over the expected period of the related loan or lease. In the event that our financing commitment to a potential borrower or lessee expires, the related commitment fees are recognized into income immediately. Commitment fees may be charged based on the terms of the lease agreements and the creditworthiness of the parties.</font></div></div>
CY2017	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;text-indent:17px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Use of Estimates -</font><font style="font-family:inherit;font-size:10pt;"> The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the U.S. requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</font></div><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></div>

Files In Submission

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$NHI
National Health Investors Inc Stock $nhi

2017 Q4 Form 10-K Financial Statement

#000087786018000013 Filed on February 16, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NHI National Health Investors Inc Stock $nhi

2017 Q4 Form 10-K Financial Statement

#000087786018000013 Filed on February 16, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NHI
National Health Investors Inc Stock $nhi