$OPI
OFFICE PROPERTIES INCOME TRUST Stock $opi

$opi Overview Financials Valuation SEC Filings Company Website

2017 Form 8-K Financial Statement

#000145677218000042 Filed on November 05, 2018

Income Statement

Concept	2017	2016 Q4	2016 Q3
Revenue	$316.5M	$66.03M	$64.48M
YoY Change	22.6%	7.04%	3.84%
Cost Of Revenue	$103.3M	$22.20M	$21.40M
YoY Change	21.53%	6.22%	7.0%
Gross Profit	$213.2M	$43.90M	$43.00M
YoY Change	23.09%	7.6%	2.14%
Gross Profit Margin	67.35%	66.48%	66.69%
Selling, General & Admin	$39.80M	$7.500M	$9.300M
YoY Change	23.6%	0.0%	4.49%
% of Gross Profit	18.67%	17.08%	21.63%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$52.43M	$17.90M	$18.00M
YoY Change	23.39%	7.19%	6.51%
% of Gross Profit	24.59%	40.77%	41.86%
Operating Expenses	$149.4M	$25.90M	$27.80M
YoY Change	41.88%	6.15%	6.51%
Operating Profit	$54.32M	$18.00M	$15.18M
YoY Change	-18.54%	9.76%	-3.52%
Interest Expense	$65.41M	-$12.40M	$12.61M
YoY Change	45.15%	-40.1%	37.99%
% of Operating Profit	120.41%	-68.89%	83.04%
Other Income/Expense, Net
YoY Change
Pretax Income	-$9.625M	$4.700M	$2.998M
YoY Change	-141.98%	-200.0%	-54.68%
Income Tax	$101.0K	$0.00	$13.00K
% Of Pretax Income		0.0%	0.43%
Net Earnings	$12.09M	$12.10M	$11.60M
YoY Change	-79.1%	-626.09%	-31.36%
Net Earnings / Revenue	3.82%	18.33%	17.99%
Basic Earnings Per Share
Diluted Earnings Per Share	$570.8K	$679.8K	$651.7K
COMMON SHARES
Basic Shares Outstanding	21.16M shares	71.18M shares	71.05M shares
Diluted Shares Outstanding	21.16M shares		71.08M shares

Balance Sheet

Concept	2017	2016 Q4	2016 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$16.60M	$29.90M	$13.70M
YoY Change	-44.48%	239.77%	21.24%
Cash & Equivalents	$16.60M	$29.94M	$13.75M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables	$61.40M	$48.50M	$49.40M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$78.00M	$78.40M	$63.10M
YoY Change	-0.51%	44.92%	20.88%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.986B	$1.717B	$1.608B
YoY Change	73.91%	10.16%	2.6%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$517.7M	$487.7M	$492.0M
YoY Change	6.15%	-0.75%	-3.89%
Other Assets	$26.10M	$34.20M	$33.00M
YoY Change	-23.68%	23.02%	-10.81%
Total Long-Term Assets	$3.626B	$2.307B	$2.202B
YoY Change	57.18%	9.09%	1.25%
TOTAL ASSETS
Total Short-Term Assets	$78.00M	$78.40M	$63.10M
Total Long-Term Assets	$3.626B	$2.307B	$2.202B
Total Assets	$3.704B	$2.385B	$2.265B
YoY Change	55.28%	9.99%	1.71%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$89.40M	$54.00M	$52.20M
YoY Change	65.56%	6.93%	7.19%
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	$94.30M	$57.50M	$56.20M
YoY Change	64.0%	7.68%	11.29%
LONG-TERM LIABILITIES
Long-Term Debt	$2.266B	$1.382B	$1.247B
YoY Change	63.95%	20.63%	8.47%
Other Long-Term Liabilities	$13.60M	$10.70M	$11.30M
YoY Change	27.1%	-16.41%	-16.91%
Total Long-Term Liabilities	$2.279B	$1.393B	$1.258B
YoY Change	63.67%	20.22%	8.18%
TOTAL LIABILITIES
Total Short-Term Liabilities	$94.30M	$57.50M	$56.20M
Total Long-Term Liabilities	$2.279B	$1.393B	$1.258B
Total Liabilities	$2.374B	$1.450B	$1.314B
YoY Change	63.68%	19.66%	8.3%
SHAREHOLDERS EQUITY
Retained Earnings		$96.33M	$84.26M
YoY Change		150.3%
Common Stock		$1.474B	$1.474B
YoY Change		0.07%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.330B	$935.0M	$950.7M
YoY Change
Total Liabilities & Shareholders Equity	$3.704B	$2.385B	$2.265B
YoY Change	55.28%	9.99%	1.71%

Cashflow Statement

Concept	2017	2016 Q4	2016 Q3
OPERATING ACTIVITIES
Net Income	$12.09M	$12.10M	$11.60M
YoY Change	-79.1%	-626.09%	-31.36%
Depreciation, Depletion And Amortization	$52.43M	$17.90M	$18.00M
YoY Change	23.39%	7.19%	6.51%
Cash From Operating Activities	$137.6M	$32.60M	$19.70M
YoY Change	8.55%	23.95%	-24.81%
INVESTING ACTIVITIES
Capital Expenditures	-$1.233B	-$126.2M	-$13.70M
YoY Change	428.5%	1228.42%	372.41%
Acquisitions
YoY Change
Other Investing Activities	$44.80M	$6.000M	$5.000M
YoY Change	194.74%	-30.23%	21.95%
Cash From Investing Activities	-$1.188B	-$120.4M	-$8.500M
YoY Change	444.74%	14950.0%	-872.73%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	-$493.6M
YoY Change	-146569.44%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$1.040B	104.0M	-6.400M
YoY Change	827.93%	-470.11%	-72.17%
NET CHANGE
Cash From Operating Activities	$137.6M	32.60M	19.70M
Cash From Investing Activities	-$1.188B	-120.4M	-8.500M
Cash From Financing Activities	$1.040B	104.0M	-6.400M
Net Change In Cash	-$10.79M	16.20M	4.800M
YoY Change	-152.22%	-723.08%	11.63%
FREE CASH FLOW
Cash From Operating Activities	$137.6M	$32.60M	$19.70M
Capital Expenditures	-$1.233B	-$126.2M	-$13.70M
Free Cash Flow	$1.371B	$158.8M	$33.40M
YoY Change	280.69%	343.58%	14.78%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2017Q4	us-gaap	Other Assets OtherAssets	96033000	USD
CY2017	dei	Amendment Flag AmendmentFlag	false
CY2017	dei	Document Period End Date DocumentPeriodEndDate	2017-12-31
CY2017	dei	Document Type DocumentType	8-K
CY2017	dei	Entity Central Index Key EntityCentralIndexKey	0001456772
CY2017	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2017	dei	Entity Registrant Name EntityRegistrantName	Government Properties Income Trust
CY2017Q4	gov	Acquired Below Market Lease Amortization Period AcquiredBelowMarketLeaseAmortizationPeriod	P3Y9M18D
CY2017Q4	gov	Aggregate Net Book Value Of Real Estate Properties Collateralized AggregateNetBookValueOfRealEstatePropertiesCollateralized	432562000	USD
CY2017Q4	gov	Aggregate Principal Amount Of Real Estate Properties Collateralized AggregatePrincipalAmountOfRealEstatePropertiesCollateralized	183147000	USD
CY2017Q4	gov	Available For Sale Securities Common Shares Owned AvailableForSaleSecuritiesCommonSharesOwned	1214225	shares
CY2016Q4	gov	Business Acquisition Purchase Price Allocation Real Estate Leases BusinessAcquisitionPurchasePriceAllocationRealEstateLeases	37928000	USD
CY2015	gov	Business Combination Consideration Transferred Assumed Working Capital BusinessCombinationConsiderationTransferredAssumedWorkingCapital	0	USD
CY2016	gov	Business Combination Consideration Transferred Assumed Working Capital BusinessCombinationConsiderationTransferredAssumedWorkingCapital	0	USD
CY2017	gov	Business Combination Consideration Transferred Assumed Working Capital BusinessCombinationConsiderationTransferredAssumedWorkingCapital	1596000	USD
CY2015	gov	Common Stock Dividends Capital Gain Distribution Percentage CommonStockDividendsCapitalGainDistributionPercentage	0.1290
CY2015	gov	Common Stock Dividends Internal Revenue Code Section1250 Gain Distribution Percentage CommonStockDividendsInternalRevenueCodeSection1250GainDistributionPercentage	0.0161
CY2015	gov	Common Stock Dividends Ordinary Income Distribution Percentage CommonStockDividendsOrdinaryIncomeDistributionPercentage	0.4744
CY2016	gov	Common Stock Dividends Ordinary Income Distribution Percentage CommonStockDividendsOrdinaryIncomeDistributionPercentage	0.6274
CY2017	gov	Common Stock Dividends Ordinary Income Distribution Percentage CommonStockDividendsOrdinaryIncomeDistributionPercentage	0.5065
CY2015	gov	Common Stock Dividends Qualified Dividend Distribution Percentage CommonStockDividendsQualifiedDividendDistributionPercentage	0.0093
CY2016	gov	Common Stock Dividends Qualified Dividend Distribution Percentage CommonStockDividendsQualifiedDividendDistributionPercentage	0.0105
CY2015	gov	Common Stock Dividends Return Of Capital Distribution Percentage CommonStockDividendsReturnOfCapitalDistributionPercentage	0.3712
CY2016	gov	Common Stock Dividends Return Of Capital Distribution Percentage CommonStockDividendsReturnOfCapitalDistributionPercentage	0.3621
CY2017	gov	Common Stock Dividends Return Of Capital Distribution Percentage CommonStockDividendsReturnOfCapitalDistributionPercentage	0.4935
CY2016Q4	gov	Cumulative Common Stock Distributions CumulativeCommonStockDistributions	662527000	USD
CY2017Q4	gov	Cumulative Common Stock Distributions CumulativeCommonStockDistributions	807736000	USD
CY2017	gov	Deferred Finance Costs Future Amortization Expense After Year Five DeferredFinanceCostsFutureAmortizationExpenseAfterYearFive	8049000	USD
CY2017	gov	Deferred Finance Costs Future Amortization Expense Year Five DeferredFinanceCostsFutureAmortizationExpenseYearFive	826000	USD
CY2017	gov	Deferred Finance Costs Future Amortization Expense Year Four DeferredFinanceCostsFutureAmortizationExpenseYearFour	1217000	USD
CY2017	gov	Deferred Finance Costs Future Amortization Expense Year One DeferredFinanceCostsFutureAmortizationExpenseYearOne	3469000	USD
CY2017	gov	Deferred Finance Costs Future Amortization Expense Year Three DeferredFinanceCostsFutureAmortizationExpenseYearThree	1357000	USD
CY2017	gov	Deferred Finance Costs Future Amortization Expense Year Two DeferredFinanceCostsFutureAmortizationExpenseYearTwo	2217000	USD
CY2016Q4	gov	Disposal Group Including Discontinued Operations Equity Method Investments DisposalGroupIncludingDiscontinuedOperationsEquityMethodInvestments	487708000	USD
CY2017Q4	gov	Disposal Group Including Discontinued Operations Equity Method Investments DisposalGroupIncludingDiscontinuedOperationsEquityMethodInvestments	467499000	USD
CY2015Q4	gov	Dividends Common Stock Paid In Kind Per Share DividendsCommonStockPaidInKindPerShare	0.1284
CY2017Q4	gov	Historical Cost HistoricalCost	26888000	USD
CY2015	gov	Increase Decrease To Rental Income From Amortization In Capitalized Above And Below Market Leases IncreaseDecreaseToRentalIncomeFromAmortizationInCapitalizedAboveAndBelowMarketLeases	-1157000	USD
CY2016	gov	Increase Decrease To Rental Income From Amortization In Capitalized Above And Below Market Leases IncreaseDecreaseToRentalIncomeFromAmortizationInCapitalizedAboveAndBelowMarketLeases	-1457000	USD
CY2017	gov	Increase Decrease To Rental Income From Amortization In Capitalized Above And Below Market Leases IncreaseDecreaseToRentalIncomeFromAmortizationInCapitalizedAboveAndBelowMarketLeases	-2764000	USD
CY2017	gov	Mortgage Loans On Real Estate Assumed In Acquisitions Number Of Loans MortgageLoansOnRealEstateAssumedInAcquisitionsNumberOfLoans	8
CY2015	gov	Noncash Distribution Of Holding Company Shares Received From Affiliate NoncashDistributionOfHoldingCompanySharesReceivedFromAffiliate	5244000	USD
CY2016	gov	Noncash Distribution Of Holding Company Shares Received From Affiliate NoncashDistributionOfHoldingCompanySharesReceivedFromAffiliate	0	USD
CY2017	gov	Noncash Distribution Of Holding Company Shares Received From Affiliate NoncashDistributionOfHoldingCompanySharesReceivedFromAffiliate	0	USD
CY2015	gov	Noncashor Part Noncash Investing Activities Real Estate Sales NoncashorPartNoncashInvestingActivitiesRealEstateSales	0	USD
CY2016	gov	Noncashor Part Noncash Investing Activities Real Estate Sales NoncashorPartNoncashInvestingActivitiesRealEstateSales	3600000	USD
CY2017	gov	Noncashor Part Noncash Investing Activities Real Estate Sales NoncashorPartNoncashInvestingActivitiesRealEstateSales	0	USD
CY2017	gov	Noncontrolling Interest Number Of Buildings NoncontrollingInterestNumberOfBuildings	3	building
CY2017	gov	Noncontrolling Interest Number Of Properties NoncontrollingInterestNumberOfProperties	2	property
CY2016	gov	Number Of Buildings Acquired NumberOfBuildingsAcquired	5	building
CY2017Q4	gov	Number Of Buildings Collateralized NumberOfBuildingsCollateralized	8	building
CY2017Q4	gov	Number Of Government Tenants Exercisable Right To Terminate NumberOfGovernmentTenantsExercisableRightToTerminate	26	tenant
CY2017	gov	Number Of Joint Ventures NumberOfJointVentures	2	joint_venture
CY2017	gov	Number Of Operating Lease Executed NumberOfOperatingLeaseExecuted	75	lease
CY2017Q4	gov	Number Of Other Governments NumberOfOtherGovernments	5	government_tenant
CY2016Q4	gov	Number Of Properties Acquired NumberOfPropertiesAcquired	3	property
CY2017Q4	gov	Number Of Real Estate Properties Collateralized NumberOfRealEstatePropertiesCollateralized	8	property
CY2017Q4	gov	Number Of State Governments NumberOfStateGovernments	13	state_government
CY2017Q2	gov	Number Of Trustees NumberOfTrustees	1	trustee
CY2017	gov	Operating Leases Committed Expenditures On Leases Executed In Period OperatingLeasesCommittedExpendituresOnLeasesExecutedInPeriod	18249000	USD
CY2017	gov	Operating Leases Committed Expenditures On Leases Executed In Period Area Of Leased Property OperatingLeasesCommittedExpendituresOnLeasesExecutedInPeriodAreaOfLeasedProperty	1604783	sqft
CY2017Q4	gov	Operating Leases Committed Expenditures On Leases Executed In Period Committed But Unspent Tenant Related Obligations OperatingLeasesCommittedExpendituresOnLeasesExecutedInPeriodCommittedButUnspentTenantRelatedObligations	31310000	USD
CY2017	gov	Operating Leases Weighted Average Lease Term OperatingLeasesWeightedAverageLeaseTerm	P7Y7M6D
CY2015	gov	Preferred Stock Issued PreferredStockIssued	0	USD
CY2016	gov	Preferred Stock Issued PreferredStockIssued	0	USD
CY2017	gov	Preferred Stock Issued PreferredStockIssued	20221000	USD
CY2015	gov	Real Estate Accumulated Depreciation Deductions Reclassification Assets Held For Sale RealEstateAccumulatedDepreciationDeductionsReclassificationAssetsHeldForSale	275000	USD
CY2017	gov	Real Estate Accumulated Depreciation Impairment Or Writedowns RealEstateAccumulatedDepreciationImpairmentOrWritedowns	0	USD
CY2017	gov	Real Estate And Accumulated Depreciation Buildings And Improvements Life Used For Depreciation RealEstateAndAccumulatedDepreciationBuildingsAndImprovementsLifeUsedForDepreciation	P40Y
CY2017	gov	Real Estate And Accumulated Depreciation Equipment Life Used For Depreciation RealEstateAndAccumulatedDepreciationEquipmentLifeUsedForDepreciation	P12Y
CY2015	gov	Real Estate Deductions Reclassification Assets Held For Sale RealEstateDeductionsReclassificationAssetsHeldForSale	3346000	USD
CY2016Q4	gov	Real Estate Purchase Price Allocation Acquired Real Estate Lease Obligations RealEstatePurchasePriceAllocationAcquiredRealEstateLeaseObligations	587000	USD
CY2016Q4	gov	Real Estate Purchase Price Allocation Building And Building Improvements RealEstatePurchasePriceAllocationBuildingAndBuildingImprovements	145006000	USD
CY2016Q4	gov	Real Estate Purchase Price Allocation Other Assumed Assets RealEstatePurchasePriceAllocationOtherAssumedAssets	2167000	USD
CY2016Q3	gov	Shares Paid For Tax Withholding Average Price Per Share SharesPaidForTaxWithholdingAveragePricePerShare	23.54
CY2015	gov	Straight Line Rent Continuing And Discontinued Operations StraightLineRentContinuingAndDiscontinuedOperations	3978000	USD
CY2016	gov	Straight Line Rent Continuing And Discontinued Operations StraightLineRentContinuingAndDiscontinuedOperations	2691000	USD
CY2017	gov	Straight Line Rent Continuing And Discontinued Operations StraightLineRentContinuingAndDiscontinuedOperations	5582000	USD
CY2017Q4	srt	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	3911604	USD
CY2016Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	48458000	USD
CY2017Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	61429000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	26957000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	60427000	USD
CY2016Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1473533000	USD
CY2017Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	1968217000	USD
CY2017Q2	us-gaap	Adjustments Related To Tax Withholding For Share Based Compensation AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation	10000	USD
CY2015	us-gaap	Amortization Of Deferred Leasing Fees AmortizationOfDeferredLeasingFees	2349000	USD
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CY2017	us-gaap	Amortization Of Deferred Leasing Fees AmortizationOfDeferredLeasingFees	3802000	USD
CY2015	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1376000	USD
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CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	3420000	USD
CY2015	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	1376000	USD
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CY2017	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	3420000	USD
CY2015	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	28624000	USD
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CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	56174000	USD
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CY2016Q4	us-gaap	Assets Of Disposal Group Including Discontinued Operation AssetsOfDisposalGroupIncludingDiscontinuedOperation	12541000	USD
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CY2016	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	11630000	USD
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CY2015	us-gaap	Business Combination Acquisition Related Costs BusinessCombinationAcquisitionRelatedCosts	811000	USD
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CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	8785000	USD
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CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	16569000	USD
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CY2016Q4	us-gaap	Common Stock Value CommonStockValue	712000	USD
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	991000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-224865000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	99667000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	45560000	USD
CY2015	us-gaap	Costs And Expenses CostsAndExpenses	182580000	USD
CY2016	us-gaap	Costs And Expenses CostsAndExpenses	191503000	USD
CY2017	us-gaap	Costs And Expenses CostsAndExpenses	262214000	USD
CY2017Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	2263147000	USD
CY2017Q4	us-gaap	Debt Instrument Unamortized Discount Premium And Debt Issuance Costs Net DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet	18055000	USD
CY2016Q4	us-gaap	Deferred Costs Leasing Net DeferredCostsLeasingNet	21079000	USD
CY2017Q4	us-gaap	Deferred Costs Leasing Net DeferredCostsLeasingNet	22977000	USD
CY2016Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	14725000	USD
CY2017Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	15750000	USD
CY2017Q4	us-gaap	Deferred Gain On Sale Of Property DeferredGainOnSaleOfProperty	712000	USD
CY2015	us-gaap	Depreciation Depreciation	38987000	USD
CY2016	us-gaap	Depreciation Depreciation	42489000	USD
CY2017	us-gaap	Depreciation Depreciation	52427000	USD
CY2015	us-gaap	Depreciation And Amortization DepreciationAndAmortization	68696000	USD
CY2016	us-gaap	Depreciation And Amortization DepreciationAndAmortization	73153000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	109588000	USD
CY2015	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic And Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicAndDilutedShare	-3.22
CY2016	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic And Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicAndDilutedShare	0.49
CY2017	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic And Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicAndDilutedShare	0.26
CY2015	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	130792000	USD
CY2016	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	122366000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	145209000	USD
CY2016Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	3520000	USD
CY2017Q4	us-gaap	Due To Related Parties Current And Noncurrent DueToRelatedPartiesCurrentAndNoncurrent	4859000	USD
CY2015	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-2.97
CY2016Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.24
CY2016Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.24
CY2016Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.16
CY2016Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.17
CY2016	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.81
CY2017Q1	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.10
CY2017Q2	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.16
CY2017Q3	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.11
CY2017Q4	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	-0.18
CY2017	us-gaap	Earnings Per Share Basic And Diluted EarningsPerShareBasicAndDiluted	0.14
CY2015	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	18620000	USD
CY2016	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	35381000	USD
CY2017	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	21584000	USD
CY2015	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	203297000	USD
CY2016	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	0	USD
CY2017	us-gaap	Equity Method Investment Other Than Temporary Impairment EquityMethodInvestmentOtherThanTemporaryImpairment	0	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	124848000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	351872000	USD
CY2015	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	18620000	USD
CY2016	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	35381000	USD
CY2017	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	21584000	USD
CY2015	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	0	USD
CY2016	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	79000	USD
CY2017	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	0	USD
CY2015	us-gaap	Gain Loss On Sale Of Stock In Subsidiary Or Equity Method Investee GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee	-42145000	USD
CY2016	us-gaap	Gain Loss On Sale Of Stock In Subsidiary Or Equity Method Investee GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee	86000	USD
CY2017	us-gaap	Gain Loss On Sale Of Stock In Subsidiary Or Equity Method Investee GainLossOnSaleOfStockInSubsidiaryOrEquityMethodInvestee	72000	USD
CY2015	us-gaap	Gain Or Loss On Sale Of Stock In Subsidiary GainOrLossOnSaleOfStockInSubsidiary	-12368000	USD
CY2016	us-gaap	Gain Or Loss On Sale Of Stock In Subsidiary GainOrLossOnSaleOfStockInSubsidiary	0	USD
CY2017	us-gaap	Gain Or Loss On Sale Of Stock In Subsidiary GainOrLossOnSaleOfStockInSubsidiary	0	USD
CY2015	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	34000	USD
CY2016	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	104000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1715000	USD
CY2015	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	14826000	USD
CY2016	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	14897000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	18847000	USD
CY2015	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	USD
CY2016	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	USD
CY2017	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	9490000	USD
CY2015	us-gaap	Income Loss Before Gain Or Loss On Sale Of Properties Extraordinary Items And Cumulative Effects Of Accounting Changes IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges	-209961000	USD
CY2016	us-gaap	Income Loss Before Gain Or Loss On Sale Of Properties Extraordinary Items And Cumulative Effects Of Accounting Changes IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges	57764000	USD
CY2017	us-gaap	Income Loss Before Gain Or Loss On Sale Of Properties Extraordinary Items And Cumulative Effects Of Accounting Changes IncomeLossBeforeGainOrLossOnSaleOfPropertiesExtraordinaryItemsAndCumulativeEffectsOfAccountingChanges	12090000	USD
CY2015	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	17386000	USD
CY2016	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	22886000	USD
CY2017	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-9739000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	17452000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	22850000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-9625000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.25
CY2016	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	0.32
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic And Diluted Share IncomeLossFromContinuingOperationsPerBasicAndDilutedShare	-0.12
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	-227347000	USD
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	34878000	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	21829000	USD
CY2015	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	20000	USD
CY2016	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	137000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-13000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	86000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	101000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	101000	USD
CY2015	us-gaap	Income Taxes Paid IncomeTaxesPaid	143000	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	111000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	117000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	1097000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	1970000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	11696000	USD
CY2015	us-gaap	Increase Decrease In Assets Held For Sale IncreaseDecreaseInAssetsHeldForSale	0	USD
CY2016	us-gaap	Increase Decrease In Assets Held For Sale IncreaseDecreaseInAssetsHeldForSale	0	USD
CY2017	us-gaap	Increase Decrease In Assets Held For Sale IncreaseDecreaseInAssetsHeldForSale	619000	USD
CY2015	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	4741000	USD
CY2016	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	10196000	USD
CY2017	us-gaap	Increase Decrease In Deferred Leasing Fees IncreaseDecreaseInDeferredLeasingFees	5017000	USD
CY2015	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	725000	USD
CY2016	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	634000	USD
CY2017	us-gaap	Increase Decrease In Due To Related Parties IncreaseDecreaseInDueToRelatedParties	1339000	USD
CY2015	us-gaap	Increase Decrease In Leasing Receivables IncreaseDecreaseInLeasingReceivables	2729000	USD
CY2016	us-gaap	Increase Decrease In Leasing Receivables IncreaseDecreaseInLeasingReceivables	-1670000	USD
CY2017	us-gaap	Increase Decrease In Leasing Receivables IncreaseDecreaseInLeasingReceivables	4990000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-515000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-25000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1368000	USD
CY2015	us-gaap	Increase Decrease In Restricted Cash For Operating Activities IncreaseDecreaseInRestrictedCashForOperatingActivities	0	USD
CY2016	us-gaap	Increase Decrease In Restricted Cash For Operating Activities IncreaseDecreaseInRestrictedCashForOperatingActivities	0	USD
CY2017	us-gaap	Increase Decrease In Restricted Cash For Operating Activities IncreaseDecreaseInRestrictedCashForOperatingActivities	0	USD
CY2017	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	511000	USD
CY2015	us-gaap	Interest Expense InterestExpense	37008000	USD
CY2016	us-gaap	Interest Expense InterestExpense	45060000	USD
CY2017	us-gaap	Interest Expense InterestExpense	65406000	USD
CY2015	us-gaap	Interest Paid InterestPaid	35500000	USD
CY2016	us-gaap	Interest Paid InterestPaid	41139000	USD
CY2017	us-gaap	Interest Paid InterestPaid	55048000	USD
CY2016Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	1620905000	USD
CY2017Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	2348613000	USD
CY2015	us-gaap	Investment Income Interest InvestmentIncomeInterest	14000	USD
CY2016	us-gaap	Investment Income Interest InvestmentIncomeInterest	158000	USD
CY2017	us-gaap	Investment Income Interest InvestmentIncomeInterest	1962000	USD
CY2016Q4	us-gaap	Land Land	267855000	USD
CY2017Q4	us-gaap	Land Land	627108000	USD
CY2016Q4	us-gaap	Liabilities Liabilities	1450062000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	2353026000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	2385066000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3703565000	USD
CY2015	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2016	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
CY2017	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	167548000	USD
CY2016Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	45000	USD
CY2017Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation LiabilitiesOfDisposalGroupIncludingDiscontinuedOperation	0	USD
CY2016Q4	us-gaap	Line Of Credit LineOfCredit	160000000	USD
CY2017Q4	us-gaap	Line Of Credit LineOfCredit	570000000	USD
CY2017Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	2500000000	USD
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	2245092000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	399563000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	3672000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	575518000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	14420000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	338433000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	931541000	USD
CY2017Q4	us-gaap	Minority Interest Ownership Percentage By Parent MinorityInterestOwnershipPercentageByParent	1
CY2017Q4	us-gaap	Mortgage Loans On Real Estate MortgageLoansOnRealEstate	47000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-53761000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	112055000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1039794000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-63340000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-218113000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1188139000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	110837000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	126722000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	137554000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	-209961000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	57843000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	12090000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-209961000	USD
CY2016Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	17387000	USD
CY2016Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	16813000	USD
CY2016Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	11578000	USD
CY2016Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	12065000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	57843000	USD
CY2017Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	7415000	USD
CY2017Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	11677000	USD
CY2017Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	10989000	USD
CY2017Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-18266000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	11815000	USD
CY2015	us-gaap	Noncash Or Part Noncash Acquisition Accounts Receivable Acquired1 NoncashOrPartNoncashAcquisitionAccountsReceivableAcquired1	0	USD
CY2016	us-gaap	Noncash Or Part Noncash Acquisition Accounts Receivable Acquired1 NoncashOrPartNoncashAcquisitionAccountsReceivableAcquired1	3600000	USD
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Accounts Receivable Acquired1 NoncashOrPartNoncashAcquisitionAccountsReceivableAcquired1	0	USD
CY2015	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	13545000	USD
CY2016	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	0	USD
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Investments Acquired1 NoncashOrPartNoncashAcquisitionInvestmentsAcquired1	0	USD
CY2017	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2016Q4	us-gaap	Off Market Lease Unfavorable OffMarketLeaseUnfavorable	10626000	USD
CY2017Q4	us-gaap	Off Market Lease Unfavorable OffMarketLeaseUnfavorable	13635000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	65969000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	66677000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	54318000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	4893	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	1543	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	139	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	1627	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	1584	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable OperatingLeasesFutureMinimumPaymentsReceivable	1923459000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	367883000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Five Years OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears	180558000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	220758000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	258847000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	330792000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Thereafter OperatingLeasesFutureMinimumPaymentsReceivableThereafter	564621000	USD
CY2015	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	248549000	USD
CY2016Q1	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	63611000	USD
CY2016Q2	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	64061000	USD
CY2016Q3	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	64478000	USD
CY2016Q4	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	66030000	USD
CY2016	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	258180000	USD
CY2017Q1	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	69296000	USD
CY2017Q2	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	69887000	USD
CY2017Q3	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	70179000	USD
CY2017Q4	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	107170000	USD
CY2017	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	316532000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	374000	USD
CY2016Q4	us-gaap	Other Assets OtherAssets	68005000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	33470000	USD
CY2015	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	-5513000	USD
CY2016	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	11359000	USD
CY2017	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	9428000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-5513000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	-9391000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	30465000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Before Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentBeforeTax	24042000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-9391000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	30465000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	24042000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-14904000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	41824000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	11359000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	9428000	USD
CY2015	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	50425000	USD
CY2016	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	54290000	USD
CY2017	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	65349000	USD
CY2015	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	811000	USD
CY2016	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	971000	USD
CY2017	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	1216000	USD
CY2016Q4	us-gaap	Other Liabilities OtherLiabilities	54019000	USD
CY2017Q4	us-gaap	Other Liabilities OtherLiabilities	89440000	USD
CY2015	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-817000	USD
CY2016	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-284000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-300000	USD
CY2015	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	19163000	USD
CY2016	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	32999000	USD
CY2017	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	45940000	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	172000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	337000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	264000	USD
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	121660000	USD
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	122366000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	145209000	USD
CY2015	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	21000	USD
CY2016	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	544000	USD
CY2017	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	4644000	USD
CY2016	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	199304000	USD
CY2015	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	7226000	USD
CY2016	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	0	USD
CY2017	us-gaap	Payments To Acquire Businesses And Interest In Affiliates PaymentsToAcquireBusinessesAndInterestInAffiliates	0	USD
CY2015	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	95821000	USD
CY2016	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2017	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2015	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	0	USD
CY2016	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	200331000	USD
CY2017	us-gaap	Payments To Acquire Real Estate PaymentsToAcquireRealEstate	1187012000	USD
CY2017Q4	us-gaap	Real Estate Investments Joint Ventures RealEstateInvestmentsJointVentures	50202000	USD
CY2015	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2016	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2017	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	275000	USD
CY2015	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	28410000	USD
CY2016	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	14954000	USD
CY2017	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	29248000	USD
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	493866000	USD
CY2015	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	300235000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	297954000	USD
CY2015	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	195000000	USD
CY2016	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	399000000	USD
CY2017	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	645000000	USD
CY2015	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	0	USD
CY2016	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	0	USD
CY2017	us-gaap	Proceeds From Real Estate And Real Estate Joint Ventures ProceedsFromRealEstateAndRealEstateJointVentures	482000	USD
CY2015	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	30460000	USD
CY2016	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	263000	USD
CY2017	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	15083000	USD
CY2014Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	219791000	USD
CY2015Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	255879000	USD
CY2016Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	296804000	USD
CY2017Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	341848000	USD
CY2015	us-gaap	Real Estate Accumulated Depreciation Other Additions RealEstateAccumulatedDepreciationOtherAdditions	38987000	USD
CY2016	us-gaap	Real Estate Accumulated Depreciation Other Additions RealEstateAccumulatedDepreciationOtherAdditions	42404000	USD
CY2017	us-gaap	Real Estate Accumulated Depreciation Other Additions RealEstateAccumulatedDepreciationOtherAdditions	45315000	USD
CY2015	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	2624000	USD
CY2016	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	1479000	USD
CY2017	us-gaap	Real Estate Accumulated Depreciation Real Estate Sold RealEstateAccumulatedDepreciationRealEstateSold	271000	USD
CY2015	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	2624000	USD
CY2016	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	1479000	USD
CY2017	us-gaap	Real Estate Cost Of Real Estate Sold RealEstateCostOfRealEstateSold	3687000	USD
CY2014Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	1682480000	USD
CY2015Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	1696132000	USD
CY2016Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	1888760000	USD
CY2017Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	2975721000	USD
CY2016Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	296804000	USD
CY2017Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	341848000	USD
CY2016Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	1888760000	USD
CY2017Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	2975721000	USD
CY2016Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	1591956000	USD
CY2017Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	2633873000	USD
CY2016Q4	us-gaap	Real Estate Investments Joint Ventures RealEstateInvestmentsJointVentures	0	USD
CY2016	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	107933000	USD
CY2017	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	11909000	USD
CY2015Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	1022000	USD
CY2015	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	19622000	USD
CY2016	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	194107000	USD
CY2017	us-gaap	Real Estate Other Acquisitions RealEstateOtherAcquisitions	1100138000	USD
CY2015	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	29906000	USD
CY2016	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	30703000	USD
CY2017	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	37942000	USD
CY2015	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	78000000	USD
CY2016	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	356000000	USD
CY2017	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	235000000	USD
CY2015	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	48908000	USD
CY2016Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	530000	USD
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	3111000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	96329000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	108144000	USD
CY2017	us-gaap	Sec Schedule Iii Real Estate Writedown Or Reserve Amount SECScheduleIIIRealEstateWritedownOrReserveAmount	9490000	USD
CY2017Q3	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	493866000	USD
CY2016Q4	us-gaap	Secured Debt SecuredDebt	27837000	USD
CY2017Q4	us-gaap	Secured Debt SecuredDebt	183100000	USD
CY2016Q4	us-gaap	Senior Notes SeniorNotes	646844000	USD
CY2017Q4	us-gaap	Senior Notes SeniorNotes	944140000	USD
CY2016Q3	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	14302	shares
CY2017Q2	us-gaap	Shares Paid For Tax Withholding For Share Based Compensation SharesPaidForTaxWithholdingForShareBasedCompensation	450	shares
CY2015	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	985000	USD
CY2016	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	1389000	USD
CY2017	us-gaap	Stock Granted During Period Value Sharebased Compensation StockGrantedDuringPeriodValueSharebasedCompensation	1361000	USD
CY2015	us-gaap	Stock Issued1 StockIssued1	9132000	USD
CY2016	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2017	us-gaap	Stock Issued1 StockIssued1	0	USD
CY2015	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	14046000	USD
CY2017	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	493866000	USD
CY2015	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	172000	USD
CY2016	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	337000	USD
CY2017	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	264000	USD
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	1297449000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	956651000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	935004000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1330043000	USD
CY2016Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	0	USD
CY2017Q4	us-gaap	Temporary Equity Carrying Amount Including Portion Attributable To Noncontrolling Interests TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests	20496000	USD
CY2016Q4	us-gaap	Unsecured Debt UnsecuredDebt	547171000	USD
CY2017Q4	us-gaap	Unsecured Debt UnsecuredDebt	547852000	USD
CY2015	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2016	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	21000	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	20000	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	70700000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	71071000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	84653000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	70700000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	71050000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	84633000	shares
CY2017	us-gaap	Comparability Of Prior Year Financial Data ComparabilityOfPriorYearFinancialData	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Reclassifications.</font><font style="font-family:inherit;font-size:10pt;"> Certain reclassifications have been made to the prior years’ financial statements to conform to the current year’s presentation.</font></div></div>
CY2017	us-gaap	Revenue Recognition Leases Operating RevenueRecognitionLeasesOperating	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:16px;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Revenue Recognition.</font><font style="font-family:inherit;font-size:10pt;"> We recognize rental income from operating leases that contain fixed contractual rent changes on a straight line basis over the term of the lease agreements. We increased rental income by </font><font style="font-family:inherit;font-size:10pt;">$5,582</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">$2,691</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">$3,978</font><font style="font-family:inherit;font-size:10pt;"> to record revenue on a straight line basis during the years ended </font><font style="font-family:inherit;font-size:10pt;">December 31, 2017</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;">2016</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">2015</font><font style="font-family:inherit;font-size:10pt;">, respectively. Rents receivable include </font><font style="font-family:inherit;font-size:10pt;">$27,267</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">$21,686</font><font style="font-family:inherit;font-size:10pt;"> of straight line rent receivables at </font><font style="font-family:inherit;font-size:10pt;">December 31, 2017</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;">2016</font><font style="font-family:inherit;font-size:10pt;">, respectively.</font></div><div style="line-height:120%;padding-bottom:16px;text-indent:48px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Certain of our leases with government tenants provide the tenant the right to terminate its lease if its respective legislature or other funding authority does not appropriate the funding necessary for the government tenant to meet its lease obligations; we have determined the fixed non-cancelable lease term of these leases to be the fully executed term of the lease because we believe the occurrence of termination to be a remote contingency based on both our historical experience and our assessment of the likelihood of lease cancellation on a separate lease basis. </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%;padding-bottom:16px;text-indent:48px;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;"> Preparation of these financial statements in conformity with GAAP requires us to make estimates and assumptions that may affect the amounts reported in these consolidated financial statements and related notes. The actual results could differ from these estimates.</font></div></div>

Files In Submission

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R45.htm	Edgar Link	pending
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0001456772-18-000042-index.html	Edgar Link	pending
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exhibit231.htm	Edgar Link	pending
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Financial_Report.xlsx	Edgar Link	pending
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2017 Form 8-K Financial Statement

#000145677218000042 Filed on November 05, 2018

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$OPI OFFICE PROPERTIES INCOME TRUST Stock $opi

2017 Form 8-K Financial Statement

#000145677218000042 Filed on November 05, 2018

Income Statement

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$OPI
OFFICE PROPERTIES INCOME TRUST Stock $opi