$SUI
SUN COMMUNITIES INC Stock $sui

$sui Overview Financials Valuation SEC Filings Company Website

2021 Q1 Form 10-Q Financial Statement

#000091259321000126 Filed on April 27, 2021

Income Statement

Concept	2021 Q1	2020 Q1
Revenue	$442.0M	$310.3M
YoY Change	42.44%	7.99%
Cost Of Revenue	$211.6M	$30.03M
YoY Change	604.58%	2.58%
Gross Profit	$230.4M	$280.3M
YoY Change	-17.79%	8.61%
Gross Profit Margin	52.13%	90.32%
Selling, General & Admin	$39.60M	$29.34M
YoY Change	34.96%	16.38%
% of Gross Profit	17.19%	10.47%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$123.9M	$83.69M
YoY Change	48.05%	9.32%
% of Gross Profit	53.78%	29.86%
Operating Expenses	$162.9M	$29.34M
YoY Change	455.2%	16.38%
Operating Profit	$67.50M	$250.9M
YoY Change	-73.1%	7.77%
Interest Expense	-$40.40M	-$53.10M
YoY Change	-23.92%	51.28%
% of Operating Profit	-59.85%	-21.16%
Other Income/Expense, Net	-$500.0K	-$972.0K
YoY Change	-48.56%	1350.75%
Pretax Income	$22.80M	$36.19M
YoY Change	-37.0%	4.69%
Income Tax	-$400.0K	$300.0K
% Of Pretax Income	-1.75%	0.83%
Net Earnings	$24.80M	-$16.09M
YoY Change	-254.17%	-146.86%
Net Earnings / Revenue	5.61%	-5.18%
Basic Earnings Per Share	$0.23	-$0.17
Diluted Earnings Per Share	$0.23	-$0.17
COMMON SHARES
Basic Shares Outstanding	107.9M shares	92.41M shares
Diluted Shares Outstanding	108.2M shares	92.41M shares

Balance Sheet

Concept	2021 Q1	2020 Q1
SHORT-TERM ASSETS
Cash & Short-Term Investments	$248.0M	$450.3M
YoY Change	-44.93%	521.62%
Cash & Equivalents	$120.2M	$394.7M
Short-Term Investments	$127.8M	$55.60M
Other Short-Term Assets
YoY Change
Inventory	$43.00M	$64.00M
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets	$270.0M	$516.0M
YoY Change	-47.67%	108.91%
LONG-TERM ASSETS
Property, Plant & Equipment	$10.00B	$7.346B
YoY Change	36.16%	12.69%
Goodwill	$438.8M
YoY Change
Intangibles
YoY Change
Long-Term Investments	$62.20M	$56.00M
YoY Change	11.07%	9.8%
Other Assets
YoY Change
Total Long-Term Assets	$11.18B	$7.693B
YoY Change	45.38%	12.28%
TOTAL ASSETS
Total Short-Term Assets	$270.0M	$516.0M
Total Long-Term Assets	$11.18B	$7.693B
Total Assets	$11.45B	$8.209B
YoY Change	39.53%	15.64%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$160.0M	$111.0M
YoY Change	44.14%
Accrued Expenses	$47.00M	$26.00M
YoY Change	80.77%	36.84%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$302.0M	$213.0M
YoY Change	41.78%	147.67%
LONG-TERM LIABILITIES
Long-Term Debt	$4.422B	$3.931B
YoY Change	12.49%	13.88%
Other Long-Term Liabilities	$378.0M	$203.0M
YoY Change	86.21%	-34.09%
Total Long-Term Liabilities	$4.800B	$4.134B
YoY Change	16.11%	9.95%
TOTAL LIABILITIES
Total Short-Term Liabilities	$302.0M	$213.0M
Total Long-Term Liabilities	$4.800B	$4.134B
Total Liabilities	$5.102B	$4.346B
YoY Change	17.38%	12.99%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock	$1.118M	$933.0K
YoY Change	19.83%	7.86%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$5.992B	$3.725B
YoY Change
Total Liabilities & Shareholders Equity	$11.45B	$8.209B
YoY Change	39.53%	15.64%

Cashflow Statement

Concept	2021 Q1	2020 Q1
OPERATING ACTIVITIES
Net Income	$24.80M	-$16.09M
YoY Change	-254.17%	-146.86%
Depreciation, Depletion And Amortization	$123.9M	$83.69M
YoY Change	48.05%	9.32%
Cash From Operating Activities	$220.5M	$118.5M
YoY Change	86.06%	14.9%
INVESTING ACTIVITIES
Capital Expenditures	-$141.8M	-$24.40M
YoY Change	481.15%	-91.26%
Acquisitions	$141.7M	$24.44M
YoY Change	479.81%
Other Investing Activities	-$144.2M	-$144.9M
YoY Change	-0.48%
Cash From Investing Activities	-$285.9M	-$169.3M
YoY Change	68.84%	-56.86%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$537.6M
YoY Change
Debt Paid & Issued, Net	$14.80M	$134.2M
YoY Change	-88.97%	-33.2%
Cash From Financing Activities	$93.00M	$411.1M
YoY Change	-77.38%	57.45%
NET CHANGE
Cash From Operating Activities	$220.5M	$118.5M
Cash From Investing Activities	-$285.9M	-$169.3M
Cash From Financing Activities	$93.00M	$411.1M
Net Change In Cash	$27.60M	$359.9M
YoY Change	-92.33%	-1381.41%
FREE CASH FLOW
Cash From Operating Activities	$220.5M	$118.5M
Capital Expenditures	-$141.8M	-$24.40M
Free Cash Flow	$362.3M	$142.9M
YoY Change	153.51%	-62.63%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021Q1	dei	Amendment Flag AmendmentFlag	false
CY2021Q1	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021Q1	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q1
CY2021Q1	dei	Entity Central Index Key EntityCentralIndexKey	0000912593
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021Q1	dei	Document Type DocumentType	10-Q
CY2021Q1	dei	Document Quarterly Report DocumentQuarterlyReport	true
CY2021Q1	dei	Document Period End Date DocumentPeriodEndDate	2021-03-31
CY2021Q1	dei	Document Transition Report DocumentTransitionReport	false
CY2021Q1	dei	Entity Registrant Name EntityRegistrantName	SUN COMMUNITIES INC
CY2021Q1	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	MD
CY2021Q1	dei	Entity File Number EntityFileNumber	1-12616
CY2021Q1	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	38-2730780
CY2021Q1	dei	Entity Address Address Line1 EntityAddressAddressLine1	27777 Franklin Rd,
CY2021Q1	dei	Entity Address Address Line2 EntityAddressAddressLine2	Suite 200,
CY2021Q1	dei	Entity Address City Or Town EntityAddressCityOrTown	Southfield,
CY2021Q1	dei	Entity Address State Or Province EntityAddressStateOrProvince	MI
CY2021Q1	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	48034
CY2021Q1	dei	City Area Code CityAreaCode	248
CY2021Q1	dei	Local Phone Number LocalPhoneNumber	208-2500
CY2021Q1	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value
CY2021Q1	dei	Trading Symbol TradingSymbol	SUI
CY2021Q1	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021Q1	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021Q1	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021Q1	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021Q1	dei	Entity Small Business EntitySmallBusiness	false
CY2021Q1	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021Q1	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	111828638	shares
CY2021Q1	us-gaap	Land Land	2190762000	USD
CY2020Q4	us-gaap	Land Land	2119364000	USD
CY2021Q1	sui	Real Estate Investment Property Land Improvements And Buildings RealEstateInvestmentPropertyLandImprovementsAndBuildings	8664199000	USD
CY2020Q4	sui	Real Estate Investment Property Land Improvements And Buildings RealEstateInvestmentPropertyLandImprovementsAndBuildings	8480597000	USD
CY2021Q1	us-gaap	Rental Properties RentalProperties	652559000	USD
CY2020Q4	us-gaap	Rental Properties RentalProperties	637603000	USD
CY2021Q1	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	491735000	USD
CY2020Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	447039000	USD
CY2021Q1	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	11999255000	USD
CY2020Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	11684603000	USD
CY2021Q1	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	2088105000	USD
CY2020Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	1968812000	USD
CY2021Q1	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	9911150000	USD
CY2020Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	9715791000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	120174000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	92641000	USD
CY2021Q1	us-gaap	Marketable Securities MarketableSecurities	127821000	USD
CY2020Q4	us-gaap	Marketable Securities MarketableSecurities	124726000	USD
CY2021Q1	us-gaap	Inventory Finished Homes InventoryFinishedHomes	43242000	USD
CY2020Q4	us-gaap	Inventory Finished Homes InventoryFinishedHomes	46643000	USD
CY2021Q1	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	249009000	USD
CY2020Q4	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	221650000	USD
CY2021Q1	us-gaap	Goodwill Goodwill	438842000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	428833000	USD
CY2021Q1	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	300554000	USD
CY2020Q4	us-gaap	Intangible Assets Net Including Goodwill IntangibleAssetsNetIncludingGoodwill	305611000	USD
CY2021Q1	us-gaap	Other Assets OtherAssets	263417000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	270691000	USD
CY2021Q1	us-gaap	Assets Assets	11454209000	USD
CY2020Q4	us-gaap	Assets Assets	11206586000	USD
CY2021Q1	us-gaap	Secured Debt SecuredDebt	3430420000	USD
CY2020Q4	us-gaap	Secured Debt SecuredDebt	3444967000	USD
CY2021Q1	us-gaap	Line Of Credit LineOfCredit	917603000	USD
CY2020Q4	us-gaap	Line Of Credit LineOfCredit	1242197000	USD
CY2021Q1	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	95076000	USD
CY2020Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	86988000	USD
CY2021Q1	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	280301000	USD
CY2020Q4	us-gaap	Contract With Customer Liability ContractWithCustomerLiability	187730000	USD
CY2021Q1	us-gaap	Accounts Payable Current And Noncurrent AccountsPayableCurrentAndNoncurrent	160072000	USD
CY2020Q4	us-gaap	Accounts Payable Current And Noncurrent AccountsPayableCurrentAndNoncurrent	148435000	USD
CY2021Q1	us-gaap	Other Liabilities OtherLiabilities	148128000	USD
CY2020Q4	us-gaap	Other Liabilities OtherLiabilities	134650000	USD
CY2021Q1	us-gaap	Liabilities Liabilities	5101512000	USD
CY2020Q4	us-gaap	Liabilities Liabilities	5314879000	USD
CY2021Q1	sui	Temporary Equity Consolidated Vie TemporaryEquityConsolidatedVIE	26604000	USD
CY2020Q4	sui	Temporary Equity Consolidated Vie TemporaryEquityConsolidatedVIE	28469000	USD
CY2021Q1	sui	Temporary Equity TemporaryEquity	261059000	USD
CY2020Q4	sui	Temporary Equity TemporaryEquity	264379000	USD
CY2021Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2020Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2021Q1	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	180000000	shares
CY2020Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	180000000	shares
CY2021Q1	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	111835000	shares
CY2021Q1	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	111835000	shares
CY2020Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	107626000	shares
CY2020Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	107626000	shares
CY2021Q1	us-gaap	Common Stock Value CommonStockValue	1118000	USD
CY2020Q4	us-gaap	Common Stock Value CommonStockValue	1076000	USD
CY2021Q1	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	7618128000	USD
CY2020Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	7087658000	USD
CY2021Q1	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	4033000	USD
CY2020Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	3178000	USD
CY2021Q1	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	1631044000	USD
CY2020Q4	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	1566636000	USD
CY2021Q1	us-gaap	Stockholders Equity StockholdersEquity	5992235000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	5525276000	USD
CY2021Q1	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	82502000	USD
CY2020Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	85968000	USD
CY2021Q1	us-gaap	Noncontrolling Interest In Variable Interest Entity NoncontrollingInterestInVariableInterestEntity	16901000	USD
CY2020Q4	us-gaap	Noncontrolling Interest In Variable Interest Entity NoncontrollingInterestInVariableInterestEntity	16084000	USD
CY2021Q1	us-gaap	Minority Interest MinorityInterest	99403000	USD
CY2020Q4	us-gaap	Minority Interest MinorityInterest	102052000	USD
CY2021Q1	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6091638000	USD
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5627328000	USD
CY2021Q1	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	11454209000	USD
CY2020Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	11206586000	USD
CY2021Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	330613000	USD
CY2020Q1	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	258349000	USD
CY2021Q1	sui	Revenue From Home Sales RevenueFromHomeSales	52199000	USD
CY2020Q1	sui	Revenue From Home Sales RevenueFromHomeSales	40587000	USD
CY2021Q1	sui	Ancillary Revenue AncillaryRevenue	50612000	USD
CY2020Q1	sui	Ancillary Revenue AncillaryRevenue	5103000	USD
CY2021Q1	us-gaap	Interest Income Operating InterestIncomeOperating	2631000	USD
CY2020Q1	us-gaap	Interest Income Operating InterestIncomeOperating	2350000	USD
CY2021Q1	sui	Brokeragecommissionsandotherincomenet Brokeragecommissionsandotherincomenet	5960000	USD
CY2020Q1	sui	Brokeragecommissionsandotherincomenet Brokeragecommissionsandotherincomenet	3913000	USD
CY2021Q1	us-gaap	Revenues Revenues	442015000	USD
CY2020Q1	us-gaap	Revenues Revenues	310302000	USD
CY2021Q1	us-gaap	Cost Of Other Property Operating Expense CostOfOtherPropertyOperatingExpense	103553000	USD
CY2020Q1	us-gaap	Cost Of Other Property Operating Expense CostOfOtherPropertyOperatingExpense	69834000	USD
CY2021Q1	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	22408000	USD
CY2020Q1	us-gaap	Real Estate Tax Expense RealEstateTaxExpense	17176000	USD
CY2021Q1	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	41590000	USD
CY2020Q1	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	34039000	USD
CY2021Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	45431000	USD
CY2020Q1	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	6682000	USD
CY2021Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	38203000	USD
CY2020Q1	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	25349000	USD
CY2021Q1	us-gaap	Loss From Catastrophes LossFromCatastrophes	2414000	USD
CY2020Q1	us-gaap	Loss From Catastrophes LossFromCatastrophes	606000	USD
CY2021Q1	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	1232000	USD
CY2020Q1	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	0	USD
CY2021Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	123304000	USD
CY2020Q1	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	83689000	USD
CY2021Q1	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2020Q1	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-3279000	USD
CY2021Q1	us-gaap	Interest Expense Debt InterestExpenseDebt	39517000	USD
CY2020Q1	us-gaap	Interest Expense Debt InterestExpenseDebt	32416000	USD
CY2021Q1	us-gaap	Interest Expense Other InterestExpenseOther	1036000	USD
CY2020Q1	us-gaap	Interest Expense Other InterestExpenseOther	1041000	USD
CY2021Q1	us-gaap	Costs And Expenses CostsAndExpenses	418688000	USD
CY2020Q1	us-gaap	Costs And Expenses CostsAndExpenses	274111000	USD
CY2021Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	23327000	USD
CY2020Q1	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	36191000	USD
CY2021Q1	sui	Remeasurement Of Marketable Securities RemeasurementOfMarketableSecurities	3661000	USD
CY2020Q1	sui	Remeasurement Of Marketable Securities RemeasurementOfMarketableSecurities	-28647000	USD
CY2021Q1	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	25000	USD
CY2020Q1	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-17479000	USD
CY2021Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1099000	USD
CY2020Q1	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-972000	USD
CY2021Q1	sui	Losson Remeasurementof Notes Receivable LossonRemeasurementofNotesReceivable	376000	USD
CY2020Q1	sui	Losson Remeasurementof Notes Receivable LossonRemeasurementofNotesReceivable	-2112000	USD
CY2021Q1	sui	Distributions From Affiliate DistributionsFromAffiliate	1171000	USD
CY2020Q1	sui	Distributions From Affiliate DistributionsFromAffiliate	52000	USD
CY2021Q1	sui	Losson Remeasurementof Investment LossonRemeasurementofInvestment	104000	USD
CY2020Q1	sui	Losson Remeasurementof Investment LossonRemeasurementofInvestment	-2191000	USD
CY2021Q1	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	-229000	USD
CY2020Q1	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	450000	USD
CY2021Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-147000	USD
CY2020Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-130000	USD
CY2021Q1	us-gaap	Profit Loss ProfitLoss	27941000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	-15478000	USD
CY2021Q1	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	-2864000	USD
CY2020Q1	sui	Preferredreturnto Series A1preferred O Punits PreferredreturntoSeriesA1preferredOPunits	-1570000	USD
CY2021Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	-295000	USD
CY2020Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	962000	USD
CY2021Q1	us-gaap	Net Income Loss NetIncomeLoss	24782000	USD
CY2020Q1	us-gaap	Net Income Loss NetIncomeLoss	-16086000	USD
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	107932000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	92410000	shares
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	108161000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92411000	shares
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.23
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.17
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.23
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.17
CY2021Q1	us-gaap	Profit Loss ProfitLoss	27941000	USD
CY2020Q1	us-gaap	Profit Loss ProfitLoss	-15478000	USD
CY2021Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	895000	USD
CY2020Q1	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	7300000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	28836000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-22778000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	335000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	-1268000	USD
CY2021Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	28501000	USD
CY2020Q1	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-21510000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	220490000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	118513000	USD
CY2021Q1	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	151979000	USD
CY2020Q1	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	132759000	USD
CY2021Q1	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	141755000	USD
CY2020Q1	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	24439000	USD
CY2021Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	17774000	USD
CY2020Q1	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	12612000	USD
CY2021Q1	sui	Issuanceofnotesandotherreceivables Issuanceofnotesandotherreceivables	7907000	USD
CY2020Q1	sui	Issuanceofnotesandotherreceivables Issuanceofnotesandotherreceivables	19903000	USD
CY2021Q1	sui	Repaymentof Notesand Other Receivables RepaymentofNotesandOtherReceivables	1207000	USD
CY2020Q1	sui	Repaymentof Notesand Other Receivables RepaymentofNotesandOtherReceivables	854000	USD
CY2021Q1	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	4510000	USD
CY2020Q1	us-gaap	Payments To Acquire Interest In Subsidiaries And Affiliates PaymentsToAcquireInterestInSubsidiariesAndAffiliates	6970000	USD
CY2021Q1	us-gaap	Proceeds From Divestiture Of Interest In Subsidiaries And Affiliates ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates	1192000	USD
CY2020Q1	us-gaap	Proceeds From Divestiture Of Interest In Subsidiaries And Affiliates ProceedsFromDivestitureOfInterestInSubsidiariesAndAffiliates	1275000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-285978000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-169330000	USD
CY2021Q1	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	522264000	USD
CY2020Q1	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	-7140000	USD
CY2021Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	442290000	USD
CY2020Q1	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	1163965000	USD
CY2021Q1	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	766260000	USD
CY2020Q1	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	763076000	USD
CY2021Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2020Q1	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	230000000	USD
CY2021Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	14799000	USD
CY2020Q1	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	134203000	USD
CY2021Q1	sui	Prepayment Penalty Debt PrepaymentPenaltyDebt	0	USD
CY2020Q1	sui	Prepayment Penalty Debt PrepaymentPenaltyDebt	3250000	USD
CY2021Q1	sui	Distributions To Stockholders Op Unit Holders And Preferred Op Unit Holders DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders	89792000	USD
CY2020Q1	sui	Distributions To Stockholders Op Unit Holders And Preferred Op Unit Holders DistributionsToStockholdersOpUnitHoldersAndPreferredOpUnitHolders	71859000	USD
CY2021Q1	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	701000	USD
CY2020Q1	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	3328000	USD
CY2021Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	93002000	USD
CY2020Q1	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	411109000	USD
CY2021Q1	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	19000	USD
CY2020Q1	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-382000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	27533000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	359910000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	92641000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	34830000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	120174000	USD
CY2020Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	394740000	USD
CY2021Q1	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	1154000	USD
CY2020Q1	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	2258000	USD
CY2021Q1	us-gaap	Interest Paid Net InterestPaidNet	39458000	USD
CY2020Q1	us-gaap	Interest Paid Net InterestPaidNet	32464000	USD
CY2021Q1	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	1036000	USD
CY2020Q1	us-gaap	Distributions On Mandatorily Redeemable Securities DistributionsOnMandatorilyRedeemableSecurities	1041000	USD
CY2021Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	-484000	USD
CY2020Q1	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	75000	USD
CY2021Q1	us-gaap	Dividends Dividends	8095000	USD
CY2020Q1	us-gaap	Dividends Dividends	4787000	USD
CY2021Q1	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	1150000	USD
CY2020Q1	us-gaap	Conversion Of Stock Amount Converted1 ConversionOfStockAmountConverted1	446000	USD
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2021Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2020	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2021Q1	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	3	segment
CY2021Q1	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2021Q1	us-gaap	Revenues Revenues	442015000	USD
CY2020Q1	us-gaap	Revenues Revenues	310302000	USD
CY2021Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	133962000	USD
CY2021Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory	160000	USD
CY2021Q1	sui	Business Combination Recognized Identifiable Assets Acquiredand Liabilities Assumed Current Assets Liabilities Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsLiabilitiesInventory	437000	USD
CY2021Q1	sui	Business Combination Recognized Identifiable Assets Acquiredand Liabilities Assumed Other Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherLiabilities	3719000	USD
CY2021Q1	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	130840000	USD
CY2021Q1	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	130840000	USD
CY2021Q1	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	130840000	USD
CY2021Q1	us-gaap	Business Acquisition Cost Of Acquired Entity Transaction Costs BusinessAcquisitionCostOfAcquiredEntityTransactionCosts	1800000	USD
CY2021Q1	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	1200000	USD
CY2020Q4	us-gaap	Number Of Units In Real Estate Property NumberOfUnitsInRealEstateProperty	45800	site
CY2020Q4	sui	Numberof Unitsin Real Estate Property Development Sites NumberofUnitsinRealEstatePropertyDevelopmentSites	109	development_site
CY2020Q4	sui	Number Of Marinas Owned NumberOfMarinasOwned	99	segment
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Property Plant And Equipment BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment	2339368000	USD
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory	9942000	USD
CY2020Q4	sui	Business Combination Recognized Identifiable Assets Acquiredand Liabilities Assumed Current Assets Liabilities Inventory BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedCurrentAssetsLiabilitiesInventory	694264000	USD
CY2020Q4	sui	Business Combination Recognized Identifiable Assets Acquiredand Liabilities Assumed Other Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedOtherLiabilities	-42231000	USD
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Net BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet	3001343000	USD
CY2020	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	1923855000	USD
CY2020Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Current Liabilities Long Term Debt BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesLongTermDebt	837800000	USD
CY2020	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	239688000	USD
CY2020	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	3001343000	USD
CY2020	us-gaap	Business Combination Integration Related Costs BusinessCombinationIntegrationRelatedCosts	23000000.0	USD
CY2020Q1	sui	Number Of Land Parcels Acquired NumberOfLandParcelsAcquired	8	landParcel
CY2020Q1	us-gaap	Payments To Acquire Land PaymentsToAcquireLand	9700000	USD
CY2020Q1	sui	Number Of Land Parcels Acquired Adjacent To Existing Communities NumberOfLandParcelsAcquiredAdjacentToExistingCommunities	7	landParcel
CY2020Q3	sui	Number Of Housing Sites Sold NumberOfHousingSitesSold	226	site
CY2021Q1	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	249009000	USD
CY2020Q4	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	221650000	USD
CY2021Q1	us-gaap	Receivable With Imputed Interest Net Amount ReceivableWithImputedInterestNetAmount	84100000	USD
CY2020Q1	us-gaap	Receivable With Imputed Interest Net Amount ReceivableWithImputedInterestNetAmount	85900000	USD
CY2021Q1	us-gaap	Receivable With Imputed Interest Net Amount ReceivableWithImputedInterestNetAmount	84109000	USD
CY2020Q4	us-gaap	Receivable With Imputed Interest Net Amount ReceivableWithImputedInterestNetAmount	85866000	USD
CY2021Q1	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	58300000	USD
CY2020Q4	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	52600000	USD
CY2021Q1	sui	Undrawn Funds On Loans UndrawnFundsOnLoans	14500000	USD
CY2021Q1	us-gaap	Contract With Customer Asset Reclassified To Receivable ContractWithCustomerAssetReclassifiedToReceivable	28600000	USD
CY2021Q1	sui	Other Receivables Storage And Lease Payments Marina OtherReceivablesStorageAndLeasePaymentsMarina	28200000	USD
CY2021Q1	sui	Other Receivables For Rent Water Sewer Usage OtherReceivablesForRentWaterSewerUsage	15900000	USD
CY2021Q1	sui	Allowance For Rent Water Sewer Usage Receivables AllowanceForRentWaterSewerUsageReceivables	5800000	USD
CY2021Q1	sui	Insurance Receivables InsuranceReceivables	13500000	USD
CY2021Q4	sui	Home Sale Proceeds HomeSaleProceeds	23600000	USD
CY2021Q4	sui	Other Receivables Storage And Lease Payments Marina OtherReceivablesStorageAndLeasePaymentsMarina	19200000	USD
CY2020Q4	sui	Other Receivables For Rent Water Sewer Usage OtherReceivablesForRentWaterSewerUsage	7100000	USD
CY2021Q4	sui	Allowance For Rent Water Sewer Usage Receivables AllowanceForRentWaterSewerUsageReceivables	7200000	USD
CY2021Q4	sui	Insurance Receivables InsuranceReceivables	13600000	USD
CY2021Q1	us-gaap	Goodwill Goodwill	438842000	USD
CY2021Q4	us-gaap	Goodwill Goodwill	428833000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	850675000	USD
CY2021Q1	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	111279000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	832720000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	98276000	USD
CY2021Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	12625000	USD
CY2020Q1	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3656000	USD
CY2021Q1	us-gaap	Equity Method Investments EquityMethodInvestments	62199000	USD
CY2020Q4	us-gaap	Equity Method Investments EquityMethodInvestments	59074000	USD
CY2021Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1171000	USD
CY2020Q1	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	52000	USD
CY2021Q1	sui	Variable Interest Entityasa Percentageof Consolidated Assets VariableInterestEntityasaPercentageofConsolidatedAssets	0.045	Rate
CY2020Q4	sui	Variable Interest Entityasa Percentageof Consolidated Assets VariableInterestEntityasaPercentageofConsolidatedAssets	0.041	Rate
CY2021Q1	sui	Variable Interest Entityasa Percentageof Consolidated Liabilities VariableInterestEntityasaPercentageofConsolidatedLiabilities	0.027	Rate
CY2020Q4	sui	Variable Interest Entityasa Percentageof Consolidated Liabilities VariableInterestEntityasaPercentageofConsolidatedLiabilities	0.020	Rate
CY2021Q1	sui	Vi Easa Percentageof Total Equity VIEasaPercentageofTotalEquity	0.010
CY2021Q1	us-gaap	Secured Debt SecuredDebt	3430420000	USD
CY2020Q4	us-gaap	Secured Debt SecuredDebt	3444967000	USD
CY2020Q4	us-gaap	Line Of Credit LineOfCredit	1242197000	USD
CY2021Q1	sui	Secured Debt And Other Borrowings SecuredDebtAndOtherBorrowings	4417935000	USD
CY2020Q4	sui	Secured Debt And Other Borrowings SecuredDebtAndOtherBorrowings	4757076000	USD
CY2021Q1	sui	Debtweightedaveragetomaturitylength Debtweightedaveragetomaturitylength	P9Y6M
CY2020	sui	Debtweightedaveragetomaturitylength Debtweightedaveragetomaturitylength	P9Y4M24D
CY2021Q1	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.03394	Rate
CY2020Q4	us-gaap	Debt Weighted Average Interest Rate DebtWeightedAverageInterestRate	0.03370	Rate
CY2021Q1	us-gaap	Secured Debt SecuredDebt	3400000000	USD
CY2018Q2	sui	Financial Instruments Subjectto Mandatory Redemption Rate Of Return FinancialInstrumentsSubjecttoMandatoryRedemptionRateOfReturn	0.060
CY2021Q1	sui	Financial Instruments Subjectto Mandatory Redemption Term FinancialInstrumentsSubjecttoMandatoryRedemptionTerm	P7Y
	us-gaap	Debt Instrument Convertible Number Of Equity Instruments DebtInstrumentConvertibleNumberOfEquityInstruments	1013819	shares
CY2021Q1	us-gaap	Long Term Debt LongTermDebt	180000000.0	USD
CY2020Q4	us-gaap	Long Term Debt LongTermDebt	6600000	USD
CY2021Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1100000000	USD
CY2021Q1	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	8050000	shares
CY2021Q1	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	140.00
CY2021Q1	sui	Sale Of Stock Number Of Shares Issued In Transaction Direct SaleOfStockNumberOfSharesIssuedInTransactionDirect	4000000	shares
CY2021Q1	sui	Sale Of Stock Number Of Shares Issued In Transaction Forward Equity Sales SaleOfStockNumberOfSharesIssuedInTransactionForwardEquitySales	4050000	shares
CY2021Q1	sui	Sale Of Stock Number Of Shares Issued In Transaction Direct SaleOfStockNumberOfSharesIssuedInTransactionDirect	4000000	shares
CY2021Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	537600000	USD
CY2021Q1	sui	Sale Of Stock Number Of Shares Issued In Transaction Forward Equity Sales SaleOfStockNumberOfSharesIssuedInTransactionForwardEquitySales	4050000	shares
CY2021Q1	sui	Net Proceeds From Forward Equity Offering NetProceedsFromForwardEquityOffering	544300000	USD
CY2020Q3	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	9200000	shares
CY2021Q1	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	139.50
CY2020Q2	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	4968000	shares
CY2020Q2	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	633100000	USD
	sui	Aggregate Valueof Sharestobe Issuedin Accordanceto Sales Agreement AggregateValueofSharestobeIssuedinAccordancetoSalesAgreement	450000000.0	USD
	sui	Commission Maximum Percentageof Gross Sales Price Per Share Accordingto Sales Agreement CommissionMaximumPercentageofGrossSalesPricePerShareAccordingtoSalesAgreement	0.020
	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	163800000	USD
CY2020Q2	sui	Temporary Equity Dividends For Term Two Percentage TemporaryEquityDividendsForTermTwoPercentage	0.030
CY2019Q3	sui	Variable Interest Entity Equity Interests Issued VariableInterestEntityEquityInterestsIssued	2400000	USD
CY2021Q1	sui	Number Of Share Based Compensation Plans NumberOfShareBasedCompensationPlans	2	numberOfPlans
CY2020Q1	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	69368	shares
CY2021Q1	sui	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Percent Expected To Vest SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest	0.655
CY2021Q1	sui	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Percent Expected To Vest SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest	0.655
CY2021Q1	sui	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Percent Expected To Vest SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest	0.655
CY2020Q1	sui	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Percent Expected To Vest SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsPercentExpectedToVest	0.756
CY2021Q1	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	3	segment
CY2021Q1	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	9911150000	USD
CY2020Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	9715791000	USD
CY2021Q1	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	120174000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	92641000	USD
CY2021Q1	us-gaap	Marketable Securities MarketableSecurities	127821000	USD
CY2020Q4	us-gaap	Marketable Securities MarketableSecurities	124726000	USD
CY2021Q1	us-gaap	Inventory Finished Homes InventoryFinishedHomes	43242000	USD
CY2020Q4	us-gaap	Inventory Finished Homes InventoryFinishedHomes	46643000	USD
CY2021Q1	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	249009000	USD
CY2020Q4	us-gaap	Accounts And Notes Receivable Net AccountsAndNotesReceivableNet	221650000	USD
CY2021Q1	us-gaap	Goodwill Goodwill	438842000	USD
CY2020Q4	us-gaap	Goodwill Goodwill	428833000	USD
CY2021Q1	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	300554000	USD
CY2020Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	305611000	USD
CY2021Q1	us-gaap	Other Assets OtherAssets	263417000	USD
CY2020Q4	us-gaap	Other Assets OtherAssets	270691000	USD
CY2021Q1	us-gaap	Assets Assets	11454209000	USD
CY2020Q4	us-gaap	Assets Assets	11206586000	USD
CY2021Q1	sui	Minimum Percent Of Income From Qualifying Sources To Allow For Real Estate Investment Trust Classification MinimumPercentOfIncomeFromQualifyingSourcesToAllowForRealEstateInvestmentTrustClassification	95
CY2021Q1	sui	Required Minimum Percent Of Taxable Income Distributed To Stock Holders RequiredMinimumPercentOfTaxableIncomeDistributedToStockHolders	90
CY2020Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2021Q1	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2021Q1	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	200000	USD
CY2020Q1	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	500000	USD
CY2021Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-147000.0	USD
CY2020Q1	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-130000.0	USD
CY2021Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	24782000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-16086000	USD
CY2021Q1	sui	Incomeloss Attributableto Common Stockholders Allocable To Non Vested Restricted Shares IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares	152000	USD
CY2020Q1	sui	Incomeloss Attributableto Common Stockholders Allocable To Non Vested Restricted Shares IncomelossAttributabletoCommonStockholdersAllocableToNonVestedRestrictedShares	-254000	USD
CY2021Q1	sui	Netincomeattributabletocommonshareholdersafterrestrictedstockallocation Netincomeattributabletocommonshareholdersafterrestrictedstockallocation	24630000	USD
CY2020Q1	sui	Netincomeattributabletocommonshareholdersafterrestrictedstockallocation Netincomeattributabletocommonshareholdersafterrestrictedstockallocation	-15832000	USD
CY2021Q1	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2020Q1	us-gaap	Amount Of Dilutive Securities Stock Options And Restrictive Stock Units AmountOfDilutiveSecuritiesStockOptionsAndRestrictiveStockUnits	0	USD
CY2021Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	24630000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-15832000	USD
CY2021Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	107932000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	92410000	shares
CY2021Q1	sui	Weighted Average Common Shares Outstanding Adjustment Common Share From Forward Sale WeightedAverageCommonSharesOutstandingAdjustmentCommonShareFromForwardSale	229000	shares
CY2020Q1	sui	Weighted Average Common Shares Outstanding Adjustment Common Share From Forward Sale WeightedAverageCommonSharesOutstandingAdjustmentCommonShareFromForwardSale	0	shares
CY2021Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2020Q1	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1000	shares
CY2021Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	108161000	shares
CY2020Q1	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	92411000	shares
CY2021Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.23
CY2020Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.17
CY2021Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.23
CY2020Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.17
CY2021Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	5714000	shares
CY2020Q1	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	4924000	shares
CY2021Q1	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	58286000	USD
CY2021Q1	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	58286000	USD
CY2020Q4	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	52638000	USD
CY2020Q4	us-gaap	Notes Receivable Fair Value Disclosure NotesReceivableFairValueDisclosure	52638000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	3879000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	208000	USD
CY2021Q1	sui	Operating And Finance Leases Liability Payments Remainderof Fiscal Year OperatingAndFinanceLeasesLiabilityPaymentsRemainderofFiscalYear	4087000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	4741000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	213000	USD
CY2021Q1	sui	Operating And Finance Leases Liability Payments Due Year Two OperatingAndFinanceLeasesLiabilityPaymentsDueYearTwo	4954000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4771000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	178000	USD
CY2021Q1	sui	Operating And Finance Leases Liability Payments Due Year Three OperatingAndFinanceLeasesLiabilityPaymentsDueYearThree	4949000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	5144000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	4063000	USD
CY2021Q1	sui	Operating And Finance Leases Liability Payments Due Year Four OperatingAndFinanceLeasesLiabilityPaymentsDueYearFour	9207000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	5175000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	0	USD
CY2021Q1	sui	Operating And Finance Leases Liability Payments Due Year Five OperatingAndFinanceLeasesLiabilityPaymentsDueYearFive	5175000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	55533000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	0	USD
CY2021Q1	sui	Operating And Finance Leases Liability Payments Dueafter Year Five OperatingAndFinanceLeasesLiabilityPaymentsDueafterYearFive	55533000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	79243000	USD
CY2021Q1	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	4662000	USD
CY2021Q1	sui	Operating And Finance Leases Liability Payment Due OperatingAndFinanceLeasesLiabilityPaymentDue	83905000	USD
CY2021Q1	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	32734000	USD
CY2021Q1	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	335000	USD
CY2021Q1	sui	Operating And Finance Leases Liability Undiscounted Excess Amount OperatingAndFinanceLeasesLiabilityUndiscountedExcessAmount	33069000	USD
CY2021Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	46509000	USD
CY2021Q1	us-gaap	Finance Lease Liability FinanceLeaseLiability	4327000	USD
CY2021Q1	sui	Operating And Finance Leases Liability OperatingAndFinanceLeasesLiability	50836000	USD
CY2021Q1	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	4368000	USD
CY2020Q4	us-gaap	Capital Leased Assets Gross CapitalLeasedAssetsGross	4350000	USD
CY2021Q1	sui	Rightof Use Asset Obtainedin Exchangefor New Operating Lease Liability RightofUseAssetObtainedinExchangeforNewOperatingLeaseLiability	59272000	USD
CY2020	sui	Rightof Use Asset Obtainedin Exchangefor New Operating Lease Liability RightofUseAssetObtainedinExchangeforNewOperatingLeaseLiability	48419000	USD
CY2021Q1	us-gaap	Below Market Lease Net BelowMarketLeaseNet	27426000	USD
CY2020Q4	us-gaap	Below Market Lease Net BelowMarketLeaseNet	27614000	USD
CY2021Q1	us-gaap	Capital Lease Obligations CapitalLeaseObligations	4327000	USD
CY2020Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	4334000	USD
CY2021Q1	us-gaap	Operating Lease Liability OperatingLeaseLiability	46509000	USD
CY2020Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	49964000	USD
CY2021Q1	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	6000	USD
CY2020Q1	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	-18000	USD
CY2021Q1	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	26000	USD
CY2020Q1	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	26000	USD
CY2021Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	2148000	USD
CY2020Q1	us-gaap	Operating Lease Cost OperatingLeaseCost	974000	USD
CY2021Q1	us-gaap	Lease Cost LeaseCost	3540000	USD
CY2020Q1	us-gaap	Lease Cost LeaseCost	1351000	USD
CY2021Q1	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P2Y5M4D
CY2021Q1	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P25Y10M24D
CY2021Q1	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0244
CY2021Q1	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0380
CY2021Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	945000	USD
CY2020Q1	us-gaap	Operating Lease Payments OperatingLeasePayments	590000	USD
CY2021Q1	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	33000	USD
CY2020Q1	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	8000	USD
CY2021Q1	sui	Operating And Finance Lease Payments OperatingAndFinanceLeasePayments	978000	USD
CY2020Q1	sui	Operating And Finance Lease Payments OperatingAndFinanceLeasePayments	598000	USD
CY2021Q1	sui	Percentof Operating Leases Where Companyisthe Lessor PercentofOperatingLeasesWhereCompanyistheLessor	0.95
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	8261000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	6951000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	5039000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	2090000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	1220000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	2628000	USD
CY2021Q4	us-gaap	Lessor Operating Lease Payments To Be Received LessorOperatingLeasePaymentsToBeReceived	26189000	USD
CY2021Q1	us-gaap	Lease Income LeaseIncome	3657000	USD
CY2020Q1	us-gaap	Lease Income LeaseIncome	311000	USD
CY2021Q1	us-gaap	Variable Lease Income VariableLeaseIncome	1028000	USD
CY2020Q1	us-gaap	Variable Lease Income VariableLeaseIncome	397000	USD
CY2020	sui	Transient Rv Revenue TransientRVRevenue	134700000	USD

Files In Submission

Name	View Source	Status
0000912593-21-000126-index-headers.html	Edgar Link	pending
0000912593-21-000126-index.html	Edgar Link	pending
0000912593-21-000126.txt	Edgar Link	pending
0000912593-21-000126-xbrl.zip	Edgar Link	pending
exhibit311-03312021ceocert.htm	Edgar Link	pending
exhibit312-03312021cfocert.htm	Edgar Link	pending
exhibit321-03312021ceoandc.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending
sui-20210331.htm	Edgar Link	pending
sui-20210331.xsd	Edgar Link	pending
sui-20210331_cal.xml	Edgar Link	unprocessable
sui-20210331_def.xml	Edgar Link	unprocessable
sui-20210331_htm.xml	Edgar Link	completed
sui-20210331_lab.xml	Edgar Link	unprocessable
sui-20210331_pre.xml	Edgar Link	unprocessable

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$SUI
SUN COMMUNITIES INC Stock $sui

2021 Q1 Form 10-Q Financial Statement

#000091259321000126 Filed on April 27, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SUI SUN COMMUNITIES INC Stock $sui

2021 Q1 Form 10-Q Financial Statement

#000091259321000126 Filed on April 27, 2021

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SUI
SUN COMMUNITIES INC Stock $sui