<SEC-DOCUMENT>0000003499-21-000011-index.html : 20210513
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<ACCEPTANCE-DATETIME>20210513163909
ACCESSION NUMBER:		0000003499-21-000011
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		17
CONFORMED PERIOD OF REPORT:	20210513
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20210513
DATE AS OF CHANGE:		20210513

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALEXANDERS INC
		CENTRAL INDEX KEY:			0000003499
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				510100517
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-06064
		FILM NUMBER:		21920251

	BUSINESS ADDRESS:	
		STREET 1:		210 ROUTE 4 EAST
		CITY:			PARAMUS
		STATE:			NJ
		ZIP:			07652
		BUSINESS PHONE:		201-587-8541

	MAIL ADDRESS:	
		STREET 1:		210 ROUTE 4 EAST
		CITY:			PARAMUS
		STATE:			NJ
		ZIP:			07652
</SEC-HEADER>
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<TYPE>8-K
<SEQUENCE>1
<FILENAME>alx-20210513.htm
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</DOCUMENT> <DOCUMENT> <TYPE>EX-101.SCH <SEQUENCE>3 <FILENAME>alx-20210513.xsd <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT <TEXT> Document 3 - file: alx-20210513.xsd
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</DOCUMENT> <DOCUMENT> <TYPE>EXCEL <SEQUENCE>12 <FILENAME>Financial_Report.xlsx <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 12 - file: Financial_Report.xlsx
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</DOCUMENT> <DOCUMENT> <TYPE>ZIP <SEQUENCE>18 <FILENAME>0000003499-21-000011-xbrl.zip <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 18 - file: 0000003499-21-000011-xbrl.zip
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