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Schedule II - VALUATION AND QUALIFYING ACCOUNTS (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Allowance for Tenant Receivables |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance, beginning of year | $ 2,337,000 | $ 2,011,000 | $ 1,910,000
Additions in allowance charged to expense | 0 | 4,817,000 | 3,782,000
Bad debts charged against allowance | (2,337,000) | (4,491,000) | (3,681,000)
Balance, end of year | 0 | 2,337,000 | 2,011,000
Allowance for Other Receivables |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance, beginning of year | 0 | 838,000 | 838,000
Additions in allowance charged to expense | 0 | 0 | 0
Bad debts charged against allowance | 0 | (838,000) | 0
Balance, end of year | $ 0 | $ 0 | $ 838,000

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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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- Definition Amount of decrease in valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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