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Tenant and Other Receivables: (Details) - USD ($) | Dec. 31, 2015 | Dec. 31, 2014 | Mar. 17, 2014
--- | --- | --- | ---
Components of tenant and other receivables, net |  |  |
Allowance for doubtful accounts | $ 3,072,000 | $ 3,234,000 |
Deferred rent receivables due to straight-line rent adjustments | 60,790,000 | 57,278,000 |
Accrued percentage rents |  |  |
Components of tenant and other receivables, net |  |  |
Accounts receivable | 10,940,000 | $ 13,436,000 |
Note receivable, 6.5% interest, maturing March 17, 2018 |  |  |
Components of tenant and other receivables, net |  |  |
Notes receivable interest rate (as a percent) |  |  | 6.50%
Notes receivable | $ 6,351,000 |  | $ 6,500,000
Note Receivable, 5% interest, maturing December 31, 2014 |  |  |
Components of tenant and other receivables, net |  |  |
Notes receivable interest rate (as a percent) |  |  | 5.00%
Notes receivable |  |  | $ 3,103,000

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- Definition The valuation allowance as of the balance sheet date to reduce the gross amount of receivables to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a),5) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition The cumulative difference between the rental payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense over the term of the leased property, by the lessor or lessee, respectively. Such receivable is reduced by allowances attributable to, for instance, credit risk associated with a lessee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 35 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453741&loc=d3e40879-112712 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39927-112707 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39896-112707 + Details
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