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Organization and Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Dec. 31, 2015
Debt Instrument [Line Items] |  |  |
Interest costs capitalized | $ 511,000 | $ 390,000 |
Restricted cash and cash held in escrow | 43,136,000 |  | $ 601,000
Revolving credit facility borrowing capacity | 650,000,000 |  |
Mortgages [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt costs | 226,000 |  | 226,000
Debt costs accumulated amortization | 103,000 |  | 93,000
Notes Payable to Banks [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt costs | 17,782,000 |  | 17,782,000
Debt costs accumulated amortization | $ 5,109,000 |  | $ 4,704,000

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- Definition Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 + Details
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