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Schedule II - Valuation and Qualifying Accounts (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Summary of Valuation Allowance [Table Text Block] |
|  | Balance at beginning of period |  |  | Charged to expenses |  |  | Adjustments to valuation accounts |  |  | Deductions |  |  | Balance at end of period |
Year Ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for uncollectable accounts (1) |  | $ | 24,175 |  |  | $ | 6,641 |  |  | $ | - |  |  | $ | (13,750 | ) |  | $ | 17,066 |
Allowance for deferred tax asset |  | $ | 95,126 |  |  | $ | - |  |  | $ | (40,971 | ) |  | $ | - |  |  | $ | 54,155 |
Year Ended December 31, 201 6 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for uncollectable accounts (1) |  | $ | 31,820 |  |  | $ | 7,982 |  |  | $ | - |  |  | $ | (15,627 | ) |  | $ | 24,175 |
Allowance for deferred tax asset |  | $ | 27,905 |  |  | $ | - |  |  | $ | 67,221 |  |  | $ | - |  |  | $ | 95,126 |
Year Ended December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for uncollectable accounts (1) |  | $ | 32,509 |  |  | $ | 11,174 |  |  | $ | - |  |  | $ | (11,863 | ) |  | $ | 31,820 |
Allowance for deferred tax asset |  | $ | 34,302 |  |  | $ | - |  |  | $ | (6,397 | ) |  | $ | - |  |  | $ | 27,905 |
(1) Includes allowances on accounts receivable and straight-line rents.

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- Definition Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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- References No definition available. + Details
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