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Note 7 - Results of Operations by Quarter (Unaudited) - Summary of Operations by Quarter (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2016
Revenue from Contract with Customer, Including Assessed Tax | $ 10,106,000 | $ 11,007,000 | $ 9,338,000 | $ 10,252,000 | $ 10,914,000 |  | $ 10,201,000 | $ 10,279,000 | $ 9,990,000 | $ 40,703,000 | $ 41,384,000 | $ 41,612,000
Costs and expenses | 13,639,000 | 13,716,000 | 13,711,000 | 13,697,000 | 14,329,000 |  | 13,834,000 | 13,545,000 | 12,843,000 |  |  |
Loss from operations | (3,533,000) | (2,709,000) | (4,373,000) | (3,445,000) | (3,415,000) |  | (3,633,000) | (3,266,000) | (2,853,000) |  |  |
Other income, net | 879,000 | 1,027,000 | 4,041,000 | 1,334,000 | 1,205,000 | [1] | 817,000 | 2,005,000 | 1,072,000 |  |  |
Other-than-temporary impairment losses on investments | (4,560,000) |  |  |  |  |  |  |  |  | (4,560,000) | 0 |
Loss before taxes | (7,214,000) | (1,682,000) | (332,000) | (2,111,000) |  |  |  |  |  | (11,339,000) | (8,068,000) | (2,978,000)
Benefit from income taxes | 1,880,000 | 710,000 | 100,000 | 16,850,000 | 1,135,000 |  | 1,465,000 | 4,240,000 | 310,000 | 19,540,000 | 7,150,000 | 1,935,000
Net income (loss) | $ (5,334,000) | $ (972,000) | $ (232,000) | $ 14,739,000 | $ (1,075,000) |  | $ (1,351,000) | $ 2,979,000 | $ (1,471,000) | $ 8,201,000 | $ (918,000) | $ (1,043,000)
Basic and diluted net (loss) income per share (in dollars per share) | $ (3.86) | $ (0.70) | $ (0.17) | $ 10.67 | $ (0.77) |  | $ (0.98) | $ 2.16 | $ (1.07) | $ 5.94 | $ (0.66) | $ (0.76)
Income (loss) before taxes |  |  |  |  | $ (2,210,000) |  | $ (2,816,000) | $ (1,261,000) | $ (1,781,000) | $ (11,339,000) | $ (8,068,000) | $ (2,978,000)
[1] | Includes other-than-temporary impairment losses on investments of $376,000

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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=109260490&loc=d3e1337-109256 + Details
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- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045 + Details
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