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Earnings Per Share | 6 Months Ended
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Mar. 31, 2018
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share Basic income (loss) per share is calculated by dividing net income (loss) by the weighted-average number of shares outstanding during the period. Diluted income per share adjusts the basic income per share for the effects of any potentially dilutive instruments, only in periods in which the Company has net income and such effects are dilutive under the treasury stock method. Basic and diluted income (loss) per share is calculated using unrounded numbers. The Company reported net income for the three months ended March 31, 2018, but a net loss for the remaining periods presented. Accordingly, for the periods with a net loss, all common stock equivalents were excluded from the computation of diluted loss per share because inclusion would have resulted in anti-dilution. For the three and six months ended March 31, 2018, 0.3 million and 1.4 million shares related to nonvested stock-based compensation awards, respectively, were excluded from our calculation of diluted income (loss) per share as a result of their anti-dilutive effect. For both the three and six months ended March 31, 2017, 1.6 million shares related to nonvested stock-based compensation awards were excluded from our calculation of diluted income per share as a result of their anti-dilutive effect.
|  | Three Months Ended March 31, |  | Six Months Ended March 31,
(In thousands) |  | 2018 |  | 2017 |  | 2018 |  | 2017
Basic shares |  | 32,140 |  |  | 31,969 |  |  | 32,097 |  |  | 31,931 |
Shares issuable upon vesting of restricted stock |  | 466 |  |  | — |  |  | — |  |  | — |
Shares issuable upon exercise of options |  | 115 |  |  | — |  |  | — |  |  | — |
Diluted shares |  | 32,721 |  |  | 31,969 |  |  | 32,097 |  |  | 31,931 |

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=65016374&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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