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Earnings per Share | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Earnings per Share | (6) Earnings per Share. The following details the computations of the basic and diluted earnings per common share (in thousands, except per share amounts):
| Three Months ended |  | Nine Months ended
| September 30, |  | September 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Weighted average common shares |  |  |  |  |  |  |
outstanding during the period |  |  |  |  |  |  |
- shares used for basic |  |  |  |  |  |  |
earnings per common share |  | 10,062 |  |  |  | 10,004 |  |  |  | 10,037 |  |  |  | 9,967 |
Common shares issuable under |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
share based payment plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
which are potentially dilutive |  | 73 |  |  |  | 62 |  |  |  | 73 |  |  |  | 68 |
Common shares used for diluted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
earnings per common share |  | 10,135 |  |  |  | 10,066 |  |  |  | 10,110 |  |  |  | 10,035 |
Net income attributable to the Company | $ | 2,224 |  |  |  | 25,391 |  |  |  | 123,766 |  |  |  | 28,547 |
Basic earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic | $ | 0.22 |  |  |  | 2.54 |  |  |  | 12.33 |  |  |  | 2.86 |
Diluted | $ | 0.22 |  |  |  | 2.52 |  |  |  | 12.24 |  |  |  | 2.84 |
For the three and nine months ended September 30, 2018, no shares attributable to outstanding stock options were excluded from the calculation of diluted earnings per share because their inclusion would have been anti-dilutive. For the three and nine months ended September 30, 2017, 13,610 and 22,422 shares attributable to outstanding stock options were excluded from the calculation of diluted earnings per share because their inclusion would have been anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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