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Note 4. Acquisition of Interwest Transfer Company, Inc. (Details 3) - Interwest Transfer Company, Inc. - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Revenues | $ 13,851 | $ 13,706
Net Income | $ 2,336 | $ 2,172
Basic earnings per share | $ .79 | $ 0.76
Diluted earnings per share | $ .77 | $ 0.74

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- Definition The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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