2.4.0.8109 - Disclosure - Earnings (loss) Per Sharetruefalsefalse1false falsefalseP01_01_2013To06_30_2013http://www.sec.gov/CIK0001000683duration2013-01-01T00:00:002013-06-30T00:00:001true 1us-gaap_EarningsPerShareAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Earnings Per Share [Abstract]2false 2us-gaap_EarningsPerShareTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00 <div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif "> <div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"> <b>Note 4- Earnings (loss) Per Share</b></div> <div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.5in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif" align="justify">&#160;</div> <div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;TEXT-INDENT: 0.5in; MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif" align="justify">Earnings (loss) per share is calculated in accordance with ASC Topic 260 &#8220;Earnings Per Share,&#8221; which provides for the calculation of &#8220;basic&#8221; and &#8220;diluted&#8221; earnings (loss) per share. Basic earnings (loss) per share includes no dilution and is computed by dividing net earnings by the weighted average number of common shares outstanding for the period.&#160; Diluted earnings (loss) per share reflect, in periods in which they have a dilutive effect, the effect of common shares issuable upon exercise of stock options. The diluted share base excludes incremental shares of <font style=" FONT-SIZE: 10pt">1,022</font> and <font style=" FONT-SIZE: 10pt"> 1,458</font> related to stock options for the three and six month periods ended June 30, 2013, respectively, and <font style=" FONT-SIZE: 10pt"><font style=" FONT-SIZE: 10pt"> 1,151</font></font> shares related to stock options for both the three and six month periods ended June 30, 2012. These shares were excluded due to their antidilutive effect.</div> </div> falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for earnings per share.Reference 1: 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 2: 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=7655603&loc=d3e1278-109256 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=7655603&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=32703322&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=26872669&loc=d3e20235-122688 false0Earnings Per Share [Text Block]falseEarnings (loss) Per ShareUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.blondertongue.com/role/EarningsLossPerShare12