2.4.0.8110 - Disclosure - Costs in Excess of Billings and Unbilled Receivablestruefalsefalse1false falsefalseP10_01_2012To06_30_2013http://www.sec.gov/CIK0000030831duration2012-10-01T00:00:002013-06-30T00:00:001true 1dysl_CostInExcessOfBillingsAbstractdysl_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Cost In Excess Of Billings [Abstract]2false 2dysl_CostInExcessOfBillingsTextBlockdysl_falsenadurationfalsefalsefalsefalsefalsefalsefalsefalseverboseLabel1falsefalsefalse00 <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 &#150; Costs in Excess of Billings and Unbilled Receivables</b></div> <div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt"> &#160;</div> <div style="clear:both; FONT-FAMILY:Times New Roman;FONT-SIZE: 10pt;MARGIN: 0pt 0px; FONT: 10pt Times New Roman, Times, Serif"> Costs in excess of billings and unbilled receivables relate to research and development contracts and consist of actual revenues earned under the contracts which have not yet been billed to customers.</div> </div> falsefalsefalsenonnum:textBlockItemTypenaRepresents the disclosure of cost incurred in excess of amount billed.No definition available.false0Dividend Add Back Due To Preferred Stock Conversion [Text Block]falseCosts in Excess of Billings and Unbilled ReceivablesUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.dynasilcorp.com/role/CostsInExcessOfBillingsAndUnbilledReceivables12