2.4.0.8080600 - Disclosure - Warranty Reserves (Tables)truefalsefalse1false falsefalsec20130501to20130731http://www.sec.gov/CIK0000354813duration2013-05-01T00:00:002013-07-31T00:00:001true 1us-gaap_ProductWarrantiesDisclosuresAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Warranty Reserves [Abstract]2false 2us-gaap_ScheduleOfProductWarrantyLiabilityTableTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalselabel1falsefalsefalse00<div style="font-family: 'Times New Roman', Times, serif; font-size: 10pt;"><div style="text-align: left; text-indent: 0pt; display: block; font-family: Times New Roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">Estimated warranty costs are accrued as revenues are recognized.&#160;Included in the warranty cost accruals are costs for basic warranties on products sold. A summary of product warranty reserve activity for the three months ended July 31, 2013 is as follows:</div><div style="text-indent: 0pt; display: block;"><br /></div><div style="text-align: left;"><table cellpadding="0" cellspacing="0" style="width: 100%; font-family: times new roman; font-size: 10pt;"><tr><td align="left" valign="bottom"><div style="text-align: left; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">(Amounts in thousands)</div></td><td align="left" valign="bottom" style="display: inline; font-family: times new roman; font-size: 10pt;">&#160; </td><td align="left" colspan="2" valign="bottom" style="display: inline; font-family: times new roman; font-size: 10pt;">&#160;</td><td align="left" valign="bottom" style="display: inline; font-family: times new roman; font-size: 10pt;">&#160; </td></tr><tr bgcolor="#cceeff"><td align="left" valign="bottom" style="width: 88%;"><div style="text-align: left; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">Balance at May 1, 2013</div></td><td align="left" valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;">&#160; </td><td align="left" valign="bottom" style="width: 1%;"><div style="text-align: left; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">$</div></td><td align="right" valign="bottom" style="width: 9%;"><div style="text-align: right; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">139</div></td><td align="left" valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;">&#160; </td></tr><tr bgcolor="white"><td align="left" valign="bottom" style="width: 88%;"><div style="text-align: left; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">Additional reserves</div></td><td align="left" valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;">&#160; </td><td align="left" valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;">&#160; </td><td align="right" valign="bottom" style="width: 9%;"><div style="text-align: right; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">180</div></td><td align="left" valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;">&#160; </td></tr><tr bgcolor="#cceeff"><td align="left" valign="bottom" style="width: 88%;"><div style="text-align: left; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">Warranty reserve expense adjustments</div></td><td align="left" valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;">&#160; </td><td align="left" valign="bottom" style="width: 1%; display: inline; font-family: times new roman; font-size: 10pt;">&#160; </td><td align="right" valign="bottom" style="width: 9%;"><div style="text-align: right; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">(9</div></td><td align="left" valign="bottom" style="width: 1%;"><div style="text-align: left; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">)</div></td></tr><tr bgcolor="white"><td align="left" valign="bottom" style="padding-bottom: 2px; width: 88%;"><div style="text-align: left; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">Charges incurred</div></td><td align="left" valign="bottom" style="padding-bottom: 2px; width: 1%; font-family: times new roman; font-size: 10pt;">&#160; </td><td align="left" valign="bottom" style="border-bottom: black 2px solid; width: 1%; font-family: times new roman; font-size: 10pt;">&#160; </td><td align="right" valign="bottom" style="border-bottom: black 2px solid; width: 9%;"><div style="text-align: right; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">(54</div></td><td align="left" valign="bottom" style="padding-bottom: 2px; width: 1%;"><div style="text-align: left; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">)</div></td></tr><tr bgcolor="#cceeff"><td align="left" valign="bottom" style="padding-bottom: 4px; width: 88%;"><div style="text-align: left; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">Balance at July 31, 2013</div></td><td align="left" valign="bottom" style="padding-bottom: 4px; width: 1%; font-family: times new roman; font-size: 10pt;">&#160; </td><td align="left" valign="bottom" style="border-bottom: black 4px double; width: 1%;"><div style="text-align: left; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">$</div></td><td align="right" valign="bottom" style="border-bottom: black 4px double; width: 9%;"><div style="text-align: right; text-indent: 0pt; display: block; font-family: times new roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">256</div></td><td align="left" valign="bottom" style="padding-bottom: 4px; width: 1%; font-family: times new roman; font-size: 10pt;">&#160; </td></tr></table></div><div style="text-align: left; text-indent: 0pt; display: block; font-family: Times New Roman; margin-left: 0pt; font-size: 10pt; margin-right: 0pt;">&#160;</div></div>falsefalsefalsenonnum:textBlockItemTypenaTabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 false0Product warranty reserve activityfalseWarranty Reserves (Tables)UnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://ilts.com/role/WarrantyReservesTables12