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v2.4.1.9

Commitments and Contingencies (Details) |  | 6 Months Ended |  | 6 Months Ended | 0 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 31, 2014 USD ($) | Dec. 31, 2014 Foreign USD ($) | Mar. 31, 2014 Foreign USD ($) | Mar. 31, 2014 Foreign BRL | Dec. 31, 2014 Minimum Foreign USD ($) | Dec. 31, 2014 Maximum Foreign USD ($) | Feb. 03, 2014 Commonwealth of Kentucky Pending Litigation defendant
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Non-cancelable purchase commitments | $ 102,400,000 us-gaap_PurchaseCommitmentRemainingMinimumAmountCommitted |  |  |  |  |  |
Number of co-defendants |  |  |  |  |  |  | 2 extr_LossContingencyNumberofCodefendants / us-gaap_LitigationCaseAxis = extr_CommonwealthofKentuckyMember / us-gaap_LitigationStatusAxis = us-gaap_PendingLitigationMember
Value of tax credits disallowed |  |  | 1,500,000 extr_IncomeTaxExaminationDisallowedTaxCredits / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember | 3,443,914 extr_IncomeTaxExaminationDisallowedTaxCredits / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember |  |  |
Estimated interest in penalties |  | 9,000,000 us-gaap_IncomeTaxExaminationPenaltiesAndInterestExpense / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember |  |  |  |  |
Potential total tax liability |  | $ 4,300,000 us-gaap_IncomeTaxExaminationEstimateOfPossibleLoss / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember |  |  | $ 0 us-gaap_IncomeTaxExaminationEstimateOfPossibleLoss / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / us-gaap_RangeAxis = us-gaap_MinimumMember | $ 9,000,000 us-gaap_IncomeTaxExaminationEstimateOfPossibleLoss / us-gaap_IncomeTaxAuthorityAxis = us-gaap_ForeignCountryMember / us-gaap_RangeAxis = us-gaap_MaximumMember |

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- Definition Estimated amount of loss resulting from an adverse tax position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition Minimum amount to be expended to satisfy the terms of arrangements in which the entity has agreed to expend funds to procure goods or services, excluding long-term purchase commitments or unconditional purchase obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.25) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 25 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 17 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.17) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.(a)(19)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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