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Summary of Significant Accounting Policies (Details 2) (USD $) | 0 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 09, 2014 | Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2015 | Mar. 31, 2014 | Jun. 30, 2014
Concentration of revenues |  |  |  |  |  |
Revenues |  | $ 244,623,000 us-gaap_Revenues | $ 235,222,000 us-gaap_Revenues | $ 712,640,000 us-gaap_Revenues | $ 687,507,000 us-gaap_Revenues |
Period of contract entered to provide academic curriculum | 3 years |  |  |  |  |
Inventories |  |  |  |  |  |
Increase in provision for excess and obsolete inventory |  |  |  |  | 6,100,000 lrn_IncreaseDecreaseInInventoryReserve |
Excess and obsolete inventory reserve |  | 1,600,000 us-gaap_InventoryValuationReserves |  | 1,600,000 us-gaap_InventoryValuationReserves |  | 9,100,000 us-gaap_InventoryValuationReserves
Accounts Receivable |  |  |  |  |  |
Concentration of revenues |  |  |  |  |  |
Concentration risk (as a percent) |  |  |  | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember |  | 9.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_AccountsReceivableMember
Customer A | Sales Revenue, Services, Net | Customer Concentration Risk |  |  |  |  |  |
Concentration of revenues |  |  |  |  |  |
Revenues |  | $ 34,400,000 us-gaap_Revenues / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueServicesNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = lrn_CustomerAMember | $ 33,400,000 us-gaap_Revenues / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueServicesNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = lrn_CustomerAMember | $ 95,000,000 us-gaap_Revenues / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueServicesNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = lrn_CustomerAMember | $ 90,000,000 us-gaap_Revenues / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_SalesRevenueServicesNetMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CustomerConcentrationRiskMember / us-gaap_MajorCustomersAxis = lrn_CustomerAMember |

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