Represents the number of customers in which the entity has a concentration of risk.

No definition available.

Name:	lrn_ConcentrationRiskNumberOfCustomers
Namespace Prefix:	lrn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The duration of contracts providing access to curriculum via the entity's Web site. The entity recognizes revenues over the term of the contract.

+ References

No definition available.

+ Details

Name:	lrn_ContractsForAccessToCurriculumTerm
Namespace Prefix:	lrn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the percentage of impact on total revenue due to aggregate funding estimates differed from actual reimbursements.

+ References

No definition available.

+ Details

Name:	lrn_PercentageOfImpactOnTotalRevenue
Namespace Prefix:	lrn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the reduction in revenue attributable to school operating losses at schools where the reporting entity provides turnkey management services.

+ References

No definition available.

+ Details

Name:	lrn_RevenueReductionSchoolOperatingLosses
Namespace Prefix:	lrn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

Name:	lrn_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix:	lrn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13531-108611

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13537-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045

+ Details

Name:	us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=lrn_PrimaryObligorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueServicesNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ProductOrServiceAxis=lrn_ManagedSchoolsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Summary of Significant Accounting Policies - Revenue Recognition (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2016
Summary of Significant Accounting Policies
Revenues	$ 256,314	$ 253,252	$ 254,872	$ 251,314	$ 238,874	$ 232,864	$ 217,211	$ 228,785	$ 1,015,752	$ 917,734	$ 888,519
Percentage of impact on total revenue										0.40%	0.30%	0.10%
Reduction in school operating losses included in the entity's revenue									$ 54,700	$ 66,700	$ 61,000
Concentration risk (as a percent)									10.00%	10.00%	10.00%
Minimum
Summary of Significant Accounting Policies
Duration of contracts providing access to curriculum via the entity's Web site									1 year
Maximum
Summary of Significant Accounting Policies
Duration of contracts providing access to curriculum via the entity's Web site									2 years
Primary Obligor
Summary of Significant Accounting Policies
Revenues									$ 342,700	$ 314,800	$ 292,000
Revenue \| Customer Concentration Risk
Summary of Significant Accounting Policies
Number of customers with concentration									1	0	0
Revenue \| Customer Concentration Risk \| Managed Schools
Summary of Significant Accounting Policies
Concentration risk (as a percent)									88.00%	85.00%		83.00%