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Acquisitions - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 04, 2020	Oct. 01, 2019
Mathway, LLC
Business Acquisition [Line Items]
Acquired intangible assets	$ 30,320
Weighted-Average Amortization Period (in months)	75 months
Thinkful, Inc
Business Acquisition [Line Items]
Acquired intangible assets		$ 16,360
Weighted-Average Amortization Period (in months)		50 months
Trade name | Mathway, LLC
Business Acquisition [Line Items]
Acquired intangible assets	$ 520
Weighted-Average Amortization Period (in months)	18 months
Trade name | Thinkful, Inc
Business Acquisition [Line Items]
Acquired intangible assets		$ 4,430
Weighted-Average Amortization Period (in months)		48 months
Domain names | Mathway, LLC
Business Acquisition [Line Items]
Acquired intangible assets	$ 220
Weighted-Average Amortization Period (in months)	18 months
Domain names | Thinkful, Inc
Business Acquisition [Line Items]
Acquired intangible assets		$ 330
Weighted-Average Amortization Period (in months)		48 months
Customer lists | Mathway, LLC
Business Acquisition [Line Items]
Acquired intangible assets	$ 6,220
Weighted-Average Amortization Period (in months)	48 months
Content library | Thinkful, Inc
Business Acquisition [Line Items]
Acquired intangible assets		$ 6,940
Weighted-Average Amortization Period (in months)		60 months
Developed technology | Mathway, LLC
Business Acquisition [Line Items]
Acquired intangible assets	$ 23,360
Weighted-Average Amortization Period (in months)	84 months
Developed technology | Thinkful, Inc
Business Acquisition [Line Items]
Acquired intangible assets		$ 4,660
Weighted-Average Amortization Period (in months)		36 months

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- Definition

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+ References

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-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
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