Percentage Of Common Stock Available For Purchase Through Warrants

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- Definition

Percentage of Ownership Interest Related Parties

+ References

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- Definition

Schedule Of Activities And Transactions Associated With Related Cost [Line Items]

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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- Definition

Face amount or stated value per share of common stock.

+ 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(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

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No definition available.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585

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- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

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No definition available.

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Pearson Investment - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Dec. 22, 2014	Jan. 22, 2013	Apr. 29, 2017	May 02, 2015	Apr. 30, 2016
Schedule Of Activities And Transactions Associated With Related Cost [Line Items]
Aggregate purchase price, paid by shares			2,737,290	2,737,290
Common stock, par value			$ 0.001		$ 0.001
Pearson Plc
Schedule Of Activities And Transactions Associated With Related Cost [Line Items]
Aggregate purchase price paid in cash		$ 89,500
Percentage of non controlling interest		5.00%
Percentage of common membership interest owned by Pearson PLC		78.20%
Preferred membership Interest		16.80%
Warrants purchase		5.00%
Pearson Plc \| Common Stock
Schedule Of Activities And Transactions Associated With Related Cost [Line Items]
Aggregate purchase price, paid by shares	602,927
Common stock, par value	$ 0.001
Pearson Plc \| Series B Preferred
Schedule Of Activities And Transactions Associated With Related Cost [Line Items]
Aggregate purchase price paid in cash	$ 13,750