XML 42 R31.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Reconciliation of Weighted Average Shares Outstanding and Share Repurchases (Tables) | 6 Months Ended
--- | ---
Oct. 31, 2018
Reconciliation of Weighted Average Shares Outstanding and Share Repurchases [Abstract] |
Reconciliation of Shares used in Computation of Earnings Per Share | A reconciliation of the shares used in the computation of earnings per share follows:
| Three Months Ended October 31, |  | Six Months Ended October 31,
| 2018 |  | 2017 |  | 2018 |  | 2017
Weighted average shares outstanding |  | 57,426 |  |  | 57,013 |  |  | 57,451 |  |  | 57,100
Less: Unvested restricted shares |  | (47) |  |  | (138) |  |  | (59) |  |  | (152)
Shares used for basic earnings per share |  | 57,379 |  |  | 56,875 |  |  | 57,392 |  |  | 56,948
Dilutive effect of stock options and other stock awards |  | 491 |  |  | 679 |  |  | 563 |  |  | 685
Shares used for diluted earnings per share |  | 57,870 |  |  | 57,554 |  |  | 57,955 |  |  | 57,633

X
- References No definition available. + Details
Name: | jwa_ReconciliationOfWeightedAverageSharesOutstandingAndShareRepurchasesAbstract
Namespace Prefix: | jwa_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
Name: | us-gaap_ScheduleOfWeightedAverageNumberOfSharesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration