- DefinitionNumber of share options (or share units) exercised during the current period.
 
+ ReferencesReference 1: http://www.xbrl.org/2003/role/disclosureRef
 -Publisher FASB
 -Name Accounting Standards Codification
 -Topic 718
 -SubTopic 10
 -Section 50
 -Paragraph 2
 -Subparagraph (c)(1)(iv)(02)
 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901
Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
 -Publisher FASB
 -Name Accounting Standards Codification
 -Topic 505
 -SubTopic 10
 -Section S99
 -Paragraph 1
 -Subparagraph (SX 210.3-04)
 -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770
Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
 -Publisher FASB
 -Name Accounting Standards Codification
 -Topic 210
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 -Section S99
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 -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682
Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
 -Publisher FASB
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 -Section S99
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 -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682
Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
 -Publisher FASB
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 -Topic 505
 -SubTopic 10
 -Section 50
 -Paragraph 2
 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644
 
+ Details
|  Name: | 
us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised | 
|  Namespace Prefix: | 
us-gaap_ | 
|  Data Type: | 
xbrli:sharesItemType | 
|  Balance Type: | 
na | 
|  Period Type: | 
duration |