- DefinitionFor presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.
 
+ ReferencesReference 1: http://www.xbrl.org/2003/role/presentationRef
 -Publisher FASB
 -Name Accounting Standards Codification
 -Topic 718
 -SubTopic 10
 -Section 50
 -Paragraph 2
 -Subparagraph (c)(1)(iv)(3)-(4)
 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901
 
+ Details
|  Name: | 
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod | 
|  Namespace Prefix: | 
us-gaap_ | 
|  Data Type: | 
xbrli:sharesItemType | 
|  Balance Type: | 
na | 
|  Period Type: | 
duration |