- DefinitionPeriod from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
Reference 1: http://www.xbrl.org/2003/role/exampleRef
 -Publisher FASB
 -Name Accounting Standards Codification
 -Topic 718
 -SubTopic 10
 -Section 50
 -Paragraph 2
 -Subparagraph (a)(2)
 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901
| Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod | 
| Namespace Prefix: | us-gaap_ | 
| Data Type: | xbrli:durationItemType | 
| Balance Type: | na | 
| Period Type: | duration |