- DefinitionTabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
 -Topic 718
 -SubTopic 10
 -Subparagraph (f)(2)
 -Name Accounting Standards Codification
 -Paragraph 2
 -Section 50
 -Publisher FASB
 -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2
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| Namespace Prefix: | us-gaap_ | 
| Data Type: | dtr-types:textBlockItemType | 
| Balance Type: | na | 
| Period Type: | duration |