Note 4 - Revenue Recognition (Details Textual) - USD ($) |
1 Months Ended | 3 Months Ended | 6 Months Ended | |
|---|---|---|---|---|
Oct. 31, 2019 |
Dec. 31, 2019 |
Dec. 31, 2019 |
Jun. 30, 2019 |
|
| Contract with Customer, Liability, Total | $ 45,900,000 | $ 45,900,000 | $ 56,700,000 | |
| Contract with Customer, Liability, Revenue Recognized | $ 7,000,000 | $ 53,600,000 | ||
| Annual Fee Per Member [Member] | ||||
| Membership, Annual Fee Amount Per Member | $ 100 | |||
| Contract with Customer, Satisfaction of Performance Obligation Period | 1 year |
| X | ||||||||||
- Definition Represents the satisfaction of performance obligation period to transfer good or service to customer for which consideration from customer has been received or is due. No definition available.
|
| X | ||||||||||
- Definition The annual fee amount per member of membership program. No definition available.
|
| X | ||||||||||
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Details
|