Note 6 - Leases (Details Textual) - USD ($) $ in Thousands  | 
3 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Jun. 30, 2020  | 
Jun. 30, 2021  | 
Jun. 30, 2020  | 
[1] | Jun. 30, 2019  | 
||||
| Repayments of Rent Deferrals | $ 2,400 | |||||||
| Accrued Rent, Current | 300 | |||||||
| Operating Lease, Cost | $ 32,400 | |||||||
| Sublease Income | 2,100 | |||||||
| Short-term Lease Commitment, Amount | 300 | |||||||
| Lessee, Operating Lease, Lease Not yet Commenced, Payments, Due | 4,400 | |||||||
| Right-of-Use Asset Obtained in Exchange for Finance Lease Liability | $ 1,311 | [1] | $ 87 | $ 0 | ||||
| COVID-19 Pandemic [Member] | ||||||||
| Rent Deferrals | $ 2,700 | |||||||
| Minimum [Member] | ||||||||
| Lessee, Finance Lease, Term of Contract (Year) | 3 years | |||||||
| Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year) | 7 years | |||||||
| Maximum [Member] | ||||||||
| Lessee, Finance Lease, Term of Contract (Year) | 5 years | |||||||
| Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract (Year) | 10 years | |||||||
  | ||||||||