Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Schedule of Estimated Useful Lives of Assets [Table Text Block]

Type	Estimated Useful Life (Years)
Buildings	15	to	45
Building improvements	5	to	20
Furniture, fixtures, and equipment	3	to	25
Leasehold improvements	Shorter of useful lives or the terms of the leases