Note 6 - Leases - Supplement Financial Statement Disclosure (Details) - USD ($) $ in Thousands	Sep. 30, 2020		Dec. 31, 2019
Operating lease assets	$ 67,504	[1]	$ 71,466	[2]
Other liabilities	$ 52,418		$ 56,253
Weighted-average remaining lease term (Year)	5 years 7 months 2 days	[1]	5 years 8 months 26 days	[2]
Weighted-average discount rate	4.86%	[1]	5.71%	[2]
Accrued Expense [Member]
Accrued expenses	$ 16,490	[1]	$ 15,828	[2]
Other Liabilities [Member]
Other liabilities	52,418	[1]	56,253	[2]
Accrued Expense and Other Liabilities [Member]
Total operating lease liabilities	$ 68,908	[1]	$ 72,081	[2]

[1] Amounts exclude operating lease assets of $0.2 million, accrued expenses of less than $0.1 and other liabilities of less than $0.1 million that were classified as held for sale at September 30, 2020 (see Note 5).

[2] Amounts exclude operating lease assets of $0.3 million, accrued expenses of $0.2 million and other liabilities of $0.2 million that were classified as held for sale at December 31, 2019 (see Note 5).