Note 6 - Leases - Supplement Financial Statement Disclosure (Details) - USD ($) $ in Thousands	Mar. 31, 2020		Dec. 31, 2019
Operating lease assets	$ 68,718	[1]	$ 71,466	[2]
Other liabilities	$ 54,985		$ 56,253
Weighted-average remaining lease term (Year)	6 years 25 days	[1]	5 years 8 months 26 days	[2]
Weighted-average discount rate	5.61%	[1]	5.71%	[2]
Accrued Expense [Member]
Accrued expenses	$ 14,532	[1]	$ 15,828	[2]
Other Liabilities [Member]
Other liabilities	54,985	[1]	56,253	[2]
Accrued Expense and Other Liabilities [Member]
Total operating lease liabilities	$ 69,517	[1]	$ 72,081	[2]

[1] Amounts exclude operating lease assets of $0.1 million and other liabilities of less than $0.1 million that were classified as held for sale at March 31, 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).