Note 15 - Noncontrolling Interests and Redeemable Noncontrolling Interests - Redemption Value of the Redeemable Noncontrolling Interests (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020		Dec. 31, 2019		Dec. 31, 2018
Balance		$ 17,943		$ 23,682
Income		1,022		358
Distributions		(1,021)		(345)
Redemption of redeemable units (1)	[1]	0		(5,752)
Adjustment to estimated redemption value (2)		(2,160)	[2]	0	[2]	$ 7,521
Balance		$ 15,784		$ 17,943		$ 23,682

[1] During 2019, the Company redeemed all 5,223,313 Class A Units for a total redemption price of $5.8 million.

[2] During the year ended December 31, 2020, the Company recorded an adjustment of $2.2 million to the estimated redemption fair market value of this noncontrolling interest in accordance with the provisions of the joint venture agreement and ASC 480 – Accounting for Redeemable Equity Instruments. The Company assesses the fair market value of this noncontrolling interest on a recurring basis and determined that its valuation was classified within Level 3 of the fair value hierarchy. The estimated fair market value of this noncontrolling interest was based upon a discounted cash flow model, for which a capitalization rate of 5.50% and discount rate of 6.50% were utilized in the model based upon unobservable rates that the Company believes to be within a reasonable range of current market rates. No adjustment to fair value was required during the year ended December 31, 2019.