Note 14 - Noncontrolling Interests - Redemption Value of the Redeemable Noncontrolling Interests (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Balance		$ 23,682		$ 16,143
Income		358		373
Distributions		(345)		(355)
Redemption of redeemable units	[1]	(5,752)		0
Adjustment to estimated redemption value		0	[2]	7,521	[2]	$ 0
Balance		$ 17,943		$ 23,682		$ 16,143

[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, 2018, the Company recorded an adjustment of $7.5 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 revalues 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 5.00% and discount rate of 6.00% 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.