Note 11 - Equity-based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Share-based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

	Years Ended December 31,
	2020					2019					2018
	Stock Awards			Weighted Average Award Date Fair Value		Stock Awards			Weighted Average Award Date Fair Value		Stock Awards			Weighted Average Award Date Fair Value
Outstanding, beginning of year		1,034,964		$	23.20		1,143,205		$	23.26		1,428,878		$	21.53
Period Activity:
Restricted stock units awarded		420,377			19.87		325,321			20.02		281,567			24.13
Performance stock units awarded		131,755			22.96		146,367			22.78		219,943			23.25
Restricted shares distributed		—			—		(76,686	)		18.26		—			—
Restricted stock units distributed		(297,322	)		20.50		(237,416	)		18.83		(312,182	)		17.47
Performance stock units distributed		(71,541	)		28.18		(111,155	)		25.85		(296,909	)		21.55
Restricted stock units forfeited		(93,696	)		18.17		(74,075	)		22.09		(90,896	)		21.79
Performance stock units forfeited		(80,930	)		27.19		(80,597	)		25.30		(87,196	)		25.95
Outstanding, end of year		1,043,607		$	22.40		1,034,964		$	23.20		1,143,205		$	23.26

Share-based Payment Arrangement, Outstanding Award, Activity, Excluding Option [Table Text Block]

	Years Ended December 31,
	2020					2019					2018
	Deferred Stock Units			Weighted Average Award Date Fair Value		Deferred Stock Units			Weighted Average Award Date Fair Value		Deferred Stock Units			Weighted Average Award Date Fair Value
Outstanding, beginning of year		253,340		$	20.71		287,350		$	20.80		269,977		$	20.14
Period Activity:
Awarded		70,426			14.59		50,174			19.64		45,681			23.72
Distributed		(59,297	)		21.66		(84,184	)		20.38		(28,308	)		19.22
Outstanding, end of year		264,469		$	18.87		253,340		$	20.71		287,350		$	20.80

Share-based Payment Arrangement, Option, Activity [Table Text Block]

	Years Ended December 31,
	2019					2018
	Shares			Weighted Average Exercise Price		Shares			Weighted Average Exercise Price
Outstanding, beginning of year		52,783		$	18.11		126,680		$	23.06
Exercised		(52,783	)		18.11		—			—
Canceled/Expired		—			—		(73,897	)		26.60
Outstanding, end of year		—		$	—		52,783		$	18.11
Exercisable, end of year		—		$	—		52,783		$	18.11

Cash Proceeds Received and Tax Benefit from Share-based Payment Awards [Table Text Block]

	Years Ended December 31,
	2019		2018
Amount received from stock option exercises	$	956	$	—
Total intrinsic value of stock option exercises (1)		129		—
Tax expense (benefit) of stock option exercises recorded in income tax expense		312		(1,556	)
Aggregate intrinsic value of outstanding stock options		—		—
Aggregate intrinsic value of exercisable stock options		—		—