XML 50 R35.htm IDEA: XBRL DOCUMENT

Note 10 - Stock-based Compensation and Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Schedule Of Common Stock Shares Reserved For Issuance And Shares Available For Grant [Table Text Block]

		Year Ended December 31,
		2020				2019				2018
Shares of common stock reserved for issuance under the plans			3,973,228				3,973,228				3,973,228
Shares of common stock available for future grants			1,591,577				2,187,101				2,325,102

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

		Weighted-average				Time				Weight-average
		Grant-Date				Based				Grant Date				Performance
		Fair Value				Units				Fair Value				Based Units
Non-vested balance at December 31, 2017			24.41				1,157,646				—				—
Granted			24.58				455,063				26.04				63,365
Vested			24.84				(503,677	)			—				—
Cancelled/forfeited			27.15				(27,948	)			—				—
Non-vested balance at December 31, 2018			24.21				1,081,084				26.04				63,365
Granted			23.44				186,143				24.50				101,143
Vested			24.45				(784,868	)			—				—
Cancelled/forfeited			24.70				(78,591	)			24.50				(70,694	)
Non-vested balance at December 31, 2019			23.32				403,768				25.54				93,814
Granted			5.95				594,234				—				—
Vested			24.05				(265,919	)			26.04				(63,365	)
Non-vested balance at December 31, 2020			8.95				732,083				24.50				30,449

Schedule Of Allocated Share Based Compensation Expense Recognized Period Costs [Table Text Block]

		Year Ended December 31,
(In thousands)		2020				2019				2018
Grant date fair value of restricted stock units vested		$	6,395			$	19,193			$	12,513
Restricted stock unit compensation expense			5,117				19,603				13,406

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

		Weighted-								Weighted-								Weighted-
		average				Time				average								average
		Grant-Date				Based				Grant-Date				Series A				Grant-Date				Series B
		Fair Value				Shares				Fair Value				Warrants				Fair Value				Warrants
Non-vested balance at December 31, 2017		$	308.24				13,526				1.00				21,934				0.98				23,712
Vested			360.14				(8,223	)			1.00				(13,009	)			0.98				(14,064	)
Cancelled			240.39				(786	)			1.00				(1,275	)			0.98				(1,379	)
Non-vested balance at December 31, 2018		$	226.50				4,517				1.00				7,650				2.94				8,269
Vested			226.50				(4,517	)			1.00				(7,650	)			2.94				(8,269	)
Non-vested balance at December 31, 2019		$	—				—				—				—				—				—