Note 11 - Shareholders' Equity (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

Schedule of Stockholders Equity [Table Text Block]

	Common Stock																	Accumulated
	Shares Outstanding						$0.01 Par		Additional Pain-In			Treasury			Retained			Other Comprehensive
(in thousands)	Class A			Class B			Value		Capital			Stock			Earnings			Income			Total
Balance, December 31, 2018		28,710			8,290		$	458	$	370,025		$	(245,842	)	$	942,287		$	–		$	1,066,928
Stock options exercised and stock awards		59			–			1		1,230			–			–			–			1,231
Stock-based compensation related to stock options, restricted shares and employee stock purchase plan		–			–			–		8,836			–			–			–			8,836
Vesting of restricted share awards		–			226			2		(2,317	)		–			–			–			(2,315	)
Issuance of common stock under employee stock purchase plan		57			–			1		1,680			–			–			–			1,681
Common stock repurchases		(639	)		(53	)		–		–			(26,048	)		–			–			(26,048	)
Dividend Class A common stock		–			–			–		–			–			(3,389	)		–			(3,389	)
Dividend Class B common stock		–			–			–		–			–			(991	)		–			(991	)
Other comprehensive income		–			–			–		–			–			–			384			384
Net income		–			–			–		–			–			37,104			–			37,104
Balance, March 31, 2019		28,187			8,463		$	462	$	379,454		$	(271,890	)	$	975,011		$	384		$	1,083,421
Stock options exercised and stock awards		87			–			–		1,745			–			–			–			1,745
Stock-based compensation related to stock options, restricted shares and employee stock purchase plan		–			–			–		4,258			–			–			–			4,258
Vesting of restricted share awards		–			–			–		(517	)		–			–			–			(517	)
Issuance of common stock under employee stock purchase plan		–			–			–		–			–			–			–			–
Common stock repurchases		(251	)		(67	)		–		–			(12,062	)		–			–			(12,062	)
Dividend Class A common stock		–			–			–		–			–			(3,387	)		–			(3,387	)
Dividend Class B common stock		–			–			–		–			–			(1,050	)		–			(1,050	)
Other comprehensive income		–			–			–		–			–			–			(505	)		(505	)
Net income		–			–			–		–			–			41,621			–			41,621
Balance, June 30, 2019		28,023			8,396		$	462	$	384,940		$	(283,952	)	$	1,012,195		$	(121	)	$	1,113,524
Stock options exercised and stock awards		36			–			–		904			–			–			–			904
Stock-based compensation related to stock options, restricted shares and employee stock purchase plan		–			–			–		2,709			–			–			–			2,709
Vesting of restricted share awards		–			–			–		–			–			–			–			–
Issuance of common stock under employee stock purchase plan		60			–			1		1,806			–			–			–			1,807
Common stock repurchases		(313	)		(112	)		–		–			(16,089	)		–			–			(16,089	)
Dividend Class A common stock		–			–			–		–			–			(3,637	)		–			(3,637	)
Dividend Class B common stock		–			–			–		–			–			(1,124	)		–			(1,124	)
Other comprehensive income		–			–			–		–			–			–			55			55
Net income		–			–			–		–			–			39,104			–			39,104
Balance, September 30, 2019		27,806			8,284		$	463	$	390,359		$	(300,041	)	$	1,046,538		$	(66	)	$	1,137,253

	Common Stock
	Shares Outstanding						$0.01 Par		Additional Paid-In			Treasury			Retained
(in thousands)	Class A			Class B			Value		Capital			Stock			Earnings			Total
Balance, December 31, 2017		31,345			8,469		$	454	$	348,044		$	(120,682	)	$	812,557		$	1,040,373
Stock options exercised and stock awards		30			–			–		766			–			–			766
Stock-based compensation related to stock options, restricted shares and employee stock purchase plan		–			–			–		7,893			–			–			7,893
Vesting of restricted share awards		1			226			2		(1,621	)		–			–			(1,619	)
Issuance of common stock under employee stock purchase plan		41			–			1		1,353			–			–			1,354
Common stock repurchases		(834	)		(72	)		–		–			(38,137	)		–			(38,137	)
Net income		–			–			–		–			–			21,039			21,039
Balance, March 31, 2018		30,583			8,623		$	457	$	356,435		$	(158,819	)	$	833,596		$	1,031,669
Stock options exercised and stock awards		64			–			–		1,184			–			–			1,184
Stock-based compensation related to stock options, restricted shares and employee stock purchase plan		–			–			–		5,949			–			–			5,949
Vesting of restricted share awards		–			1			–		(128	)		–			–			(128	)
Common stock repurchases		–			(194	)		–		–			(7,985	)		–			(7,985	)
Net income		–			–			–		–			–			29,389			29,389
Balance, June 30, 2018		30,647			8,430		$	457	$	363,440		$	(166,804	)	$	862,985		$	1,060,078
Stock options exercised and stock awards		32			–			–		630			–			–			630
Stock-based compensation related to stock options, restricted shares and employee stock purchase plan		–			–			–		2,008			–			–			2,008
Issuance of common stock under employee stock purchase plan		43			–			1		1,576			–			–			1,577
Common stock repurchases		(220	)		(71	)		–		–			(12,107	)		–			(12,107	)
Dividend Class A common stock		–			–			–		–			–			(3,683	)		(3,683	)
Dividend Class B common stock		–			–			–		–			–			(1,009	)		(1,009	)
Net income		–			–			–		–			–			41,665			41,665
Balance, September 30, 2018		30,502			8,359		$	458	$	367,654		$	(178,911	)	$	899,958		$	1,089,159