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Note 16 - Unaudited Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Quarterly Financial Information [Table Text Block]

		First				Second				Third				Fourth
		Quarter				Quarter				Quarter				Quarter
2020

Revenues		$	1,286,663			$	1,002,512			$	1,178,568			$	1,268,197
Gross profit			234,501				192,331				212,452				236,183
Operating income			35,197				23,001				42,868				53,539
Income before income taxes			31,669				22,512				43,928				53,614
Net income		$	23,107			$	16,816			$	33,939			$	41,025

Earnings per share:
Basic		$	0.42			$	0.31			$	0.62			$	0.74
Diluted		$	0.41			$	0.30			$	0.60			$	0.72

2019

Revenues		$	1,348,317			$	1,544,561			$	1,599,265			$	1,317,704
Gross profit			256,916				269,506				264,768				234,438
Operating income			56,867				61,792				58,323				39,423
Income before income taxes			49,558				54,410				52,210				33,345
Net income		$	37,104			$	41,621			$	39,104			$	23,754

Earnings per share:
Basic		$	0.67			$	0.75			$	0.71			$	0.43
Diluted		$	0.65			$	0.74			$	0.70			$	0.42