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Note 17 - Unaudited Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

Schedule of Quarterly Financial Information [Table Text Block]

		First Quarter				Second Quarter				Third Quarter				Fourth Quarter
2015

Revenues		$	1,193,535			$	917,878			$	1,294,076			$	1,161,819
Gross profit			193,622				207,633				208,008				175,684
Operating income			30,329				35,560				36,030				19,357
Income before income taxes			27,388				31,962				32,462				15,991
Net income		$	16,781			$	19,576			$	19,883			$	9,813

Earnings per share:
Basic		$	0.42			$	0.49			$	0.49			$	0.24
Diluted		$	0.42			$	0.48			$	0.48			$	0.24

2014

Revenues		$	958,667			$	1,182,461			$	1,241,022			$	1,345,206
Gross profit			165,925				193,349				198,739				198,033
Operating income			22,746				34,932				41,018				43,045
Income before income taxes			19,615				32,389				38,329				40,210
Net income		$	12,014			$	19,838			$	23,478			$	24,627

Earnings per share:
Basic		$	0.31			$	0.50			$	0.59			$	0.62
Diluted		$	0.30			$	0.49			$	0.57			$	0.60