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Note 1 - Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

Schedule of Weighted Average Number of Shares [Table Text Block]

		Three Months Ended								Nine Months Ended
		September 30,								September 30,
		2018				2017				2018				2017
Weighted-average shares outstanding-basic			87,765				71,636				88,191				71,777
Common stock equivalents for stock options and restricted stock			800				818				619				714
Weighted-average shares outstanding-diluted			88,565				72,454				88,810				72,491

Property, Plant and Equipment [Table Text Block]

										Estimated
		September 30,				December 31,				Useful Lives
		2018				2017				(in years)
Property and equipment:
Land		$	51,878			$	50,458
Buildings and improvements			159,024				156,924				7	to	40
Equipment			532,422				511,878				3	to	20
			743,324				719,260
Accumulated depreciation			(399,521	)			(368,602	)
Total property and equipment, net		$	343,803			$	350,658

Schedule of Disposal of Assets and Purchase of Property and Equipment [Table Text Block]

		Three Months Ended								Nine Months Ended
		September 30								September 30
		2018				2017				2018				2017
Gain (loss) on disposal of assets, net:
Proceeds from sale of assets		$	112			$	22			$	216			$	90,972
Proceeds from Repack			4,392				-				6,238				-
Net book value of assets disposed			(932	)			(1,682	)			(1,267	)			(15,833	)
Total		$	3,572			$	(1,660	)		$	5,187			$	75,139
Purchase of property and equipment:
Recurring purchases - operations										$	16,098			$	20,983
Repack											17,256				443
Repack related											1,540				-
Total										$	34,894			$	21,426

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-Name Accounting Standards Codification
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