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Note 6 - Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Long-term Debt Instruments [Table Text Block]

		201 7				201 6
		(in thousands)
Line of credit with a bank —due July 1, 2019, and collateralized by accounts receivable (1)			-			$	1,866
Equipment financing (2)			172,636				165,331
Total long-term debt			172,636				167,197
Less current maturities			(73,641	)			(42,806	)
Long-term debt —net of current maturities		$	98,995			$	124,391

Schedule of Maturities of Long-term Debt [Table Text Block]

201 8		$	73,641
201 9			48,256
20 20			40,365
20 21			8,355
20 22			2,019
Total		$	172,636

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Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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