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Note 4 - Components of Working Capital Accounts

12 Months Ended

Dec. 31, 2016

Notes to Financial Statements

Supplemental Balance Sheet Disclosures [Text Block]

4. Components of working capital accounts

		December 31, 2016				December 31, 2015
Inventories
Work-in-progress		$	15,529			$	6,465
Finished goods			6,071				5,489
Supplies and other			8,112				4,201
		$	29,712			$	16,155
Accrued liabilities
Accrued payroll and benefits		$	60,546			$	45,690
Value appreciation plans			12,467				7,110
Customer advances			501				243
Other			37,094				24,857
		$	110,608			$	77,900

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