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Note 4 - Components of Working Capital Accounts | 12 Months Ended
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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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