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Note 3 - Business Combination (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Business Acquisitions, by Acquisition [Table Text Block] |
Assets |  |  |  |
Cash and cash equivalents |  | $ | 912 |
Trade and other receivables |  |  | 8,887 |
Contract assets |  |  | 12,018 |
Inventories |  |  | 7,937 |
Prepaid expenses and other |  |  | 3,777 |
Property and equipment |  |  | 34,827 |
Other assets |  |  | 320 |
Total assets acquired |  |  | 68,678 |
Liabilities |  |  |  |
Accounts payable |  |  | 5,520 |
Accrued liabilities |  |  | 1,599 |
Contract liabilities |  |  | 123 |
Deferred income taxes |  |  | 3,221 |
Total liabilities assumed |  |  | 10,463 |
Bargain purchase gain |  |  | (20,080 | )
Total purchase consideration |  | $ | 38,135 |
Business Acquisition, Pro Forma Information [Table Text Block] |
|  | Year Ended December 31, |
|  | 2018 |  |  | 2017 |
Net sales |  | $ | 200,513 |  |  | $ | 186,377 |
Net loss from continuing operations |  |  | (15,102 | ) |  |  | (10,611 | )

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