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Note 2 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] |
(In thousands) |  |  |  |  |  | Adoption of |  |  |  |  |
|  | As Reported |  |  | ASC 606 |  |  | As Adjusted |
Costs and estimated earnings in excess of billings |  | $ | 8,397 |  |  | $ | (8,397 | ) |  | $ | --- |
Contract assets |  |  | --- |  |  |  | 8,397 |  |  |  | 8,397 |
Billings in excess of costs and estimated earnings |  |  | 466 |  |  |  | (466 | ) |  |  | --- |
Contract liabilities |  |  | --- |  |  |  | 466 |  |  |  | 466 |

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