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Note 6 - Inventories | 12 Months Ended
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Dec. 31, 2014
Balance Sheet Related Disclosures [Abstract] |
Schedule of Utility Inventory [Table Text Block] | 6. Inventories Inventories consist of the following:
|  | December 31, |
|  | 2014 |  |  | 2013 |
Raw materials |  | $ | 6,161,363 |  |  | $ | 5,926,030 |
Work-in-process |  |  | 3,041,227 |  |  |  | 2,308,233 |
Finished goods |  |  | 3,204,186 |  |  |  | 2,762,522 |
Total |  | $ | 12,406,776 |  |  | $ | 10,996,785 |

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- Definition Tabular disclosure of all information related to inventories for utilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-05.6(a)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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