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Note 15 - Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block] |
Contractual Obligations for the year ending December 31, |  | Contractual Lease Obligations |  |  | Purchase Obligations |  |  | Total Obligations |
201 7 |  | $ | 1,113,000 |  |  | $ | 18,051,000 |  |  | $ | 19,164,000 |
201 8 |  |  | 1,059,000 |  |  |  | 19,471,000 |  |  |  | 20,530,000 |
201 9 |  |  | 1,022,000 |  |  |  | 83,000 |  |  |  | 1,105,000 |
20 20 |  |  | 964,000 |  |  |  | 18,000 |  |  |  | 982,000 |
202 1 |  |  | 303,000 |  |  |  | 8,000 |  |  |  | 311,000 |
Thereafter |  |  | 1,138,000 |  |  |  | 43,000 |  |  |  | 1,181,000 |
|  | $ | 5,599,000 |  |  | $ | 37,674,000 |  |  | $ | 43,273,000 |

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- Definition Tabular disclosure of the aggregate amount of payments due on known contractual obligations for the five years following the date of the latest balance sheet and the combined aggregate amount of maturities of known contractual obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph a -Subparagraph 5 + Details
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