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Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Property, Plant and Equipment [Table Text Block] |
Leasehold improvements | Shorter of estimated useful life or remaining lease term
Buildings and improvements (in years) | 20 | - | 40
Machinery & Equipment (in years) | 7 | - | 15
Furniture, fixtures, computers & software (in years) | 3 | - | 7
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] |
|  | Year Ended December 31,
|  | 2016 |  | 2015 |  | 2014
Share-based compensation expense |  | $ | 1,056 |  |  | $ | 1,069 |  |  | $ | 1,119 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Year Ended December 31,
|  | 2016 |  | 2015 |  | 2014
Expected volatility |  |  | 29.7 | % |  | 31.5% | - | 32.3% |  | 32.8% | - | 37.9%
Expected dividends |  |  | None |  |  |  | None |  |  |  | None |
Risk-free interest rate |  |  | 0.9 | % |  | 1.0% | - | 1.2% |  | 0.7% | - | 0.9%
Exercise price |  | $ | 22.02 |  |  | $19.97 | - | $22.36 |  | $22.55 | - | $25.48
Expected term (in years) |  |  | 5.0 |  |  |  | 5.0 |  |  | 3.8 | to | 5.0
Weighted-average grant-date fair value |  | $ | 6.11 |  |  |  | $6.04 |  |  |  | $7.24 |

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- Definition Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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