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v3.19.3.a.u2

Note 2 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 01, 2019 USD ($) | Dec. 31, 2019 USD ($) | Sep. 30, 2019 USD ($) | Jun. 30, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Sep. 30, 2018 USD ($) | Jun. 30, 2018 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) shares | Dec. 31, 2017 USD ($) shares
Revenue from Contract with Customer, Including Assessed Tax |  | $ 72,245 | $ 75,226 | $ 69,203 | $ 62,643 | $ 57,544 | $ 52,455 | $ 28,785 | $ 33,365 | $ 279,317 | $ 172,149 | $ 132,780
Book Overdrafts |  | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Workers' Compensation Liability |  | 1,700 |  |  |  | 2,700 |  |  |  | 1,700 | 2,700 |
Workers' Compensation Liability, Current |  | $ 269 |  |  |  | 452 |  |  |  | 269 | 452 |
Foreign Currency Transaction Gain (Loss), Realized |  |  |  |  |  |  |  |  |  | $ 500 | $ (400) | $ (200)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares |  |  |  |  |  |  |  |  |  | 0 | 63,000 | 196,000
Restricted Stock Units and Performance Share Award Target Level, Percentage |  | 100.00% |  |  |  |  |  |  |  | 100.00% |  |
Number of Customers with Receivable Balance in Excess of Ten Percent of Receivables |  |  |  |  |  |  |  |  |  | 1 | 1 |
Accounting Standards Update 2016-02 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Right-of-Use Asset | $ 8,000 |  |  |  |  |  |  |  |  |  |  |
Operating Lease, Liability, Total | 8,000 |  |  |  |  |  |  |  |  |  |  |
Accounting Standards Update 2018-02 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Tax Cuts and Jobs Act, Reclassification from AOCI to Retained Earnings, Tax Effect | $ 200 |  |  |  |  |  |  |  |  |  |  |
Performance Shares [Member] |  |  |  |  |  |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares |  |  |  |  |  |  |  |  |  |  | 39,000 |
Accrued Liability [Member] |  |  |  |  |  |  |  |  |  |  |  |
Workers' Compensation Liability, Current |  | $ 300 |  |  |  | 500 |  |  |  | $ 300 | $ 500 |
Other Long-term Liabilities [Member] |  |  |  |  |  |  |  |  |  |  |  |
Workers' Compensation Liability, Noncurrent |  | $ 1,400 |  |  |  | $ 2,200 |  |  |  | $ 1,400 | $ 2,200 |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  |  |  |  |  | 330 days |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  |  |  |  |  | 15 years |  |
Land Improvements [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  |  |  |  |  |  |  | 15 years |  |
Land Improvements [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  |  |  |  |  |  |  | 30 years |  |
Building [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  |  |  |  |  |  |  | 20 years |  |
Building [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  |  |  |  |  |  |  | 40 years |  |
Machinery and Equipment [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  |  |  |  |  |  |  | 3 years |  |
Machinery and Equipment [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  |  |  |  |  |  |  |  |  | 30 years |  |
Out of Period Adjustment [Member] |  |  |  |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  | $ (1,200) |  |  |  |  |  |  |

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