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Note 9 - Income Taxes - Reconciliation of Taxes on Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Tax provision computed at the federal statutory rate, amount | $ (1,534) | $ 4,959
Tax provision computed at the federal statutory rate, percent | 21.00% | 21.00%
Different tax rates applicable to foreign operations, amount | $ 2,978 | $ 1,231
Different tax rates applicable to foreign operations, percent | (41.00%) | 5.00%
Increase in (reversal of) liability for uncertain tax positions - net | $ 320 | $ (822)
Increase in (reversal of) liability for uncertain tax positions - net, percent | (4.00%) | (3.00%)
Impact of U.S. Tax Reform, amount |  | $ (2,628)
Impact of U.S. Tax Reform, percent | 0.00% | (11.00%)
Research and experimentation and foreign tax credits | $ (907) | $ (300)
Research and experimentation and foreign tax credits | 12.00% | (1.00%)
State taxes, net of federal benefit, amount | $ (54) | $ 322
State taxes, net of federal benefit, percent | 1.00% | 1.00%
SERP/COLI and restricted stock income | $ (547) | $ 195
SERP/COLI and restricted stock income | 7.00% | 1.00%
Impairment of goodwill | $ 1,522 |
Impairment of goodwill | (21.00%) | 0.00%
Other, including under/(over) accruals, unrealized foreign exchange gains and amortization of purchase accounting intangibles | $ (337) | $ (50)
Other, including under/(over) accruals, unrealized foreign exchange gains and amortization of purchase accounting intangibles | 5.00% | 0.00%
Tax provision computed at the Company's effective tax rate, amount | $ 1,441 | $ 2,907
Tax provision computed at the Company's effective tax rate, percent | (20.00%) | 12.00%

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