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Note 8 - Employee Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2020
Notes Tables |
Schedule of Costs of Retirement Plans [Table Text Block] |
|  | Year Ended December 31, |
(in thousands) |  | 2020 |  |  | 2019 |
Interest cost |  | $ | 391 |  |  | $ | 484 |
Expected return on plan assets |  |  | (733 | ) |  |  | (761 | )
Net amortization loss |  |  | 105 |  |  |  | 336 |
Recognition of net loss due to settlements |  |  | 22 |  |  |  | 228 |
Net periodic benefit (credit) cost |  | $ | (215 | ) |  | $ | 287 |
Schedule of Changes in Projected Benefit Obligations [Table Text Block] |
|  | December 31, |
(in thousands) |  | 2020 |  |  | 2019 |
Change in benefit obligation: |  |  |  |  |  |  |  |
Balance at beginning of year |  | $ | 20,027 |  |  | $ | 18,701 |
Interest cost |  |  | 391 |  |  |  | 484 |
Actuarial loss |  |  | 4,814 |  |  |  | 1,513 |
Settlements due to transfers paid |  |  | (205 | ) |  |  | (871 | )
Benefits paid |  |  | (476 | ) |  |  | (447 | )
Currency translation adjustment |  |  | 968 |  |  |  | 647 |
Balance at end of year |  | $ | 25,519 |  |  | $ | 20,027 |
Schedule of Changes in Fair Value of Plan Assets [Table Text Block] |
|  | December 31, |
(in thousands) |  | 2020 |  |  | 2019 |
Change in fair value of plan assets: |  |  |  |  |  |  |  |
Balance at beginning of year |  | $ | 21,114 |  |  | $ | 17,819 |
Actual return on plan assets |  |  | 1,690 |  |  |  | 3,172 |
Employer contributions |  |  | 901 |  |  |  | 831 |
Settlement due to transfers paid |  |  | (159 | ) |  |  | (931 | )
Benefits paid |  |  | (476 | ) |  |  | (447 | )
Currency translation adjustment |  |  | 856 |  |  |  | 670 |
Balance at end of year |  | $ | 23,926 |  |  | $ | 21,114 |
Schedule of Net Funded Status [Table Text Block] |
|  | December 31, |
(in thousands) |  | 2020 |  |  | 2019 |
Benefit obligation |  | $ | (25,519 | ) |  | $ | (20,027 | )
Fair value of plan asset |  |  | 23,926 |  |  |  | 21,114 |
Net funded status |  | $ | (1,593 | ) |  | $ | 1,087 |
Schedule of Amounts Recognized in Balance Sheet [Table Text Block] |
|  | December 31, |
(in thousands) |  | 2020 |  |  | 2019 |
Other long term (liabilities) assets |  | $ | (1,593 | ) |  | $ | 1,087 |
Deferred income taxes |  |  | - |  |  |  | - |
Accumulated other comprehensive loss |  | $ | (1,593 | ) |  | $ | 1,087 |
Defined Benefit Plan, Assumptions [Table Text Block] |
|  | Year Ended December 31, |
|  | 2020 |  |  | 2019 |
Discount rate |  |  | 1.4 | % |  |  | 2.02 | %
Expected return on assets |  |  | 3.45 | % |  |  | 3.84 | %
Schedule of Allocation of Plan Assets [Table Text Block] |
|  | December 31, |
(in thousands) |  | 2020 |  |  | 2019 |
Asset category: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities |  | $ | 12,047 |  |  |  | 50 | % |  | $ | 11,534 |  |  |  | 55 | %
Debt securities |  |  | 4,605 |  |  |  | 19 | % |  |  | 3,919 |  |  |  | 19 | %
Liability driven investment funds |  |  | 5,168 |  |  |  | 22 | % |  |  | 3,615 |  |  |  | 17 | %
Cash and cash equivalents |  |  | 1,860 |  |  |  | 8 | % |  |  | 1,514 |  |  |  | 7 | %
Other |  |  | 246 |  |  |  | 1 | % |  |  | 532 |  |  |  | 3 | %
Total |  | $ | 23,926 |  |  |  | 100 | % |  | $ | 21,114 |  |  |  | 100 | %
Defined Benefit Plan, Plan Assets, Category [Table Text Block] |
|  | December 31, |
(in thousands) |  | 2020 |  |  | 2019 |
Quoted Prices in Active Markets for Identical Assets (Level 1) |  | $ | 1,860 |  |  | $ | 1,514 |
Significant Other Observable Inputs (Level 2) |  |  | 22,066 |  |  |  | 19,600 |
Significant Other Unobservable Inputs (Level 3) |  |  | - |  |  |  | - |
Total |  | $ | 23,926 |  |  | $ | 21,114 |

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- Definition Tabular disclosure of defined benefit plan asset investment. Includes, but is not limited to, fair value of category of plan asset and its level within fair value hierarchy. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(iv)(01) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(ii) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the major categories of plan assets of pension plans and/or other employee benefit plans. This information may include, but is not limited to, the target allocation of plan assets, the fair value of each major category of plan assets, and the level within the fair value hierarchy in which the fair value measurements fall. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(5) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the amounts that are recognized in the balance sheet (or statement of financial position) for pension plans and/or other employee benefit plans, showing separately the assets and current and noncurrent liabilities (if applicable) recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of assumption used to determine benefit obligation and net periodic benefit cost of defined benefit plan. Includes, but is not limited to, discount rate, rate of compensation increase, expected long-term rate of return on plan assets and interest crediting rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the reconciliation of beginning and ending balances of the fair value of plan assets of pension plans and/or other employee benefit plans showing separately, if applicable, the effects during the period attributable to each of the following: actual return on plan assets, foreign currency exchange rate changes, contributions by the employer, contributions by plan participants, benefits paid, business combinations, divestitures, and settlements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the change in the benefit obligation of pension plans and/or other employee benefit plans from the beginning to the end of the period, showing separately, if applicable, the effects of the following: service cost, interest cost, contributions by plan participants, actuarial gains and losses, foreign currency exchange rate changes, benefits paid, plan amendments, business combinations, divestitures, curtailments, settlements, and special and contractual termination benefits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the costs related to the various types of retirement plans including defined benefit pension plan cost, defined contribution plan cost, other postretirement benefit plan cost, and net periodic benefit cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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