Note 14 - Retirement Benefit Plans - Net Periodic Benefit Cost (Details) - USD ($) $ in Thousands |
12 Months Ended | ||
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Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
|
Service benefit | $ (311) | $ (153) | $ (202) |
Interest cost | 95 | 108 | 106 |
Amortization of unrecognized transition obligation | 61 | 61 | 61 |
Net periodic (benefit) cost | (155) | 16 | (35) |
Amortization of unrecognized transition obligation, net of tax | (34) | (36) | (36) |
Total recognized in net periodic (benefit) cost and accumulated other comprehensive income | $ (189) | $ (20) | $ (71) |
X | ||||||||||
- Definition Amount of transition asset (obligation) recognized in net periodic benefit (cost) credit of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition Amount of cost recognized for passage of time related to defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition Amount, after tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition The total amount of net periodic benefit cost plus other changes in benefit obligations recognized in other comprehensive income for defined benefit plans for the period. No definition available.
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X | ||||||||||
- Definition The actuarial present value of benefits attributed by the pension benefit formula to services rendered by employees during the period. The portion of the expected postretirement benefit obligation attributed to employee service during the period. The service cost (benefit) component is a portion of the benefit obligation and is unaffected by the funded status of the plan No definition available.
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