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Employee Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2017
Compensation And Retirement Disclosure [Abstract] |
Schedule of Pension Benefit Plan Obligations and Funded Status | The pension benefit plan obligations and funded status at December 31, 2017 and 2016, are as follows:
(In thousands) |  | 2017 |  |  | 2016 |
Change in projected benefit obligation: |  |  |  |  |  |  |  |
Projected benefit obligation at beginning of period |  | $ | 30,011 |  |  | $ | 26,851 |
Service cost |  |  | 1,260 |  |  |  | 1,211 |
Interest cost |  |  | 607 |  |  |  | 720 |
Actuarial (gain) loss - experience |  |  | 47 |  |  |  | (431 | )
Actuarial (gain) loss - assumptions |  |  | (1,294 | ) |  |  | 2,628 |
Benefit payments |  |  | (80 | ) |  |  | (52 | )
Effects of foreign currency exchange rate changes |  |  | 4,342 |  |  |  | (916 | )
Projected benefit obligation at end of period |  |  | 34,893 |  |  |  | 30,011 |
Change in plan assets: |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of period |  |  | 20,045 |  |  |  | 19,213 |
Actual return on plan assets |  |  | 709 |  |  |  | 1,494 |
Contributions |  |  | 3,001 |  |  |  | — |
Effects of foreign currency exchange rate changes |  |  | 2,869 |  |  |  | (662 | )
Fair value of plan assets at end of period |  |  | 26,624 |  |  |  | 20,045 |
Funded (unfunded) status at end of period |  | $ | (8,269 | ) |  | $ | (9,966 | )
Summary of Net Amounts Recognized Balance Sheet for the Unfunded Pension Liability | The net amounts recognized in the balance sheet for the unfunded pension liability as of December 31, 2017 and 2016 are as follows:
(In thousands) |  | 2017 |  |  | 2016 |
Current liability |  | $ | — |  |  | $ | — |
Non-current liability |  |  | 8,269 |  |  |  | 9,966 |
Total |  | $ | 8,269 |  |  | $ | 9,966 |
Components of Net Periodic Pension Cost and Amounts Recognized Other Comprehensive Income | The components of net periodic pension cost and amounts recognized in other comprehensive income for the years ended December 31, 2017, 2016 and 2015 are as follows:
(In thousands) |  | 2017 |  |  | 2016 |  |  | 2015 |
Net periodic benefit cost: |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 1,260 |  |  | $ | 1,211 |  |  | $ | 1,314 |
Interest cost |  |  | 607 |  |  |  | 720 |  |  |  | 615 |
Expected return on plan assets |  |  | (1,267 | ) |  |  | (1,057 | ) |  |  | (1,011 | )
Amortization of actuarial losses |  |  | 309 |  |  |  | 175 |  |  |  | 407 |
Net periodic benefit cost |  |  | 909 |  |  |  | 1,049 |  |  |  | 1,325 |
Other changes in plan assets and benefit obligations recognized in other comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |
Net actuarial (gain) loss |  |  | (654 | ) |  |  | 1,782 |  |  |  | (2,303 | )
Amortization of actuarial losses |  |  | (406 | ) |  |  | (156 | ) |  |  | (396 | )
Amount recognized in other comprehensive income |  |  | (1,060 | ) |  |  | 1,626 |  |  |  | (2,699 | )
Total recognized in net periodic benefit cost and other comprehensive income |  | $ | (151 | ) |  | $ | 2,675 |  |  | $ | (1,374 | )
Accumulated Other Comprehensive Income | The amounts recognized in accumulated other comprehensive income as of December 31, 2017 and 2016 are as follows:
(In thousands) |  | 2017 |  |  | 2016 |
Net actuarial loss |  | $ | (5,812 | ) |  | $ | (6,871 | )
Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost | The weighted-average assumptions that were used to determine the net periodic benefit cost for the years ended December 31, 2017, 2016 and 2015 are as follows:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Discount rates |  |  | 1.90 | % |  |  | 2.64 | % |  |  | 2.20 | %
Rate of compensation increase |  |  | 2.00 | % |  |  | 2.00 | % |  |  | 2.25 | %
Expected long-term rates of return |  |  | 5.90 | % |  |  | 5.40 | % |  |  | 5.40 | %
Weighted-Average Assumptions Used to Determine Benefit Obligation | The weighted-average assumptions that were used to determine the benefit obligation at December 31, 2017 and 2016:
|  | 2017 |  |  | 2016 |
Discount rates |  |  | 2.13 | % |  |  | 1.90 | %
Rate of compensation increase |  |  | 2.00 | % |  |  | 2.00 | %
Schedule of Pension Benefit Payments Expected Future Service | The following pension benefit payments, which reflect expected future service, as appropriate, are expected to be paid to participants:
(In thousands) |  |  |  |
2018 |  | $ | 549 |
2019 |  |  | 772 |
2020 |  |  | 1,090 |
2021 |  |  | 1,225 |
2022 |  |  | 1,315 |
2023 – 2027 |  |  | 6,301 |
Total |  | $ | 11,252 |
Schedule of Cash Equivalents and Investments Held at Fair Value | We have categorized our cash equivalents and our investments held at fair value into a three-level fair value hierarchy based on the priority of the inputs to the valuation technique for the cash equivalents and investments as follows: Level 1 - Values based on unadjusted quoted prices for identical assets or liabilities in an active market; Level 2 - Values based on quoted prices in markets that are not active or model inputs that are observable either directly or indirectly; Level 3 - Values based on prices or valuation techniques that require inputs that are both unobservable and significant to the overall fair value measurement. These inputs include information supplied by investees.
|  | Fair Value Measurements at December 31, 2017 Using |
(In thousands) |  | Fair Value |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Cash and cash equivalents |  | $ | 3,005 |  |  | $ | 3,005 |  |  | $ | — |  |  | $ | — |
Available-for-sale securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bond funds: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  |  | 14,349 |  |  |  | 14,349 |  |  |  | — |  |  |  | — |
Government bonds |  |  | 2,305 |  |  |  | 2,305 |  |  |  | — |  |  |  | — |
Equity funds: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Large cap blend |  |  | 5,758 |  |  |  | 5,758 |  |  |  | — |  |  |  | — |
Large cap value |  |  | 309 |  |  |  | 309 |  |  |  | — |  |  |  | — |
Balanced fund |  |  | 898 |  |  |  | 898 |  |  |  | — |  |  |  | — |
Available-for-sale securities |  |  | 23,619 |  |  |  | 23,619 |  |  |  | — |  |  |  | — |
Total |  | $ | 26,624 |  |  | $ | 26,624 |  |  | $ | — |  |  | $ | — |
|  | Fair Value Measurements at December 31, 2016 Using |
(In thousands) |  | Fair Value |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Cash and cash equivalents |  | $ | 6 |  |  | $ | 6 |  |  | $ | — |  |  | $ | — |
Available-for-sale securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bond funds: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate bonds |  |  | 12,546 |  |  |  | 12,546 |  |  |  | — |  |  |  | — |
Government bonds |  |  | 2,037 |  |  |  | 2,037 |  |  |  | — |  |  |  | — |
Equity funds: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Large cap blend |  |  | 4,462 |  |  |  | 4,462 |  |  |  | — |  |  |  | — |
Large cap value |  |  | 249 |  |  |  | 249 |  |  |  | — |  |  |  | — |
Balanced fund |  |  | 745 |  |  |  | 745 |  |  |  | — |  |  |  | — |
Available-for-sale securities |  |  | 20,039 |  |  |  | 20,039 |  |  |  | — |  |  |  | — |
Total |  | $ | 20,045 |  |  | $ | 20,045 |  |  | $ | — |  |  | $ | — |
Fair Value of Assets Held by Trust and Amounts Payable to Plan Participants | The fair value of the assets held by the Trust and the amounts payable to the plan participants at December 31, 2017 and 2016 are as follows:
(In thousands) |  | 2017 |  |  | 2016 |
Fair Value of Plan Assets |  |  |  |  |  |  |  |
Long-term Investments |  | $ | 19,883 |  |  | $ | 14,596 |
Total Fair Value of Plan Assets |  | $ | 19,883 |  |  | $ | 14,596 |
Amounts Payable to Plan Participants |  |  |  |  |  |  |  |
Non-current Liabilities |  | $ | 19,883 |  |  | $ | 14,596 |
Total Amounts Payable to Plan Participants |  | $ | 19,883 |  |  | $ | 14,596 |

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the assumptions used to determine for pension plans and/or other employee benefit plans the benefit obligation and net benefit cost, including assumed discount rates, rate increase in compensation increase, and expected long-term rates of return on plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of the change in the accumulated postemployment benefit obligation 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of arrangements with individual employees that are not equity-based payments or pensions and other postretirement benefits, which are generally employment contracts between the entity and selected officers or key employees containing a promise by the employer to pay certain amounts at designated future dates, usually including a period after retirement, upon compliance with stipulated requirements. This type of arrangement is distinguished from broader based employee benefit plans as it is usually tailored to the employee. Examples may include profit sharing, deferred bonuses or certain split-dollar life insurance arrangements. Disclosure also typically includes the amount of related compensation expense recognized during the reporting period and the carrying amount as of the balance sheet date of the related liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 25 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6409733&loc=d3e19524-108361 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -SubTopic 10 -Section 30 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6409875&loc=d3e20015-108363 + Details
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- Definition Tabular disclosure of the changes in plan assets and benefit obligations recognized in other comprehensive income (loss) during the period. + References No definition available. + Details
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- Definition Tabular disclosure of benefits expected to be paid by pension plans and/or other employee benefit plans in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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