Employee Retirement Plans - Expected Benefit Payments (Details) - USD ($) $ in Thousands |
12 Months Ended | |
---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
|
Expected benefit payments | ||
Voluntary contribution | $ 1,500 | |
Pension plan | ||
Expected benefit payments | ||
2018 | 1,540 | |
2019 | 1,460 | |
2020 | 1,510 | |
2021 | 1,550 | |
2022 | 1,720 | |
2023-2027 | 10,230 | |
Pension funding contributions made | 1,669 | $ 1,711 |
Required pension funding contributions expected to be made in next fiscal year | 72 | |
Pension plan | Minimum | ||
Expected benefit payments | ||
Pension funding contributions made | $ 169 |
X | ||||||||||
- Definition Represents the amount of benefits expected to be paid in the four fiscal years after the fifth fiscal year following the latest fiscal year from a defined benefit plan. No definition available.
|
X | ||||||||||
- Definition Amount of contributions made by the employer to defined benefit plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- References No definition available.
|
X | ||||||||||
- Definition Amount of benefits from a defined benefit plan expected to be paid in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition Amount of benefits from a defined benefit plan expected to be paid in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition Amount of benefits from a defined benefit plan expected to be paid in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition Amount of benefits from a defined benefit plan expected to be paid in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition Amount of benefits from a defined benefit plan expected to be paid in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition Amount of employer's best estimate of contributions expected to be paid to the plan during the next fiscal year beginning after the date of the latest statement of financial position. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
X | ||||||||||
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. No definition available.
|
X | ||||||||||
- Details
|
X | ||||||||||
- Details
|