Defined Benefit Plan Accumulated Other Comprehensive Income Gains (Losses) Before Tax, Net

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- Definition

Defined Benefit Plan, Plan Assets, Increase (Decrease) Expense

+ References

No definition available.

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- Definition

Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

+ References

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- Definition

Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 14A
-URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (i-k)
-URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669646-108580

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- Definition

Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses.

+ References

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- Definition

Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive plan.

+ References

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- Definition

Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

+ References

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- Definition

Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 60
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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-Section 50
-Paragraph 1
-Subparagraph (a)(6)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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- Definition

Amount of contributions received by defined benefit plan from participant which increase benefit obligation.

+ References

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- Definition

Amount of contribution received by defined benefit plan from employer which increases 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 (d)(5)(ii)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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-Publisher FASB
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-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees.

+ References

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- Definition

Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status.

+ References

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- Definition

Amount of cost recognized for passage of time related to defined benefit plan.

+ References

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- Definition

Amount of increase (decrease) in benefit obligation of defined benefit plan from change in terms of existing plan or initiation of new plan.

+ References

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- Definition

Amount of payment to participant under defined benefit plan which decreases plan assets. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 60
-Section 50
-Paragraph 4
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- Definition

Amount of contributions received by defined benefit plan from participant which increases plan assets.

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- Definition

Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

+ References

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Retirement Benefit Plans (Changes in Benefit Obligations and Plan Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2018	Dec. 31, 2017
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation: at beginning of year	$ 513,844	$ 479,281
Service cost	12,414	15,381	$ 14,098
Interest cost	16,762	16,514	16,907
Plan amendments		(17,315)
Net actuarial gain (loss)	(30,796)	39,419
Benefit paid	(20,207)	(19,436)
Benefit obligation, end of year	492,017	513,844	479,281
Fair value of plan assets: at beginning of year	564,365	515,555
Actual return on plan assets	(40,491)	68,307
Employer contributions	40,138	1,132
Plan participants' contributions
Benefit payments	(20,207)	(19,436)
Expenses	(1,187)	(1,193)
Fair value of plan assets, end of year	542,618	564,365	515,555
Funded status at end of year-net asset (liability)				$ 50,601	$ 50,521
Unrecognized loss: at beginning of year	102,978	115,910
Net actuarial loss (gain)	46,492	(12,932)
Unrecognized (gain) loss at end of year	149,470	102,978	115,910
Projected benefit obligation	513,844	479,281	479,281	492,017	513,844
Accumulated benefit obligation				467,300	489,075
Fair value of plan assets	564,365	515,555	515,555	542,618	564,365
Other Post-Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation: at beginning of year	23,036	22,481
Service cost	120	129	170
Interest cost	621	668	773
Plan participants' contributions	628	636
Net actuarial gain (loss)	(6,717)	993
Benefit paid	(1,405)	(1,871)
Benefit obligation, end of year	16,283	23,036	22,481
Fair value of plan assets: at beginning of year
Actual return on plan assets
Employer contributions	777	1,235
Plan participants' contributions	628	636
Benefit payments	(1,405)	(1,871)
Expenses
Fair value of plan assets, end of year
Funded status at end of year-net asset (liability)				(16,283)	(23,036)
Unrecognized loss: at beginning of year	(732)	(2,078)
Net actuarial loss (gain)	(6,283)	1,346
Unrecognized (gain) loss at end of year	(7,015)	(732)	(2,078)
Projected benefit obligation	23,036	22,481	22,481	16,283	23,036
Fair value of plan assets