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Employee benefit plans (Tables)

12 Months Ended

Dec. 31, 2019

Employee benefit plans

Summary of pension and postretirement life insurance plans

		Pension Benefits
December 31		2019			2018
Change in benefit obligation:
Benefit obligation, beginning		$	16,338		$	16,935
Interest cost			639			623
Change in experience gain			96			135
Change in actuarial assumptions loss (gain)			1,221			(546)
Benefits paid			(803)			(809)
Benefit obligation, ending			17,491			16,338
Change in plan assets:
Fair value of plan assets, beginning			14,919			13,264
Actual return on plan assets			2,814			(236)
Employer contributions						2,700
Benefits paid			(803)			(809)
Fair value of plan assets, ending			16,930			14,919
Funded status at end of year		$	(561)		$	(1,419)

Schedule of amounts recognized in balance sheet

		Pension Benefits
December 31		2019			2018
Liabilities		$	561		$	1,419
Amounts recognized in the accumulated other comprehensive loss consist of:
Net actuarial gain			(6,579)			(7,218)
Deferred taxes			1,382			1,516
Net amount recognized		$	(5,197)		$	(5,702)

Schedule of components of net periodic benefit cost

		Pension Benefits
Years Ended December 31,		2019			2018			2017
Net periodic pension income:
Interest cost		$	639		$	623		$	650
Expected return on plan assets			(1,084)			(960)			(915)
Amortization of unrecognized net loss			227			194			195
Net periodic pension income:			(218)			(143)			(70)
Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss):
Net loss (gain)			639			(590)			318
Deferred tax			(134)			124			(67)
Total recognized in other comprehensive loss			505			(466)			251
Total recognized in net period pension cost and other comprehensive loss		$	287		$	(609)		$	181

Schedule of weighted-average assumptions used to determine benefit obligations and related expenses

		Pension Benefits
December 31,		2019		2018		2017
Discount rate:
Obligation		3.25	%	4.00	%	3.75	%
Expense		4.00		3.75		4.00
Expected long-term return on plan assets		7.50	%	7.50	%	7.50	%

Schedule of pension plan weighted-average asset allocations

December 31,		2019		2018
Asset Category:
Cash and cash equivalents		6.2	%	5.0	%
Equity securities		61.9		56.2
Corporate bonds		20.6		23.6
U.S. government securities		11.3		15.2
		100.0	%	100.0	%

Schedule of fair value measurement of pension plan assets

					Quoted Prices in
					Active Markets			Significant			Significant
					for Identical			Observable			Observable
					Assets			Inputs			Inputs
December 31, 2019		Total			(Level 1)			(Level 2)			(Level 3)
Cash		$	1,053		$	1,053					$
Equity securities:
U.S. large cap			9,663			9,663
International			817			817
Fixed income securities:
U.S. Treasuries			202					$	202
U.S. government agencies			1,713						1,713
Corporate bonds			3,482						3,482
Total		$	16,930		$	11,533		$	5,397		$

					Quoted Prices in
					Active Markets			Significant			Significant
					for Identical			Observable			Observable
					Assets			Inputs			Inputs
December 31, 2018		Total			(Level 1)			(Level 2)			(Level 3)
Cash		$	743		$	743					$
Equity securities:
U.S. large cap			7,687			7,687
International			694			694
Fixed income securities:
U.S. Treasuries			192					$	192
U.S. government agencies			2,085						2,085
Corporate bonds			3,518						3,518
Total		$	14,919		$	9,124		$	5,795		$

Schedule of expected benefit payments

		Pension Benefits
2020		$	867
2021			867
2022			904
2023			919
2024			969
Thereafter			5,071

X

- Definition

Tabular disclosure of the change in the benefit obligation, fair value of plan assets, and funded status of pension plans or other employee benefit plans.

+ References

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-SubTopic 20
-Section 50
-Paragraph 1
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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

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-SubTopic 20
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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

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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

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Tabular disclosure of the effect of fair value measurements using significant unobservable inputs (Level 3) on changes in plan assets of pension plans and/or other employee benefit plans for the period.

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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

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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.

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