Retirement Plans (Tables)

12 Months Ended

Dec. 31, 2017

Retirement Plans

Schedule of projected benefit obligation

        Following is the plan's projected benefit obligation at December 31, 2017 and 2016.(amounts in thousands):

	2017			2016
Projected benefit obligation:
Balance, beginning of the year	$	3,027		$	2,865
Service cost		80			109
Interest cost		85			104
Actuarial (gain) loss		(469	)		(45	)
Benefits paid to participants		(481	)		(6	)
Balance, end of year	$	2,242		$	3,027

Schedule of funded status of the plan

        At December 31, 2017, 2016 and 2015, the funded status of the plan was as follows (amounts in thousands):

	2017			2016			2015
Excess of benefit obligation over the value of plan assets	$	(2,242	)	$	(3,027	)	$	(2,865	)
Unrecognized net actuarial loss		347			818			905
Unrecognized prior service cost		44			52			69
Accrued benefit cost	$	(1,851	)	$	(2,157	)	$	(1,891	)

Schedule of amounts recognized in the consolidated balance sheets

        At December 31, 2017 and 2016, the amounts recognized in the consolidated balance sheets were classified as follows (amounts in thousands):

	2017			2016
Accrued benefit cost	$	(2,242	)	$	(3,027	)
Accumulated other comprehensive loss		391			870
Net amount recognized	$	(1,851	)	$	(2,157	)

Schedule of benefits expected to be paid in each of the next five years and thereafter

        The benefits expected to be paid in each of the next five years and thereafter are as follows (amounts in thousands):

Years Ending December 31,	Amount
2018	$	242
2019		109
2020		91
2021		182
2022		235
2023 through 2026		582
	$	1,441

Schedule of weighted-average rates used

	2017	2016
Discount rate on the benefit obligation	3.35%		3.78	%
Rate of employee compensation increase(a)	1.75% - 2.5%		4.00	%

(a)           Rate of employee compensation increase is 1.75% for periods ending 2017-2021, and increasing to 2.5% for periods thereafter.

Schedule of pension expenses

        Pension expense for the years ended December 31, 2017, 2016 and 2015, consists of the following (amounts in thousands):

	2017		2016		2015
Service cost	$	80	$	109	$	112
Interest cost		85		104		102
Expected return on plan assets		—		—		—
Recognized actuarial loss (gain)		—		—		—
Amortization of prior service cost		8		17		17
Net loss amortization		1		42		51
	$	174	$	272	$	282

Schedule of further information about the Plan

        Further information about the Plan is presented in the table below (amounts in thousands):

			Pension Protection Act Zone Status	Funding Improvement Plan/Rehabilitation Plan	WAPA's Contribution							Expiration Date of Collective Bargaining Agreements
											Surcharge Imposed
Pension Fund	EIN		2016	Status	2017		2016		2015
TNGIPP (Plan No. 001)		52-1082662	Red	Implemented	$	149	$	156	$	151	No	June 27, 2019 May 31, 2022