Pension and Other Post-Retirement Benefit Obligations (Tables)

6 Months Ended

Jun. 30, 2024

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The components of the net benefit costs for the Celgar and Peace River defined benefit plans, in aggregate for the three and six months ended June 30, 2024 and 2023 were as follows:

	Three Months Ended June 30,
	2024						2023
	Pension			Other Post- Retirement Benefits			Pension			Other Post- Retirement Benefits
Service cost	$	687		$	31		$	602		$	30
Interest cost		966			115			1,174			125
Expected return on plan assets		(1,184	)		—			(1,634	)		—
Amortization of unrecognized items		20			(204	)		396			(242	)
Net benefit costs (gains)	$	489		$	(58	)	$	538		$	(87	)

	Six Months Ended June 30,
	2024						2023
	Pension			Other Post- Retirement Benefits			Pension			Other Post- Retirement Benefits
Service cost	$	1,384		$	63		$	1,200		$	59
Interest cost		1,946			232			2,340			248
Expected return on plan assets		(2,717	)		—			(2,991	)		—
Amortization of unrecognized items		144			(411	)		524			(483	)
Net benefit costs (gains)	$	757		$	(116	)	$	1,073		$	(176	)