Pension and Other Post-Retirement Benefit Obligations (Tables)

6 Months Ended

Jun. 30, 2026

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, 2026 and 2025 were as follows:


		Three Months Ended June 30,
		2026								2025
		Pension				Other Post- Retirement Benefits				Pension				Other Post- Retirement Benefits
Service cost		$	642			$	21			$	671			$	36
Interest cost			1,074				106				1,015				111
Expected return on plan assets			(1,452	)			—				(1,389	)			—
Amortization of unrecognized items			(283	)			(190	)			(82	)			(187	)
Net benefit costs (gains)		$	(19	)		$	(63	)		$	215			$	(40	)


		Six Months Ended June 30,
		2026								2025
		Pension				Other Post- Retirement Benefits				Pension				Other Post- Retirement Benefits
Service cost		$	1,291			$	43			$	1,318			$	70
Interest cost			2,158				213				1,995				219
Expected return on plan assets			(2,916	)			—				(2,727	)			—
Amortization of unrecognized items			(569	)			(381	)			(163	)			(368	)
Net benefit costs (gains)		$	(36	)		$	(125	)		$	423			$	(79	)