Segment Information - Schedule of Results by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Total revenues	$ 499,384	$ 529,863	$ 1,052,814	$ 1,052,529
Operating income (loss)	(43,779)	(108,832)	(44,227)	(128,953)
Depreciation and amortization	39,941	40,152	80,345	87,743
Total assets	2,484,462		2,484,462		$ 2,662,578
Pulp
Segment Reporting Information [Line Items]
Total revenues	346,808	374,175	755,103	743,831
Lumber
Segment Reporting Information [Line Items]
Total revenues	53,910	59,264	109,792	119,303
Energy and Chemicals
Segment Reporting Information [Line Items]
Total revenues	26,639	34,998	57,589	72,689
Manufactured Products
Segment Reporting Information [Line Items]
Total revenues	35,381	15,989	52,094	21,793
Pallets
Segment Reporting Information [Line Items]
Total revenues	26,741	32,675	54,761	68,850
Biofuels
Segment Reporting Information [Line Items]
Total revenues	8,155	10,242	19,409	18,377
Wood Residuals
Segment Reporting Information [Line Items]
Total revenues	1,750	2,520	4,066	7,686
Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	367,371	402,694	799,775	803,095
Operating income (loss)	4,481	(83,459)	21,928	(70,688)
Depreciation and amortization	27,193	27,783	54,566	55,182
Total assets	1,651,817		1,651,817		1,727,851
Operating Segments | Solid Wood
Segment Reporting Information [Line Items]
Total revenues	130,238	126,050	249,261	247,064
Operating income (loss)	(43,679)	(22,493)	(57,385)	(49,562)
Depreciation and amortization	12,526	12,126	25,337	32,024
Total assets	641,790		641,790		696,551
Operating Segments | Pulp | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	346,808	374,175	755,103	743,831
Operating Segments | Pulp | Solid Wood
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Operating Segments | Lumber | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Operating Segments | Lumber | Solid Wood
Segment Reporting Information [Line Items]
Total revenues	53,910	59,264	109,792	119,303
Operating Segments | Energy and Chemicals | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	20,563	28,519	44,672	59,264
Operating Segments | Energy and Chemicals | Solid Wood
Segment Reporting Information [Line Items]
Total revenues	4,301	5,360	9,139	11,055
Operating Segments | Manufactured Products | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Operating Segments | Manufactured Products | Solid Wood
Segment Reporting Information [Line Items]
Total revenues	35,381	15,989	52,094	21,793
Operating Segments | Pallets | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Operating Segments | Pallets | Solid Wood
Segment Reporting Information [Line Items]
Total revenues	26,741	32,675	54,761	68,850
Operating Segments | Biofuels | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Operating Segments | Biofuels | Solid Wood
Segment Reporting Information [Line Items]
Total revenues	8,155	10,242	19,409	18,377
Operating Segments | Wood Residuals | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Operating Segments | Wood Residuals | Solid Wood
Segment Reporting Information [Line Items]
Total revenues	1,750	2,520	4,066	7,686
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	1,775	1,119	3,778	2,370
Operating income (loss)	(4,581)	(2,880)	(8,770)	(8,703)
Depreciation and amortization	222	243	442	537
Total assets	190,855		190,855		$ 238,176
Corporate, Non-Segment | Pulp
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Corporate, Non-Segment | Lumber
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Corporate, Non-Segment | Energy and Chemicals
Segment Reporting Information [Line Items]
Total revenues	1,775	1,119	3,778	2,370
Corporate, Non-Segment | Manufactured Products
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Corporate, Non-Segment | Pallets
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Corporate, Non-Segment | Biofuels
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Corporate, Non-Segment | Wood Residuals
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
United States
Segment Reporting Information [Line Items]
Total revenues	103,672	77,543	186,364	156,436
United States | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	46,022	29,087	83,611	72,642
United States | Operating Segments | Solid Wood
Segment Reporting Information [Line Items]
Total revenues	57,133	48,164	101,328	83,220
United States | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	517	292	1,425	574
Germany
Segment Reporting Information [Line Items]
Total revenues	133,736	139,384	267,477	308,203
Germany | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	85,218	80,696	164,742	183,689
Germany | Operating Segments | Solid Wood
Segment Reporting Information [Line Items]
Total revenues	48,299	58,676	102,375	124,284
Germany | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	219	12	360	230
China
Segment Reporting Information [Line Items]
Total revenues	99,737	164,860	283,345	273,196
China | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	99,347	164,070	282,146	271,192
China | Operating Segments | Solid Wood
Segment Reporting Information [Line Items]
Total revenues	390	790	1,199	2,004
China | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	0	0	0	0
Other Countries
Segment Reporting Information [Line Items]
Total revenues	162,239	148,076	315,628	314,694
Other Countries | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	136,784	128,841	269,276	275,572
Other Countries | Operating Segments | Solid Wood
Segment Reporting Information [Line Items]
Total revenues	24,416	18,420	44,359	37,556
Other Countries | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	1,039	815	1,993	1,566
Foreign Countries
Segment Reporting Information [Line Items]
Total revenues	395,712	452,320	866,450	896,093
Foreign Countries | Operating Segments | Market Pulp
Segment Reporting Information [Line Items]
Total revenues	321,349	373,607	716,164	730,453
Foreign Countries | Operating Segments | Solid Wood
Segment Reporting Information [Line Items]
Total revenues	73,105	77,886	147,933	163,844
Foreign Countries | Corporate, Non-Segment
Segment Reporting Information [Line Items]
Total revenues	$ 1,258	$ 827	$ 2,353	$ 1,796