Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Gross deferred tax assets:
Pension, postretirement and other employee benefits	$ 1,791	$ 1,017
New Zealand subsidiary	14,252	40,224
CBPC tax credit carry forwards	14,555	14,641
Capitalized real estate costs	7,386	7,058
U.S. TRS net operating loss	5,747	1,872
Land basis difference	11,282	11,090
Other	4,047	5,079
Total gross deferred tax assets	59,060	80,981
Less: Valuation allowance	(38,839)	(34,889)
Total deferred tax assets after valuation allowance	20,221	46,092
Gross deferred tax liabilities:
Accelerated depreciation	(73)	(35)
New Zealand subsidiary	(66,430)	(72,527)
Timber installment sale	(4,823)	(4,706)
Other	(1,272)	(1,270)
Total gross deferred tax liabilities	(72,598)	(78,538)
Net deferred tax liability reported as noncurrent	$ (52,377)	$ (32,446)