Timber and Timberlands (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Timber and Timberlands [Line Items]
Timber and timberlands	$ 745,634	$ 760,431
Logging roads	70,965	67,989
Timber and Timberlands, Net	816,599	828,420
Depletion from Company Owned Lands	25,300	14,500	$ 14,600
Amortization of Logging Roads	3,100	$ 2,800	$ 2,700
Payments under timber cutting contracts, due in 2016	5,100
Payments under timber cutting contracts, due in 2017	2,900
Payments under timber cutting contracts, due in 2018	1,500
Payments under timber cutting contracts, due in 2019	$ 1,800