Summary of Significant Accounting Policies (Details 2) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Inventory, Net [Abstract]
Finished goods and work in process	$ 346,905	$ 292,826
Logs	63,892	58,299
Other raw materials and supplies	40,259	33,732
Inventories	$ 451,056	$ 384,857