Summary of Significant Accounting Policies (Details 2) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Inventory, Net [Abstract]
Finished goods and work in process	$ 336,384	$ 308,359
Logs	47,662	57,065
Other raw materials and supplies	31,068	29,037
Inventories	$ 415,114	$ 394,461