Loss on Sale of Central Idaho Timber and Timberlands (Details) $ in Millions		3 Months Ended
	Apr. 21, 2016 USD ($) a	Jun. 30, 2016 USD ($)	Mar. 31, 2016
Timber And Timberlands [Line Items]
Acres sold through timberland sale | a	172,000
Land Sales	$ 114.0
Management's Belief that the Likelihood that a Sale would be Completed			20.00%
Real Estate [Member]
Timber And Timberlands [Line Items]
Net loss		$ 48.5