Summary of Significant Accounting Policies - Inventories and Property (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Land and Other Inventories
Land and other inventories, impairment assessment	$ 161	$ 0
Land Improvements | Minimum
Property and Equipment, net
Estimated useful lives	10 years
Land Improvements | Maximum
Property and Equipment, net
Estimated useful lives	25 years
Building and Improvements | Minimum
Property and Equipment, net
Estimated useful lives	8 years
Building and Improvements | Maximum
Property and Equipment, net
Estimated useful lives	39 years
Machinery, Equipment and Fixtures | Minimum
Property and Equipment, net
Estimated useful lives	3 years
Machinery, Equipment and Fixtures | Maximum
Property and Equipment, net
Estimated useful lives	7 years