Note 7. Schedule of Property, Plant and Equipment (Details) - Consolidated - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Land	$ 160,697	$ 162,731
Buildings	156,909	159,799
Land and leasehold improvements	165,042	162,887
Equipment	199,934	221,880
Construction in progress	3,478	5,307
Property and equipment, gross	686,060	712,604
Less accumulated depreciation and amortization	(353,736)	(358,729)
Property and equipment, net	$ 332,324	$ 353,875