Property, Plant and Equipment

3 Months Ended

Mar. 31, 2018

Property, Plant and Equipment

Property, Plant and Equipment

(6)  Property, Plant and Equipment

Property, plant and equipment consisted of the following at:

	March 31,		December 31,
	2018		2017
Land	$	13,492	$	13,492
Land improvements		42,962		42,962
Buildings		196,155		196,153
Machinery and equipment		412,652		413,349
Vehicles		635		635
Furniture and office equipment		6,023		5,970
Leasehold improvements		987		987
		672,906		673,548
Less accumulated depreciation		(125,834)		(117,067)
		547,072		556,481
Construction in progress		6,021		5,849
Total property, plant and equipment, net	$	553,093	$	562,330

Total depreciation expense was $9.3 million for the three months ended March 31, 2018 and 2017.