Property, Plant and Equipment

12 Months Ended

Dec. 31, 2017

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

6. Property, Plant and Equipment

(Table only in thousands)	2017			2016
Land	$	1,627		$	1,617
Building and improvements		18,063			19,887
Machinery and equipment		25,068			22,219
Property, plant and equipment, gross		44,758			43,723
Less accumulated depreciation		(21,358	)		(16,453	)
Property, plant and equipment, net	$	23,400		$	27,270

Depreciation expense was $4.5 million, $5.0 million and $4.2 million for 2017, 2016 and 2015, respectively.