Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Consolidated Statements of Operations
Sales of goods	$ 537,214	$ 561,899	$ 559,846
Sales of services	87,309	45,293	38,117
Total sales	624,523	607,192	597,963
Cost of goods sold	420,169	449,964	458,043
Cost of services sold	70,701	35,637	23,981
Total cost of sales	490,870	485,601	482,024
Gross profit	133,653	121,591	115,939
Selling and administrative expenses	92,648	79,814	71,256
Amortization expense	12,245	4,695	3,112
Impairment of goodwill	80,337	0	0
Interest expense	4,378	512	485
Interest income	(206)	(530)	(659)
Equity in loss (income) of nonconsolidated investments	413	(1,282)	(1,316)
Other income	(5,585)	(678)	(1,077)
Total operating expenses	184,230	82,531	71,801
(Loss) income from operations, before income taxes	(50,577)	39,060	44,138
Income tax (benefit) expense	(6,132)	13,404	14,848
Net (loss) income	$ (44,445)	$ 25,656	$ 29,290
Basic (loss) earnings per common share	$ (4.33)	$ 2.51	$ 2.88
Diluted (loss) earnings per common share	(4.33)	2.48	2.85
Dividends paid per common share	$ 0.16	$ 0.13	$ 0.12