Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Condensed Consolidated Statements of Operations
Sales of goods	$ 97,629	$ 107,915
Sales of services	21,073	18,395
Total net sales	118,702	126,310
Cost of goods sold	79,401	86,393
Cost of services sold	18,049	15,957
Total cost of sales	97,450	102,350
Gross profit	21,252	23,960
Selling and administrative expenses	19,227	22,817
Amortization expense	1,759	3,266
Interest expense	2,108	1,170
Interest income	(56)	(55)
Equity in loss of nonconsolidated investments	200	196
Other expense	5	715
Total operating expenses	23,243	28,109
Loss before income taxes	(1,991)	(4,149)
Income tax expense (benefit)	431	(1,317)
Net loss	$ (2,422)	$ (2,832)
Basic loss per common share	$ (0.23)	$ (0.28)
Diluted loss per common share	(0.23)	(0.28)
Dividends paid per common share	$ 0	$ 0.04