Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 9,586	$ 37,678
Accounts receivable - net	85,615	76,582
Inventories - net	107,200	97,543
Prepaid income tax	725	188
Other current assets	7,402	9,120
Total current assets	210,528	221,111
Property, plant, and equipment - net	87,894	96,096
Other assets:
Goodwill	19,449	19,785
Other intangibles - net	51,801	57,440
Investments	155	162
Other assets	719	1,962
Total assets	370,546	396,556
Current liabilities:
Accounts payable	72,355	52,404
Deferred revenue	12,384	10,136
Accrued payroll and employee benefits	11,052	11,888
Accrued warranty	9,363	8,682
Current maturities of long-term debt	630	656
Other accrued liabilities	9,157	9,764
Total current liabilities	114,941	93,530
Long-term debt	75,840	129,310
Deferred tax liabilities	7,864	9,744
Other long-term liabilities	16,813	17,493
Stockholders' equity:
Common stock, par value $0.01, authorized 20,000,000 shares; shares issued at September 30, 2018 and December 31, 2017, 11,115,779; shares outstanding at September 30, 2018 and December 31, 2017, 10,366,007 and 10,340,576, respectively	111	111
Paid-in capital	47,042	45,017
Retained earnings	145,364	137,780
Treasury stock - at cost, common stock, shares at September 30, 2018 and December 31, 2017, 749,772 and 775,203, respectively	(18,165)	(18,662)
Accumulated other comprehensive loss	(19,264)	(17,767)
Total stockholders' equity	155,088	146,479
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 370,546	$ 396,556