Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 33,768	$ 30,363
Accounts receivable - net	76,667	66,632
Inventories - net	82,551	83,243
Prepaid income tax	11,293	14,166
Other current assets	6,819	5,200
Total current assets	211,098	199,604
Property, plant and equipment - net	103,508	103,973
Other assets:
Goodwill	19,071	18,932
Other intangibles - net	61,923	63,519
Investments	3,831	4,031
Other assets	2,809	2,964
Total assets	402,240	393,023
Current liabilities:
Accounts payable	55,852	37,744
Deferred revenue	6,868	7,597
Accrued payroll and employee benefits	6,015	7,497
Accrued warranty	10,204	10,154
Current maturities of long-term debt	10,214	10,386
Other accrued liabilities	8,106	8,953
Total current liabilities	97,259	82,331
Long-term debt	145,051	149,179
Deferred tax liabilities	11,319	11,371
Other long-term liabilities	16,830	16,891
Stockholders' equity:
Common stock, par value $0.01, authorized 20,000,000 shares; shares issued at March 31, 2017 and December 31, 2016, 11,115,779; shares outstanding at March 31, 2017 and December 31, 2016, 10,331,830 and 10,312,625, respectively	111	111
Paid-in capital	43,572	44,098
Retained earnings	131,245	133,667
Treasury stock - at cost, common stock, shares at March 31, 2017 and December 31, 2016, 783,949 and 803,154, respectively	(18,856)	(19,336)
Accumulated other comprehensive loss	(24,291)	(25,289)
Total stockholders' equity	131,781	133,251
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 402,240	$ 393,023