Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 35,457	$ 30,363
Accounts receivable - net	77,041	66,632
Inventories - net	84,588	83,243
Prepaid income tax	1,150	14,166
Other current assets	6,648	5,200
Total current assets	204,884	199,604
Property, plant, and equipment - net	101,553	103,973
Other assets:
Goodwill	19,431	18,932
Other intangibles - net	60,611	63,519
Investments	3,976	4,031
Other assets	2,555	2,964
Total assets	393,010	393,023
Current liabilities:
Accounts payable	57,161	37,744
Deferred revenue	5,830	7,597
Accrued payroll and employee benefits	8,444	7,497
Accrued warranty	9,168	10,154
Current maturities of long-term debt	10,051	10,386
Other accrued liabilities	8,823	8,953
Total current liabilities	99,477	82,331
Long-term debt	127,933	149,179
Deferred tax liabilities	11,187	11,371
Other long-term liabilities	16,911	16,891
Stockholders' equity:
Common stock, par value $0.01, authorized 20,000,000 shares; shares issued at June 30, 2017 and December 31, 2016, 11,115,779; shares outstanding at June 30, 2017 and December 31, 2016, 10,342,346 and 10,312,625, respectively	111	111
Paid-in capital	43,952	44,098
Retained earnings	134,270	133,667
Treasury stock - at cost, common stock, shares at June 30, 2017 and December 31, 2016, 773,433 and 803,154, respectively	(18,678)	(19,336)
Accumulated other comprehensive loss	(22,153)	(25,289)
Total stockholders' equity	137,502	133,251
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 393,010	$ 393,023