CONSOLIDATED CONDENSED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
CURRENT ASSETS:
Cash and cash equivalents	$ 30,888	$ 29,344
Trade accounts receivable, net	277,301	195,439
Inventories	461,803	463,517
Prepaid expenses and other current assets	53,926	43,206
Assets held for sale	1,916	1,969
TOTAL CURRENT ASSETS	825,834	733,475
OTHER ASSETS	67,508	68,251
DEFERRED TAX ASSETS	11,259	7,885
INTANGIBLE ASSETS, NET	9,067	7,211
GOODWILL	409,022	408,995
PROPERTY, PLANT AND EQUIPMENT:
Land	34,912	35,198
Buildings	320,523	317,464
Machinery and equipment	698,805	687,896
Construction in progress	35,591	40,833
Property, plant and equipment, gross	1,089,831	1,081,391
Less accumulated depreciation	(601,006)	(582,868)
Property, plant and equipment, net	488,825	498,523
TOTAL ASSETS	1,811,515	1,724,340
CURRENT LIABILITIES:
Trade accounts payable	98,878	109,780
Accrued salaries, wages and withholdings from employees	22,491	23,613
Other accrued expenses	49,395	51,764
Income taxes	7,870	11,036
Short-term borrowings	20,036	20,130
TOTAL CURRENT LIABILITIES	198,670	216,323
DEFERRED TAX LIABILITIES	31,714	18,724
OTHER LIABILITIES	10,014	13,539
ACCRUED EMPLOYEE AND RETIREE BENEFITS	21,926	19,294
LONG-TERM DEBT	732,762	604,159
SHAREHOLDERS' EQUITY:
Common stock	5,396	5,396
Additional paid-in capital	102,943	107,176
Earnings reinvested in the business	1,463,976	1,414,485
Treasury stock, at cost	(593,770)	(525,422)
Accumulated other comprehensive loss	(162,116)	(149,334)
TOTAL SHAREHOLDERS' EQUITY	816,429	852,301
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 1,811,515	$ 1,724,340