CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 153,465	$ 181,742
Accounts receivable, net	199,938	171,193
Inventories	157,143	133,906
Income taxes prepaid and receivable	8,133	5,213
Prepaid expenses and other current assets	12,690	9,251
Total current assets	531,369	501,305
Property, plant and equipment, net	451,966	422,564
Intangibles, net	56,997	66,454
Goodwill	166,010	160,375
Income taxes receivable and deferred	81,244	68,865
Contract receivables	29,688	14,045
Other assets	32,343	29,825
Total assets	1,349,617	1,263,433
LIABILITIES AND SHAREHOLDERS' EQUITY
Notes and loans payable	186	312
Accounts payable	45,121	43,305
Accrued liabilities	103,498	95,195
Current maturities of long-term debt	51,765	51,666
Income taxes payable	12,493	9,531
Total current liabilities	213,063	200,009
Long-term debt	453,578	432,918
Other noncurrent liabilities	105,318	106,827
Deferred taxes and other liabilities	13,002	12,389
Total liabilities	784,961	752,143
SHAREHOLDERS' EQUITY
Preferred stock, par value $5.00 per share; authorized 2,000,000 shares; none issued
Additional paid in capital	428,088	425,953
Retained earnings	533,670	522,855
Accumulated items of other comprehensive income:
Translation adjustments	(92,523)	(133,298)
Pension and postretirement liability adjustments	(52,648)	(51,719)
Derivative valuation adjustment	917	828
Treasury stock (Class A), at cost 8,431,335 shares in 2017 and 8,443,444 shares in 2016	(256,876)	(257,136)
Total Company shareholders' equity	560,668	507,523
Noncontrolling interest	3,988	3,767
Total equity	564,656	511,290
Total liabilities and shareholders' equity	1,349,617	1,263,433
Common Class A [Member]
SHAREHOLDERS' EQUITY
Common Stock	37	37
Common Class B [Member]
SHAREHOLDERS' EQUITY
Common Stock	$ 3	$ 3