Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 85,597	$ 43,974
Trade receivables, net	47,316	90,920
Other receivables	9,558	7,278
Inventories, net	131,607	109,920
Prepaid expenses and other current assets	9,717	7,187
Total current assets	283,795	259,279
Property, plant and equipment, net	203,616	186,487
Goodwill	33,196	32,063
Intangible assets, net	7,291	6,691
Deferred income taxes	14,758	19,259
Other non-current assets	1,546	1,760
Total assets	544,202	505,539
Current liabilities:
Accounts payable	39,345	39,257
Deferred revenue and advance payments	27,179	16,298
Accrued expenses and other current liabilities	$ 38,004	44,247
Short-term debt		30,000
Total current liabilities	$ 104,528	$ 129,802
Advance payments	39,000
Deferred income taxes	7,872	$ 7,735
Accrued pension benefits	42,890	42,661
Other non-current liabilities	14,840	14,506
Total liabilities	209,130	194,704
Stockholders' equity:
Common stock, $.10 par value; authorized 100,000,000, issued 33,573,194 and 33,528,915 shares at respective dates	3,357	3,353
Additional paid-in capital	133,183	131,980
Retained earnings	260,280	245,698
Treasury stock, at cost, 1,594,727 and 1,729,727 shares at respective dates	(13,596)	(14,747)
Accumulated other comprehensive loss	(48,152)	(55,449)
Total stockholders' equity	335,072	310,835
Total liabilities and stockholders' equity	$ 544,202	$ 505,539