Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 43,974	$ 45,518
Trade receivables, less allowances of $304 and $346 at respective dates	90,920	77,124
Other receivables	7,278	10,610
Inventories, net	109,920	85,630
Prepaid expenses and other current assets	7,187	4,880
Total current assets	259,279	223,762
Property, plant and equipment, net	186,487	163,567
Goodwill	32,063	43,912
Intangible assets, net	6,691	8,902
Deferred income taxes	19,259	41,747
Other non-current assets	1,760	4,697
Total assets	505,539	486,587
Current liabilities:
Accounts payable	39,257	43,670
Deferred revenue and advance payments	16,298	14,095
Accrued expenses and other current liabilities	44,247	$ 40,825
Short-term debt	30,000
Total current liabilities	$ 129,802	$ 98,590
Long-term debt		60,000
Deferred income taxes	$ 7,735	10,249
Accrued pension benefits	42,661	50,949
Other non-current liabilities	14,506	15,573
Total liabilities	$ 194,704	$ 235,361
Commitments and contingencies (see Notes 19 and 20)
Stockholders' equity:
Common Stock, $.10 par value; authorized 100,000,000 issued 33,528,915 and 32,836,930 shares at respective dates	$ 3,353	$ 3,284
Additional paid-in capital	131,980	119,265
Retained earnings	245,698	188,481
Treasury stock, at cost, 1,729,727 and 1,738,624 shares at respective dates	(14,747)	(14,823)
Accumulated other comprehensive loss	(55,449)	(44,981)
Total stockholders' equity	310,835	251,226
Total liabilities and stockholders' equity	$ 505,539	$ 486,587