CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 53,629	$ 53,133
Receivables (net of allowance of $1,675 and $1,526)	96,674	95,232
Revenue recognized in excess of billings on uncompleted contracts	9,156	10,763
Inventories	110,364	98,446
Deferred income taxes - current	22,537	19,827
Other current assets	15,365	15,561
Total current assets	307,725	292,962
Property, plant and equipment, net	311,019	290,586
Intangibles, net	5,961	6,281
Goodwill	25,777	26,197
Deferred income taxes - long-term	2,816	2,870
Other assets	3,220	2,765
Total assets	656,518	621,661
Current liabilities:
Accounts payable and accrued liabilities	53,624	53,614
Restructuring reserve	92	280
Billings in excess of revenue recognized on uncompleted contracts	3,581	5,430
Payroll and benefits payable	13,753	14,725
Accrued income taxes	2,091	537
Short-term debt		833
Current portion of long-term debt	7,500
Total current liabilities	80,641	75,419
Long-term debt	103,941	70,448
Deferred income taxes - long-term	41,383	31,879
Accrued pension and other liabilities	36,562	38,442
Total liabilities	$ 262,527	$ 216,188
Commitments and contingencies (Notes 15 and 16)
Stockholders' equity:
Common stock, $.01 par value, 100,000,000 shares authorized, 57,646,683 and 57,469,389 shares issued	$ 576	$ 575
Additional paid-in capital	181,713	176,475
Retained earnings	398,627	365,594
Treasury stock, at cost, 10,232,612 and 8,196,372 shares	(145,295)	(109,661)
Accumulated other comprehensive loss	(41,630)	(27,510)
Total stockholders' equity	393,991	405,473
Total liabilities and stockholders' equity	$ 656,518	$ 621,661