CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 44,074	$ 59,875
Accounts receivable, less allowances (2018 - $1,505; 2017 - $1,507)	163,984	116,712
Contract assets	24,756	0
Inventories	91,879	80,339
Taxes receivable	4,177	5,525
Prepaid expenses	5,846	4,858
Other current assets	7,490	6,186
Total current assets	342,206	273,495
Property, plant and equipment, at cost	452,060	397,152
Accumulated depreciation	(240,129)	(226,820)
Net, property, plant and equipment	211,931	170,332
Goodwill	198,233	68,969
Other intangible assets, net	142,670	40,543
Other assets, net	8,199	7,532
Total assets	903,239	560,871
Current liabilities:
Current portion of long-term debt	10,182	277
Accounts payable	88,195	71,931
Accrued payroll and other compensation	15,317	15,978
Accrued taxes	3,555	2,230
Other accrued liabilities	14,507	11,690
Total current liabilities	131,756	102,106
Long-term debt	327,674	76,913
Deferred tax liabilities	41,064	14,714
Benefit plan liabilities	20,394	9,743
Other long-term liabilities	5,302	3,999
Commitments and Contingencies (Note 15)
Stockholders’ equity:
Preferred stock	0	0
Common stock	251	250
Capital in excess of par value	91,834	88,006
Retained earnings	404,141	374,783
Accumulated other comprehensive loss	(28,726)	(20,148)
Treasury stock, at cost	(90,451)	(89,495)
Total stockholders’ equity	377,049	353,396
Total liabilities and stockholders’ equity	$ 903,239	$ 560,871