Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 231,433	$ 97,190
Short-term investments	128,205	0
Receivables, less allowance for doubtful accounts of $649 and $722	106,880	106,578
Inventories, net	421,152	388,957
Costs in excess of billings	911	1,841
Deferred income taxes	30,675	30,632
Assets of discontinued operations		14,741
Other current assets	21,990	11,270
Total current assets	941,246	651,209
Property, plant, and equipment, net	368,363	375,949
Goodwill	134,823	135,870
Other intangible assets, net	53,826	56,495
Deferred income taxes	29,615	33,287
Other noncurrent assets	13,681	8,866
Total assets	1,541,554	1,261,676
Current liabilities:
Accounts payable	70,796	91,661
Accrued wages and other employee costs	26,355	34,096
Unearned revenues	49,700	28,148
Liabilities of discontinued operations		2,332
Other accrued liabilities	19,852	22,550
Total current liabilities	166,703	178,787
Long-term debt	415,220	198,337
Liability for post-retirement benefits	43,944	45,066
Liability for pension benefits	14,923	20,711
Deferred income taxes	81,190	51,452
Unearned revenues	12,496	13,013
Other noncurrent liabilities	12,307	11,798
Total liabilities	746,783	519,164
Commitments and Contingencies
Shareholders' equity:
Common stock, $0.01 par value; 50,000,000 shares authorized; 31,339,200 and 31,136,899 shares issued; 30,537,411 and 30,354,324 shares outstanding	313	311
Additional paid-in capital	528,541	484,798
Treasury stock, at cost; 801,789 and 782,575 shares	(18,798)	(18,399)
Accumulated other comprehensive loss	(43,950)	(44,722)
Retained earnings	328,665	320,524
Total shareholders' equity	794,771	742,512
Total liabilities and shareholders' equity	$ 1,541,554	$ 1,261,676