Condensed Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 115,998	$ 66,946
Restricted cash	83	31
Short-term investments	0	10,003
Accounts receivable, net	101,689	74,259
Inventories:
Finished goods	28,052	32,072
Work in process	4,227	2,981
Raw materials	27,372	25,053
Total inventories	59,651	60,106
Supplies, prepaid items and other:
Prepaid insurance	1,965	4,449
Precious metals	14,639	12,048
Supplies	7,614	6,802
Fair value of derivatives and other	9	1,454
Other	2,321	1,174
Total supplies, prepaid items and other	26,548	25,927
Deferred income taxes	5,490	5,396
Total current assets	309,459	242,668
Property, plant and equipment, net	144,299	135,755
Other assets:
Debt issuance costs, net	1,243	1,023
Investment in affiliate	3,398	4,016
Goodwill	1,724	1,724
Other, net	3,687	2,795
Total other assets	10,052	9,558
Total assets	463,810	387,981
Current liabilities:
Accounts payable	53,817	51,025
Short-term financing	1,537	3,821
Accrued and other liabilities	36,534	31,507
Current portion of long-term debt	5,579	2,328
Total current liabilities	97,467	88,681
Long-term debt	81,250	93,064
Noncurrent accrued and other liabilities	13,583	12,605
Deferred income taxes	15,921	14,261
Commitments and contingencies (Note 10)
Stockholders' equity:
Common stock, $.10 par value; 75,000,000 shares authorized, 26,496,670 shares issued (25,476,534 at December 31, 2010)	2,650	2,548
Capital in excess of par value	158,719	131,845
Retained earnings	119,594	70,351
Stockholders equity including treasury stock	283,963	207,744
Less treasury stock at cost:
Common stock, 4,320,462 shares	28,374	28,374
Total stockholders' equity	255,589	179,370
Total Liabilities and Stockholders' Equity	463,810	387,981
Series B Preferred stock
Stockholders' equity:
Convertible preferred stock	2,000	2,000
Series D Preferred stock
Stockholders' equity:
Convertible preferred stock	$ 1,000	$ 1,000