Selected Financial Statement Information (Tables)

12 Months Ended

Dec. 31, 2012

Selected Financial Statement Information [Abstract]

Selected Financial Statement Information

	December 31, 2012			December 31, 2011
Accounts receivable, net:
Trade accounts receivable	$	132,782		$	129,149
Allowance for doubtful accounts	(53		)	(46		)
	$	132,729		$	129,103
Inventories:
Raw materials	$	26,798		$	39,821
Work-in-process	72,393			67,258
Finished goods	39,055			44,498
	$	138,246		$	151,577
Other current assets:
Precious metals reclaim	$	24,402		$	19,035
Other	23,980			16,721
	$	48,382		$	35,756
Property, plant and equipment, net:
Land	$	19,691		$	19,691
Buildings	94,766			93,184
Building and leasehold improvements	31,012			28,619
Machinery and equipment	664,737			577,262
Furniture and fixtures	6,915			6,535
Computer equipment and software	46,930			44,361
Assets in process	59,561			107,464
Total property, plant and equipment, gross	923,612			877,116
Accumulated depreciation	(474,871		)	(407,173		)
Total property, plant and equipment, net	$	448,741		$	469,943
Accrued payroll:
Accrued payroll and taxes	$	13,670		$	12,602
Accrued paid time off and sabbatical	14,979			13,985
Accrued management incentive program	2,437			135
Self-insurance liability	2,168			1,797
	$	33,254		$	28,519

Valuation and Qualifying Accounts [Abstract]

Rollforward of accounts receivable reserves

	Year ended December 31,
	2012	2011		2010
Opening balance	46	76		84
Additional charged to costs and expenses	7	20		54
Write-offs	—	(50	)	(62	)
Ending balance	53	46		76