Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Schedule of Inventory, Current [Table Text Block]

Inventories at March 31, 2013 and December 31, 2012 were comprised of:

	March 31,			December 31,
(in thousands)	2013			2012
Finished products	$	21,531		$	20,382
In-process	11,073			9,513
Raw materials	16,694			16,507
Fine and fabricated precious metal in various stages of completion	13,224			9,599
	62,522			56,001
LIFO reserve	(3,405		)	(4,139		)
	$	59,117		$	51,862

Inventory Supplemental Disclosure [Table Text Block]

Supplemental inventory information:	March 31,		December 31,
(in thousands, except per ounce)	2013		2012
Precious metals stated at LIFO cost	$	9,819	$	5,460
Market value per ounce:
Silver	$	28.37	$	30.20
Gold	$	1,595.30	$	1,675.40
Palladium	$	767.50	$	702.85