Inventory Narrative (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Inventories [Abstract]
Charitable contributions	$ 1,743,000	$ 2,034,000	$ 840,000
Gain On Charitable Contributions	600,000	700,000	200,000
Net Reduction of Inventory After Charitable Contributions	$ 1,100,000	$ 1,300,000	$ 600,000