Inventories - Schedule Of Components Of Inventory (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Inventory, Net [Abstract]
Raw materials	$ 6,477,000	$ 6,656,000
Finished goods	77,747,000	84,296,000
Total	84,224,000	90,952,000
Inventory reserves	$ 6,600,000	$ 7,300,000