Inventories (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current:
Raw materials	$ 867	$ 1,091
Finished goods	11,125	11,474
Inventories, current	11,992	12,565
Long-term:
Raw materials	650	444
Finished goods	1,782	1,461
Inventories, long-term	2,432	1,905
Inventory, Finished Goods, Amount Under Consignment	$ 1,270	$ 1,199