Inventories (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Current:
Inventory, Current, Raw Materials, Net of Reserves	$ 1,914		$ 1,914		$ 1,362
Inventory, Current, Finished Goods, Net of Reserves	11,329		11,329		10,916
Inventories, current	13,243		13,243		12,278
Long-term:
Raw materials	211		211		227
Finished Goods	543		543		324
Inventory, Noncurrent	754		754		551
Inventory, finished goods, amount under consignment	1,794		1,794		1,520
Losses incurred on valuation of inventory and write-off of obsolete inventory	$ 9	$ 302	$ 424	$ 268