Share-based Compensation - Schedule of Share-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Share-based compensation expense	$ 171	$ 217	$ 319	$ 455
Cost of Goods Sold [Member]
Share-based compensation expense	7	5	11	11
Sales and Marketing [Member]
Share-based compensation expense	13	39	27	79
Research and Product Development [Member]
Share-based compensation expense	39	33	66	66
General and Administrative [Member]
Share-based compensation expense	$ 112	$ 140	$ 215	$ 299