Inventories, net (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Inventory Disclosure [Abstract]
Raw materials and work in progress	$ 2,683	$ 2,553
Finished goods	726	4,131
Total inventories	3,409	6,684
Reserve for obsolete inventory	0	(870)
Reserve for inventory repairs	0	(539)
Inventories, net	$ 3,409	$ 5,275