Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Prepaid purchase orders	$ 2,870	$ 126
Prepaid insurance	854	69
Deposits	1,374	114
Other receivables	289	94
Prepaid expenses and other current assets	5,387	$ 403
Kingfisher Facility
Deposits	$ 1,200