Organization and Operations - At-the-Market Offering (Details) - Common stock $ / shares in Units, $ in Thousands			1 Months Ended	3 Months Ended
	Nov. 10, 2016 USD ($)	Sep. 22, 2016 USD ($)	Aug. 31, 2016 USD ($)	Sep. 30, 2016 USD ($) $ / shares shares
At-the-Market Offering | Cowen
Common stock offering
Aggregate maximum offering amount		$ 1,400	$ 10,000
Percentage of commission payable to underwriter based on proceeds from common stock			3
Shares issued | shares				368,015
Share price (in dollars per share) | $ / shares				$ 4.35
Additional common stock issued		$ 1,600		$ 1,600
Net proceeds				1,300
Sales commissions and offering expenses				300
Remaining common stock available for sale under offering program				$ 1,400
Sales agreement
Common stock offering
Additional common stock issued	$ 8,400