Warrants (Details) - $ / shares	Mar. 31, 2016	Jul. 31, 2015	Dec. 31, 2009
Secured Loan Arrangement
Class of Stock [Line Items]
Warrants outstanding (in shares)	376,691
Warrants exercise price (in dollars per share)	$ 2.3229
B
Class of Stock [Line Items]
Warrants outstanding (in shares)			33,742
Warrants exercise price (in dollars per share)			$ 1.8908
Common stock | B
Class of Stock [Line Items]
Common stock issued for each warrant (in shares)		1