Warrant Liability (Details) - $ / shares		12 Months Ended
	Sep. 30, 2016	Dec. 31, 2016
Class of Warrant or Right [Line Items]
Shares associated with the warrant expiration (in shares)	220,650
Common stock warrant
Class of Warrant or Right [Line Items]
Shares entitled to purchase (in shares)		1,985,846
Price of shares entitled to purchase (in dollars per share)		$ 10.66
Vesting period after issuance		10 years
Vesting period after termination of agreement		1 year