Stockholders' Equity - Schedule of Common Stock Reserved for Future Issuance (Details) - shares	Mar. 31, 2017	Dec. 31, 2016
Class Of Stock [Line Items]
Common stock, reserved for future issuance	1,745,615	1,901,140
Warrants Issued and Outstanding
Class Of Stock [Line Items]
Common stock, reserved for future issuance	51,003	51,003
Stock Option Awards Issued and Outstanding
Class Of Stock [Line Items]
Common stock, reserved for future issuance	889,862	1,040,387
Authorized for grants under the 2016 Employee Stock Purchase Plan
Class Of Stock [Line Items]
Common stock, reserved for future issuance	100,000	100,000
Authorized for Grants under the 2016 Equity Incentive Plan
Class Of Stock [Line Items]
Common stock, reserved for future issuance	704,750	709,750