Summary of Significant Accounting Policies - Additional Information (Details) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share
Anti-dilutive securities	2,083,584	8,150,314	2,083,584	8,150,314
Accounting Changes and Error Corrections
Net loss per share basic and diluted	$ 0.70	$ 1.12	$ 1.19	$ 2.15
Previously Reported
Accounting Changes and Error Corrections
Net loss per share basic and diluted		$ 0.80		$ 1.54
Convertible preferred stock
Antidilutive Securities Excluded from Computation of Earnings Per Share
Anti-dilutive securities		6,964,053		6,964,053
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share
Anti-dilutive securities	1,757,399	606,379	1,757,399	606,379
Restricted stock
Antidilutive Securities Excluded from Computation of Earnings Per Share
Anti-dilutive securities	326,185	579,882	326,185	579,882