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Net Loss per Share - Additional Information (Detail) - shares		3 Months Ended
	Jun. 04, 2019	Mar. 31, 2020	Mar. 31, 2019
Restricted Stock Units [Member] \| Executive Officers [Member] \| Share-based Payment Arrangement, Employee [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Anti-dilutive unvested restricted stock units outstanding		331,834
Restricted Stock Units [Member] \| 2014 Equity Incentive Plan [Member] \| Director [Member] \| Share-based Payment Arrangement, Nonemployee [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Restricted stock units, approved and granted	24,000	24,000
Employee Options [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Anti-dilutive common stock equivalents		4,930,590	4,925,641