Stock-Based Compensation - Summary of Restricted Common Shares (Detail) - Restricted Stock And Units [Member]	12 Months Ended
	Dec. 31, 2020 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Non-vested Number, Beginning Balance (in shares) | shares	332,981
Granted (in shares) | shares	169,038
Vested (in shares) | shares	(86,976)
Forfeited (in shares) | shares	(29,408)
Non-vested Number, Ending Balance (in shares) | shares	385,635
Non-vested Weighted Average Grant Date Fair Value, Beginning Balance (in dollars per share) | $ / shares	$ 83.60
Granted (in dollars per share) | $ / shares	17.62
Vested (in dollars per share) | $ / shares	99.41
Forfeited (in dollars per share) | $ / shares	73.75
Non-vested Weighted Average Grant Date Fair Value, Ending Balance (in dollars per share) | $ / shares	$ 54.10