Net Income Per Common Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income	$ 9,008	$ 3,337
Basic weighted-average common shares outstanding (in shares)	67,094	39,433
Effect of dilutive stock options (in shares)	82	28
Effect of dilutive restricted stock (in shares)	538	641
Diluted weighted-average common shares outstanding (in shares)	67,714	40,102
Basic income per common share (in dollars per share)	$ 0.13	$ 0.08
Diluted income per common share (in dollars per share)	$ 0.13	$ 0.08
Antidilutive securities excluded from diluted net income per common share (in shares)	1,349	604