Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Net income	$ 11,873	$ 8,414
Basic weighted average shares of Common Stock outstanding	32,692,895	33,573,411
Dilutive effect of stock options, restricted stock awards and restricted stock units	176,254	159,924
Diluted weighted average shares of Common Stock outstanding	32,869,149	33,733,335
Basic earnings per share	$ 0.36	$ 0.25
Diluted earnings per share	$ 0.36	$ 0.25
Anti-dilutive securities share impact	682,741	396,500