11. Earnings per Share

The dual presentation of “basic” and “diluted” earnings per share is provided below. Share amounts below are in thousands.

	Three Months Ended September 30,				Six Months Ended September 30,
	2018		2017		2018		2017
Earnings per share — Basic:
Net income	$	13,094	$	8,030	$	15,742	$	11,926
Weighted-average shares outstanding — Basic		64,265		63,513		64,143		63,077
Net income per common share — Basic	$	0.20	$	0.13	$	0.25	$	0.19

Earnings per share — Diluted:
Net income	$	13,094	$	8,030	$	15,742	$	11,926
Weighted-average shares outstanding		64,265		63,513		64,143		63,077
Effect of potentially dilutive securities		592		17		219		12
Weighted-average shares outstanding — Diluted		64,857		63,530		64,362		63,089
Net income per common share — Diluted	$	0.20	$	0.13	$	0.24	$	0.19

The computation of diluted net income per share does not include 411 and 2,567 options to acquire shares of common stock for the three months ended September 30, 2018 and September 30, 2017, respectively, because their inclusion would have an anti-dilutive effect on net income per share.

The computation of diluted net income per share does not include 1,895 and 2,565 options to acquire shares of common stock for the six months ended September 30, 2018 and September 30, 2017, respectively, because their inclusion would have an anti-dilutive effect on net income per share.