Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2017

Earnings Per Share [Abstract]

Summary of Reconciliation of Numerators and Denominators Used in Basic and Diluted Per Share Computations

The table below presents for the periods indicated a reconciliation of the numerators and denominators we used to compute basic and diluted net income per share for each class of our common stock:

	Three Months Ended March 31,
	2017				2016
	Class A		Class B		Class A		Class B
	(in thousands, except per share data)
Basic net income per share:
Numerator:
Allocation of net income	$	4,134	$	971	$	9,487	$	2,362
Denominator:
Weighted-average shares outstanding		21,545		5,577		20,545		5,577
Basic net income per share	$	0.19	$	0.17	$	0.46	$	0.42
Diluted net income per share:
Numerator:
Allocation of net income	$	4,134	$	971	$	9,487	$	2,362
Denominator:
Number of shares used in basic computation		21,545		5,577		20,545		5,577
Weighted-average shares effect of dilutive securities
Add: Director and employee stock options		1,081		—		271		—
Number of shares used in diluted computation		22,626		5,577		20,816		5,577
Diluted net income per share	$	0.18	$	0.17	$	0.46	$	0.42

Reconciliation of Diluted Shares Outstanding

We did not include outstanding options to purchase the following number of shares of Class A common stock in our computation of diluted earnings per share because the exercise price of the options exceeded the average market price of our Class A common stock during the applicable periods:

	Three Months Ended March 31,
	2017		2016
Number of options to purchase Class A shares excluded		—		3,962,334