Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2014

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 September 30,
	2014				2013
	Class A		Class B		Class A		Class B
	(in thousands, except per share data)
Basic and diluted net income per share:
Numerator:
Allocation of net income	$	7,072	$	1,677	$	6,133	$	1,521
Denominator:
Weighted-average shares outstanding		21,175,388		5,576,775		20,383,165		5,576,775
Basic net income per share	$	0.33	$	0.30	$	0.30	$	0.27
Diluted net income per share:
Numerator:
Allocation of net income	$	7,072	$	1,677	$	6,133	$	1,521
Denominator:
Number of shares used in basic computation		21,175,388		5,576,775		20,383,165		5,576,775
Weighted-average shares effect of dilutive securities
Add: Director and employee stock options		526,260		—		224,446		—
Number of shares used in per share computations		21,701,648		5,576,775		20,607,611		5,576,775
Diluted net income per share	$	0.33	$	0.30	$	0.30	$	0.27

	Nine Months Ended September 30,
	2014				2013
	Class A		Class B		Class A		Class B
	(in thousands, except per share data)
Basic and diluted net income per share:
Numerator:
Allocation of net income	$	8,131	$	1,922	$	13,414	$	3,344
Denominator:
Weighted-average shares outstanding		21,004,426		5,576,775		20,246,449		5,576,775
Basic net income per share	$	0.39	$	0.35	$	0.66	$	0.60
Diluted net income per share:
Numerator:
Allocation of net income	$	8,131	$	1,922	$	13,414	$	3,344
Denominator:
Number of shares used in basic computation		21,004,426		5,576,775		20,246,449		5,576,775
Weighted-average shares effect of dilutive securities
Add: Director and employee stock options		431,762		—		305,377		—
Number of shares used in per share computations		21,436,188		5,576,775		20,551,826		5,576,775
Diluted net income per share	$	0.38	$	0.35	$	0.65	$	0.60

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 was greater than the average market price of our Class A common stock during the applicable period:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2014		2013		2014		2013
Number of options to purchase Class A shares excluded		2,504,333		1,559,267		2,548,500		1,209,000