Earnings and Dividends per Share (Tables)

6 Months Ended

Jun. 30, 2016

Earnings Per Share [Abstract]

Number of Shares Outstanding for Calculation of Earnings Per Share

The computational components of basic and diluted earnings per share for the three-month and six-month periods ended June 30, 2016 and 2015 are below.

	For the three-month period ended June 30, 2016
	Numerator (Income)		Denominator (Shares)		Per Share Amount
Basic net income and income per share	$	4,050		33,946	$	0.12
Effect of dilutive securities and notes:
Common stock equivalents arising from stock    options, restricted stock awards, and employee    stock purchase plan		—		216		—
Diluted earnings and earnings per share	$	4,050		34,162	$	0.12

	For the three-month period ended June 30, 2015
	Numerator (Income)		Denominator (Shares)		Per Share Amount
Basic net income and earnings per share	$	2,104		26,284	$	0.08
Effect of dilutive securities and notes:
Common stock equivalents arising from stock    options, restricted stock awards, and employee    stock purchase plan		—		343		—
Diluted earnings and earnings per share	$	2,104		26,627	$	0.08

	For the six-month period ended June 30, 2016
	Numerator (Income)		Denominator (Shares)		Per Share Amount
Basic net income and earnings per share	$	7,150		33,937	$	0.21
Effect of dilutive securities and notes:
Common stock equivalents arising from stock    options, restricted stock awards, and employee    stock purchase plan		—		202		—
Diluted earnings and earnings per share	$	7,150		34,139	$	0.21

	For the six-month period ended June 30, 2015
	Numerator (Income)		Denominator (Shares)		Per Share Amount
Basic net income and earnings per share	$	2,302		26,277	$	0.09
Effect of dilutive securities and notes:
Common stock equivalents arising from stock    options, restricted stock awards, and employee    stock purchase plan		—		367		—
Diluted earnings and earnings per share	$	2,302		26,644	$	0.09