Earnings and Dividends per Share (Tables)

6 Months Ended

Jun. 30, 2018

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, 2018 and 2017 are below.

	For the Three Months Ended June 30, 2018
	Numerator (Loss)			Denominator (Shares)		Per Share Amount
Basic net loss and loss per share	$	(901	)		34,670	$	(0.03	)
Effect of dilutive securities:
Common stock equivalents arising from stock options,    restricted stock awards, and employee stock purchase plan					—
Diluted loss and loss per share	$	(901	)		34,670	$	(0.03	)

	For the Three Months Ended June 30, 2017
	Numerator (Income)		Denominator (Shares)		Per Share Amount
Basic net income and earnings per share	$	5,486		34,474		$	0.16
Effect of dilutive securities:
Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan				333
Diluted earnings and earnings per share	$	5,486		34,807		$	0.16

	For the Six Months Ended June 30, 2018
	Numerator (Income)		Denominator (Shares)		Per Share Amount
Basic net income and earnings per share	$	4,862		34,632	$	0.14
Effect of dilutive securities:
Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan				83
Diluted earnings and earnings per share	$	4,862		34,715	$	0.14

	For the Six Months Ended June 30, 2017
	Numerator (Income)		Denominator (Shares)		Per Share Amount
Basic net loss and loss per share	$	5,524		34,345	$	0.16
Effect of dilutive securities:
Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan				341
Diluted loss and loss per share	$	5,524		34,686	$	0.16