Earnings (loss) and Dividends per Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Number of Shares Outstanding for Calculation of Earnings (Loss) Per Share

The computational components of basic and diluted earnings (loss) per share for the three-month and nine-month periods ended September 30, 2018 and 2017 are below.

	For the Three Months Ended September 30, 2018
	Numerator (Loss)			Denominator (Shares)		Per Share Amount
Basic net loss and loss per share	$	(12,915	)		34,779	$	(0.37	)
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	$	(12,915	)		34,779	$	(0.37	)

	For the Three Months Ended September 30, 2017
	Numerator (Income)		Denominator (Shares)		Per Share Amount
Basic net income and earnings per share	$	3,036		34,519	$	0.09
Effect of dilutive securities:
Common stock equivalents arising from stock options, restricted stock awards, and employee stock purchase plan				103
Diluted earnings and earnings per share	$	3,036		34,622	$	0.09

	For the Nine Months Ended September 30, 2018
	Numerator (Loss)			Denominator (Shares)		Per Share Amount
Basic net loss and loss per share	$	(8,053	)		34,681	$	(0.23	)
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	$	(8,053	)		34,681	$	(0.23	)

	For the Nine Months Ended September 30, 2017
	Numerator (Income)		Denominator (Shares)		Per Share Amount
Basic net income and earnings per share	$	8,560		34,404	$	0.25
Effect of dilutive securities and notes:
Common stock equivalents arising from stock    options, restricted stock awards, and employee    stock purchase plan				261
Diluted earnings and earnings per share	$	8,560		34,665	$	0.25