Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Loss per Share under Two-Class Method

The following table sets forth the computation of basic and diluted loss per share under the two-class method:

	Three months ended
	March 31,
	2018			2017
Numerator for basic and diluted loss per share:
Net loss	$	(22,272	)	$	(32,444	)
Effect of reallocating undistributed earnings    of participating securities		—			—
Net loss available under the two-class method	$	(22,272	)	$	(32,444	)
Denominator:
Denominator for basic loss per share--weighted-average    shares		26,788,591			26,607,377
Effect of dilutive potential common shares		—			—
Denominator for diluted loss per share--adjusted    weighted-average shares		26,788,591			26,607,377
Basic loss per share	$	(0.83	)	$	(1.22	)
Diluted loss per share	$	(0.83	)	$	(1.22	)