Loss Per Share (Tables)

12 Months Ended

Dec. 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:

	2018			2017
Numerator for basic and diluted loss per share:
Net loss	$	(75,433	)	$	(253,116	)
Effect of reallocating undistributed earnings of    participating securities		—			—
Net loss available under the two-class    method	$	(75,433	)	$	(253,116	)
Denominator:
Denominator for basic loss per    share—weighted-average shares		27,015,994			26,664,247
Effect of dilutive potential common shares		—			—
Denominator for diluted loss per    share—adjusted weighted-average shares		27,015,994			26,664,247
Basic loss per share	$	(2.79	)	$	(9.49	)
Diluted loss per share	$	(2.79	)	$	(9.49	)