Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2019

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						Six months ended
	June 30,						June 30,
	2019			2018			2019			2018
Numerator for basic and diluted loss per share:
Net loss	$	(16,205	)	$	(14,812	)	$	(36,199	)	$	(37,084	)
Effect of reallocating undistributed earnings    of participating securities		—			—			—			—
Net loss available under the two-class method	$	(16,205	)	$	(14,812	)	$	(36,199	)	$	(37,084	)
Denominator:
Denominator for basic loss per share--weighted-average    shares		28,615,006			26,930,914			28,043,040			26,860,146
Effect of dilutive potential common shares		—			—			—			—
Denominator for diluted loss per share--adjusted    weighted-average shares		28,615,006			26,930,914			28,043,040			26,860,146
Basic loss per share	$	(0.57	)	$	(0.55	)	$	(1.29	)	$	(1.38	)
Diluted loss per share	$	(0.57	)	$	(0.55	)	$	(1.29	)	$	(1.38	)