Net Income (Loss) Per Common and Preferred Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Loss Per Common and Preferred Share

The following table sets out the computation of basic and diluted net loss per common and preferred share:

	Three Months Ended September 30,											Nine Months Ended September 30,
	2018						2017					2018						2017
Numerator:	Common Shares			Preferred Shares			Common Shares			Preferred Shares		Common Shares			Preferred Shares			Common Shares			Preferred Shares
Allocation of loss attributed to    shareholders
Basic	$	(12,762	)	$	(1,621	)	$	(7,742	)	$	—	$	(23,433	)	$	(2,506	)	$	(22,639	)	$	—
Adjustment for change in    fair value of liability    classified stock options		—			—			(20	)		—		—			—			(182	)		—
Diluted	$	(12,762	)	$	(1,621	)	$	(7,762	)	$	—	$	(23,433	)	$	(2,506	)	$	(22,821	)	$	—
Denominator:
Weighted average number of    shares:
Basic		20,306,298			2,579,111			17,998,420			—		17,472,403			1,868,815			17,980,608			—
Adjustment for dilutive    effect of stock options		—			—			11,559			—		—			—			19,458			—
Diluted		20,306,298			2,579,111			18,009,979			—		17,472,403			1,868,815			18,000,066			—
Net loss attributable to    shareholders per share - basic	$	(0.63	)	$	(0.63	)	$	(0.43	)	$	—	$	(1.34	)	$	(1.34	)	$	(1.26	)	$	—
Net loss attributable to    shareholders per share - diluted	$	(0.63	)	$	(0.63	)	$	(0.43	)	$	—	$	(1.34	)	$	(1.34	)	$	(1.27	)	$	—