Segment Reporting (Tables)

6 Months Ended

Jun. 30, 2020

Segment Reporting [Abstract]

Summary of Segment Revenues, Gross Profit, Segment Operating Income or Loss and Reconciliation of Segment Operating Income or Loss to GAAP Loss

Segment revenues, gross profit, segment operating income or loss, and a reconciliation of segment operating income or loss to US GAAP loss before income tax is as follows (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2020			2019			2020			2019
Segment revenues:
Detection	$	4,117		$	5,209		$	8,593		$	9,377
Therapy		1,450			2,120			3,525			4,725
Total Revenue	$	5,567		$	7,329		$	12,118		$	14,102
Segment gross profit:
Detection	$	3,533		$	4,356		$	7,000		$	7,823
Therapy		824			1,370			1,867		$	3,185
Segment gross profit	$	4,357		$	5,726		$	8,867		$	11,008
Segment operating income (loss):
Detection	$	201		$	673		$	(145	)	$	975
Therapy		(432	)		(264	)		(1,438	)	$	(43	)
Segment operating income (loss)	$	(231	)	$	409		$	(1,583	)	$	932
General, administrative, depreciation and amortization expense	$	(2,080	)	$	(1,867	)	$	(4,621	)	$	(3,424	)
Interest expense		(115	)		(202	)		(245	)		(411	)
Other income		33			64			75			123
Loss on extinguishment of debt		—			—			(341	)		—
Fair value of convertible debentures		—			(1,915	)		(7,464	)		(4,440	)
Loss before income tax	$	(2,393	)	$	(3,511	)	$	(14,179	)	$	(7,220	)