Operating Segment (Tables)

3 Months Ended

Mar. 31, 2018

The table below presents certain financial information of our operating segments for the three months ended March 31, 2018 and 2017 (in thousands).

Segment Reporting for the Quarter Ended March 31, 2018

	Treatment			Services			Medical			Segments Total			Corporate ⁽¹⁾			Consolidated Total
Revenue from external customers	$	8,959		$	3,699			—		$	12,658		$	—		$	12,658
Intercompany revenues		213			14			—			227			—			—
Gross profit		2,780			541			—			3,321			—			3,321
Research and development		114			—			100			214			18			232
Interest income		—			—			—			—			49			49
Interest expense		—			(1	)		—			(1	)		(52	)		(53	)
Interest expense-financing fees		—			—			—			—			(9	)		(9	)
Depreciation and amortization		240			123			—			363			9			372
Segment income (loss) before income taxes		1,744			(86	)		(100	)		1,558			(1,254	)		304
Income tax expense		(51	)		—			—			(51	)		—			(51	)
Segment income (loss)		1,693			(86	)		(100	)		1,507			(1,254	)		253
Expenditures for segment assets		220			25			—			245			3			248

Segment Reporting for the Quarter Ended March 31, 2017

	Treatment			Services			Medical			Segments Total			Corporate ⁽¹⁾			Consolidated Total
Revenue from external customers	$	10,034		$	2,673			—		$	12,707		$	—		$	12,707
Intercompany revenues		16			3			—			19			—			—
Gross profit		2,687			32			—			2,719			—			2,719
Research and development		181			—			200			381			8			389
Interest income		—			—			—			—			35			35
Interest expense		(8	)		(1	)		—			(9	)		(91	)		(100	)
Interest expense-financing fees		—			—			—			—			(9	)		(9	)
Depreciation and amortization		1,009			136			—			1,145			10			1,155
Segment income (loss) before income taxes		1,602			(707	)		(200	)		695			(1,289	)		(594	)
Income tax expense		(80	)		—			—			(80	)		(1	)		(81	)
Segment income (loss)		1,522			(707	)		(200	)		615			(1,290	)		(675	)
Expenditures for segment assets		15			7			—			22			—			22

⁽¹⁾	Amounts reflect the activity for corporate headquarters not included in the segment information.