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Operating Segment (Tables) | 3 Months Ended
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Mar. 31, 2018
Segment Reporting [Abstract] |
Schedule of Segment Reporting Information | 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.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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