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Note 10 - Operating Segments (Details) - Segment Financial Information - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue from external customers |  | $ 16,354 | $ 12,657 | $ 29,955 | $ 23,201
Gross profit (loss) |  | 4,032 | 1,557 | 5,510 | 1,650
Interest income |  | 11 | 6 | 20 | 14
Interest expense |  | (140) | (214) | (267) | (367)
Interest expense-financing fees |  | (56) | (36) | (115) | (81)
Depreciation and amortization |  | 943 | 1,098 | 1,909 | 2,309
Segment profit (loss), net of taxes |  | 407 | (2,361) | (1,606) | (6,063)
Expenditures for segment assets |  | 144 | 120 | 265 | 333
Treatment [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue from external customers |  | 11,087 | 9,396 | 20,836 | 17,068
Intercompany revenues |  | 1 |  | 2 |
Gross profit (loss) |  | 3,335 | 1,325 | 4,570 | 1,435
Interest income |  | 1 |  | 2 |
Interest expense |  | (11) | (15) | (34) | (25)
Interest expense-financing fees |  |  |  | (2) |
Depreciation and amortization |  | 743 | 837 | 1,507 | 1,787
Segment profit (loss), net of taxes |  | 2,258 | 166 | 2,443 | (1,007)
Expenditures for segment assets |  | 138 | 120 | 244 | 331
Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue from external customers |  | 5,267 | 3,261 | 9,119 | 6,133
Intercompany revenues |  | 6 | 33 | 15 | 44
Gross profit (loss) |  | 697 | 232 | 940 | 215
Interest expense |  |  | (1) |  | (1)
Interest expense-financing fees |  |  | 2 |  | 2
Depreciation and amortization |  | 190 | 248 | 380 | 496
Segment profit (loss), net of taxes |  | 60 | (944) | (241) | (1,992)
Expenditures for segment assets |  |  |  | 13 | 2
Segments Total [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue from external customers |  | 16,354 | 12,657 | 29,955 | 23,201
Intercompany revenues |  | 7 | 33 | 17 | 44
Gross profit (loss) |  | 4,032 | 1,557 | 5,510 | 1,650
Interest income |  | 1 |  | 2 |
Interest expense |  | (11) | (16) | (34) | (26)
Interest expense-financing fees |  |  | 2 | (2) | 2
Depreciation and amortization |  | 933 | 1,085 | 1,887 | 2,283
Segment profit (loss), net of taxes |  | 2,318 | (778) | 2,202 | (2,999)
Expenditures for segment assets |  | $ 138 | $ 120 | $ 257 | $ 333
Corporate and Other [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenue from external customers | [1] |  |  |  |
Intercompany revenues | [1] |  |  |  |
Gross profit (loss) | [1] |  |  |  |
Interest income | [1] | $ 10 | $ 6 | $ 18 | $ 14
Interest expense | [1] | (129) | (198) | (233) | (341)
Interest expense-financing fees | [1] | (56) | (38) | (113) | (83)
Depreciation and amortization | [1] | 10 | 13 | 22 | 26
Segment profit (loss), net of taxes | [1] | (1,911) | $ (1,583) | (3,808) | $ (3,064)
Expenditures for segment assets | [1] | $ 6 |  | $ 8 |
[1] | Amounts reflect the activity for corporate headquarters and PF Medical S.A., not included in the segment information.

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