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Note 11 - Operating Segments (Details) - Segment Financial Information (USD $) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenue from external customers | $ 12,657,000 |  | $ 22,784,000 |  | $ 23,201,000 |  | $ 42,613,000 |
Gross profit (loss) | 1,557,000 |  | 4,023,000 |  | 1,650,000 |  | 4,560,000 |
Interest income | 6,000 |  | 9,000 |  | 14,000 |  | 18,000 |
Interest expense | 214,000 |  | 200,000 |  | 367,000 |  | 344,000 |
Interest expense-financing fees | 36,000 |  | 24,000 |  | 81,000 |  | 47,000 |
Depreciation and amortization | 1,098,000 |  | 1,289,000 |  | 2,309,000 |  | 2,576,000 |
Segment loss, net of taxes | (2,361,000) |  | (980,000) |  | (6,063,000) |  | (3,868,000) |
Expenditures for segment assets | 120,000 |  | 59,000 |  | 333,000 |  | 175,000 |
Treatment [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenue from external customers | 9,396,000 |  | 10,108,000 |  | 17,068,000 |  | 17,450,000 |
Intercompany revenues |  |  | 407,000 |  |  |  | 1,075,000 |
Gross profit (loss) | 1,325,000 |  | 2,312,000 |  | 1,435,000 |  | 2,167,000 |
Interest expense | 15,000 |  | 22,000 |  | 25,000 |  | 27,000 |
Depreciation and amortization | 837,000 |  | 1,024,000 |  | 1,787,000 |  | 2,063,000 |
Segment loss, net of taxes | 45,000 |  | 795,000 |  | (1,128,000) |  | (93,000) |
Expenditures for segment assets | 120,000 |  | 59,000 |  | 331,000 |  | 175,000 |
Services [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenue from external customers | 3,261,000 |  | 12,676,000 |  | 6,133,000 |  | 25,163,000 |
Intercompany revenues | 33,000 |  | 16,000 |  | 44,000 |  | 55,000 |
Gross profit (loss) | 232,000 |  | 1,711,000 |  | 215,000 |  | 2,393,000 |
Interest expense | 1,000 |  | 1,000 |  | 1,000 |  | (4,000) |
Interest expense-financing fees | (2,000) |  |  |  | (2,000) |  |  |
Depreciation and amortization | 248,000 |  | 238,000 |  | 496,000 |  | 460,000 |
Segment loss, net of taxes | (1,007,000) |  | (619,000) |  | (2,055,000) |  | (819,000) |
Expenditures for segment assets |  |  |  |  | 2,000 |  |  |
Segments Total [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenue from external customers | 12,657,000 |  | 22,784,000 |  | 23,201,000 |  | 42,613,000 |
Intercompany revenues | 33,000 |  | 423,000 |  | 44,000 |  | 1,130,000 |
Gross profit (loss) | 1,557,000 |  | 4,023,000 |  | 1,650,000 |  | 4,560,000 |
Interest expense | 16,000 |  | 23,000 |  | 26,000 |  | 23,000 |
Interest expense-financing fees | (2,000) |  |  |  | (2,000) |  |  |
Depreciation and amortization | 1,085,000 |  | 1,262,000 |  | 2,283,000 |  | 2,523,000 |
Segment loss, net of taxes | (962,000) |  | 176,000 |  | (3,183,000) |  | (912,000) |
Expenditures for segment assets | 120,000 |  | 59,000 |  | 333,000 |  | 175,000 |
Corporate and Other [Member] |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |
Revenue from external customers |  | [1] |  | [1] |  | [1] |  | [1]
Intercompany revenues |  | [1] |  | [1] |  | [1] |  | [1]
Gross profit (loss) |  | [1] |  | [1] |  | [1] |  | [1]
Interest income | 6,000 | [1] | 9,000 | [1] | 14,000 | [1] | 18,000 | [1]
Interest expense | 198,000 | [1] | 177,000 | [1] | 341,000 | [1] | 321,000 | [1]
Interest expense-financing fees | 38,000 | [1] | 24,000 | [1] | 83,000 | [1] | 47,000 | [1]
Depreciation and amortization | 13,000 | [1] | 27,000 | [1] | 26,000 | [1] | 53,000 | [1]
Segment loss, net of taxes | (1,399,000) | [1] | (1,156,000) | [1] | (2,880,000) | [1] | (2,956,000) | [1]
Expenditures for segment assets |  | [1] |  | [1] |  | [1] |  |
[1] | Amounts reflect the activity for corporate headquarters not included in the segment information.

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- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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