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Note 11 - Operating Segments (Details) - Segment Financial Information (USD $)
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3 Months Ended | 6 Months Ended | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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| 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 | ||||||
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Treatment [Member]
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| 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 | ||||||
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Services [Member]
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| 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 | |||||||||
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Segments Total [Member]
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| 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 | ||||||
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Corporate and Other [Member]
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| 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] | |||||||
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