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Industry Segments and Geographic Information (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 USD ($) | Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Corporate Overhead Footnote |  |  |  |  |  |  |  |  |  |  |
General and administrative expense |  |  |  |  |  |  |  |  | $ 46,156 | $ 34,767 | $ 52,189
Depreciation and amortization |  |  |  |  |  |  |  |  | 84 | 430 | 913
Interest expense |  |  |  |  |  |  |  |  | 15,513 | 21,157 | 18,654
Other general corporate (income) expense |  |  |  |  |  |  |  |  | (4,032) | 5,510 | 4,249
Total |  |  |  |  |  |  |  |  | $ 57,721 | 61,864 | 76,005
Industry Segments Details [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of Reportable Segments |  |  |  |  |  |  |  |  | 5 |  |
Product sales |  |  |  |  |  |  |  |  | $ 306,703 | 249,558 | 457,761
Services and rentals |  |  |  |  |  |  |  |  | 513,675 | 445,206 | 672,384
Intersegment eliminations |  |  |  |  |  |  |  |  | 0 | 0 | 0
Revenues | $ 227,644 | $ 216,364 | $ 208,369 | $ 168,001 | $ 173,222 | $ 176,553 | $ 175,660 | $ 169,329 | 820,378 | 694,764 | 1,130,145
Depreciation, amortization, and accretion |  |  |  |  |  |  |  |  | 116,159 | 129,595 | 155,015
Interest expense |  |  |  |  |  |  |  |  | 58,027 | 59,996 | 55,165
Income (loss) before taxes and discontinued operations |  |  |  |  |  |  |  |  | (60,983) | (237,090) | (201,763)
Total assets | 1,308,614 |  |  |  | 1,315,540 |  |  |  | 1,308,614 | 1,315,540 | 1,636,202
Capital expenditures |  |  |  |  |  |  |  |  | $ 51,923 | 21,066 | 120,597
Number of Operating Segments |  |  |  |  |  |  |  |  | 4 |  |
Fluids Division [Member] |  |  |  |  |  |  |  |  |  |  |
Industry Segments Details [Line Items] |  |  |  |  |  |  |  |  |  |  |
Product sales |  |  |  |  |  |  |  |  | $ 226,606 | 176,882 | 306,307
Services and rentals |  |  |  |  |  |  |  |  | 108,694 | 69,625 | 117,459
Intersegment eliminations |  |  |  |  |  |  |  |  | 31 | 87 | 278
Revenues |  |  |  |  |  |  |  |  | 335,331 | 246,595 | 424,044
Depreciation, amortization, and accretion |  |  |  |  |  |  |  |  | 23,797 | 28,338 | 35,125
Interest expense |  |  |  |  |  |  |  |  | 124 | 32 | 22
Income (loss) before taxes and discontinued operations |  |  |  |  |  |  |  |  | 68,540 | 10,430 | 80,789
Total assets | 346,974 |  |  |  | 322,858 |  |  |  | 346,974 | 322,858 | 370,892
Capital expenditures |  |  |  |  |  |  |  |  | 20,475 | 2,311 | 11,104
Production Testing Division [Member] |  |  |  |  |  |  |  |  |  |  |
Industry Segments Details [Line Items] |  |  |  |  |  |  |  |  |  |  |
Product sales |  |  |  |  |  |  |  |  | 12,108 | 0 | 6,944
Services and rentals |  |  |  |  |  |  |  |  | 80,104 | 59,509 | 122,292
Intersegment eliminations |  |  |  |  |  |  |  |  | 1,930 | 4,109 | 4,668
Revenues |  |  |  |  |  |  |  |  | 94,142 | 63,618 | 133,904
Depreciation, amortization, and accretion |  |  |  |  |  |  |  |  | 10,593 | 16,221 | 24,080
Interest expense |  |  |  |  |  |  |  |  | 6 | 42 | 0
Income (loss) before taxes and discontinued operations |  |  |  |  |  |  |  |  | (17,465) | (35,471) | (55,720)
Total assets | 86,304 |  |  |  | 87,462 |  |  |  | 86,304 | 87,462 | 134,725
Capital expenditures |  |  |  |  |  |  |  |  | (1,190) | 802 | 7,843
CSI Compressco [Member] |  |  |  |  |  |  |  |  |  |  |
Industry Segments Details [Line Items] |  |  |  |  |  |  |  |  |  |  |
Product sales |  |  |  |  |  |  |  |  | 66,691 | 71,809 | 141,461
Services and rentals |  |  |  |  |  |  |  |  | 228,896 | 239,566 | 316,178
Intersegment eliminations |  |  |  |  |  |  |  |  | 0 | 0 | 0
Revenues |  |  |  |  |  |  |  |  | 295,587 | 311,374 | 457,639
Depreciation, amortization, and accretion |  |  |  |  |  |  |  |  | 69,142 | 72,159 | 82,024
Interest expense |  |  |  |  |  |  |  |  | 42,309 | 38,271 | 35,235
Income (loss) before taxes and discontinued operations |  |  |  |  |  |  |  |  | (37,246) | (136,327) | (146,798)
Total assets | 784,745 |  |  |  | 816,148 |  |  |  | 784,745 | 816,148 | 1,004,760
Capital expenditures |  |  |  |  |  |  |  |  | 25,920 | 11,568 | 95,586
Production Enhancement Division Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Industry Segments Details [Line Items] |  |  |  |  |  |  |  |  |  |  |
Income (loss) before taxes and discontinued operations |  |  |  |  |  |  |  |  |  | 8 | (1)
Offshore Services [Member] |  |  |  |  |  |  |  |  |  |  |
Industry Segments Details [Line Items] |  |  |  |  |  |  |  |  |  |  |
Product sales |  |  |  |  |  |  |  |  | 760 | 116 | 611
Services and rentals |  |  |  |  |  |  |  |  | 95,981 | 76,506 | 116,455
Intersegment eliminations |  |  |  |  |  |  |  |  | 0 | 903 | 5,128
Revenues |  |  |  |  |  |  |  |  | 96,741 | 77,525 | 122,194
Depreciation, amortization, and accretion |  |  |  |  |  |  |  |  | 10,678 | 11,086 | 11,500
Interest expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income (loss) before taxes and discontinued operations |  |  |  |  |  |  |  |  | (14,767) | (12,025) | (195)
Total assets | 119,547 |  |  |  | 102,715 |  |  |  | 119,547 | 102,715 | 131,916
Capital expenditures |  |  |  |  |  |  |  |  | 5,786 | 5,913 | 5,949
Maritech [Member] |  |  |  |  |  |  |  |  |  |  |
Industry Segments Details [Line Items] |  |  |  |  |  |  |  |  |  |  |
Product sales |  |  |  |  |  |  |  |  | 538 | 751 | 2,438
Services and rentals |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intersegment eliminations |  |  |  |  |  |  |  |  | 0 | 0 | 0
Revenues |  |  |  |  |  |  |  |  | 538 | 751 | 2,438
Depreciation, amortization, and accretion |  |  |  |  |  |  |  |  | 1,428 | 1,362 | 1,375
Interest expense |  |  |  |  |  |  |  |  | 0 | 12 | 29
Income (loss) before taxes and discontinued operations |  |  |  |  |  |  |  |  | (2,172) | (1,841) | (3,833)
Total assets | 1,587 |  |  |  | 3,660 |  |  |  | 1,587 | 3,660 | 18,453
Capital expenditures |  |  |  |  |  |  |  |  | 0 | 0 | 38
Offshore Division Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Industry Segments Details [Line Items] |  |  |  |  |  |  |  |  |  |  |
Services and rentals |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intersegment eliminations |  |  |  |  |  |  |  |  | 0 | (903) | (5,128)
Revenues |  |  |  |  |  |  |  |  | 0 | (903) | (5,128)
Depreciation, amortization, and accretion |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest expense |  |  |  |  |  |  |  |  | 0 | 0 | 0
Income (loss) before taxes and discontinued operations |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total assets | 0 |  |  |  | 0 |  |  |  | 0 | 0 | 0
Capital expenditures |  |  |  |  |  |  |  |  | 0 | 0 | 0
Total Offshore Division [Member] |  |  |  |  |  |  |  |  |  |  |
Industry Segments Details [Line Items] |  |  |  |  |  |  |  |  |  |  |
Product sales |  |  |  |  |  |  |  |  | 1,298 | 867 | 3,049
Services and rentals |  |  |  |  |  |  |  |  | 95,981 | 76,506 | 116,455
Intersegment eliminations |  |  |  |  |  |  |  |  | 0 | 0 | 0
Revenues |  |  |  |  |  |  |  |  | 97,279 | 77,373 | 119,504
Depreciation, amortization, and accretion |  |  |  |  |  |  |  |  | 12,106 | 12,448 | 12,875
Interest expense |  |  |  |  |  |  |  |  | 0 | 12 | 29
Income (loss) before taxes and discontinued operations |  |  |  |  |  |  |  |  | (16,939) | (13,866) | (4,028)
Total assets | 121,134 |  |  |  | 106,375 |  |  |  | 121,134 | 106,375 | 150,369
Capital expenditures |  |  |  |  |  |  |  |  | $ 5,786 | 5,913 | 5,987
Number of Operating Segments |  |  |  |  |  |  |  |  | 2 |  |
Intersegment Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |
Industry Segments Details [Line Items] |  |  |  |  |  |  |  |  |  |  |
Intersegment eliminations |  |  |  |  |  |  |  |  | $ (1,961) | (4,196) | (4,946)
Revenues |  |  |  |  |  |  |  |  | (1,961) | (4,196) | (4,946)
Income (loss) before taxes and discontinued operations |  |  |  |  |  |  |  |  | (152) |  |
Corporate Overhead [Member] |  |  |  |  |  |  |  |  |  |  |
Industry Segments Details [Line Items] |  |  |  |  |  |  |  |  |  |  |
Services and rentals |  |  |  |  |  |  |  |  | 0 | 0 | 0
Revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation, amortization, and accretion |  |  |  |  |  |  |  |  | 521 | 429 | 911
Interest expense |  |  |  |  |  |  |  |  | 15,588 | 21,639 | 19,879
Income (loss) before taxes and discontinued operations |  |  |  |  |  |  |  |  | (57,721) | (61,864) | (76,005)
Total assets | $ (30,543) |  |  |  | $ (17,303) |  |  |  | (30,543) | (17,303) | (24,544)
Capital expenditures |  |  |  |  |  |  |  |  | $ 932 | $ 472 | $ 77

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