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GUARANTOR AND NON-GUARANTOR SUBSIDIARIES (Income Statement) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ 858,204 | $ 843,181 | $ 849,140 | $ 749,778 | $ 747,403 | $ 755,846 | $ 752,788 | $ 688,941 | $ 3,300,303 | $ 2,944,978 | $ 2,755,226
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues | 594,857 | 580,685 | 583,584 | 546,425 | 526,690 | 519,595 | 519,803 | 496,585 | 2,305,551 | 2,062,673 | 1,932,857
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 503,747 | 456,648 | 422,015
Accretion of environmental liabilities |  |  |  |  |  |  |  |  | 9,806 | 9,460 | 10,177
Depreciation and amortization |  |  |  |  |  |  |  |  | 298,625 | 288,422 | 287,002
Goodwill impairment charge |  |  |  |  |  |  |  |  | 0 | 0 | 34,013
(Loss) income from operations | 41,485 | 65,745 | 64,353 | 10,991 | 27,935 | 47,663 | 46,744 | 5,433 | 182,574 | 127,775 | 69,162
Other (expense) income, net | (4,061) | (996) | 846 | (299) | (3,305) | (432) | (833) | (1,549) | (4,510) | (6,119) | 6,195
Loss on early extinguishment of debt |  | (2,500) |  |  |  | (1,900) | (6,000) |  | (2,488) | (7,891) | 0
Gain on sale of businesses |  |  |  |  |  |  | 31,700 |  | 0 | 30,732 | 16,884
Interest (expense) income, net |  |  |  |  |  |  |  |  | (81,094) | (85,808) | (83,525)
Equity in earnings of subsidiaries, net of tax |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intercompany interest income (expense) |  |  |  |  |  |  |  |  | 0 | 0 | 0
(Loss) income before (benefit) provision for income taxes |  |  |  |  |  |  |  |  | 94,482 | 58,689 | 8,716
(Benefit) provision for income taxes |  |  |  |  |  |  |  |  | 28,846 | (42,050) | 48,589
Net income (loss) | $ 16,431 | $ 31,089 | $ 30,747 | $ (12,631) | $ 84,194 | $ 12,058 | $ 25,880 | $ (21,393) | 65,636 | 100,739 | (39,873)
Other comprehensive loss |  |  |  |  |  |  |  |  | (50,964) | 41,919 | 40,566
Comprehensive income (loss) |  |  |  |  |  |  |  |  | 14,672 | 142,658 | 693
Reportable Legal Entities | Clean Harbors, Inc. |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 347 | 0 | 85
Accretion of environmental liabilities |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  | 0 | 0 | 0
Goodwill impairment charge |  |  |  |  |  |  |  |  |  |  | 0
(Loss) income from operations |  |  |  |  |  |  |  |  | (347) | 0 | (85)
Other (expense) income, net |  |  |  |  |  |  |  |  | (1,384) | (222) | 0
Loss on early extinguishment of debt |  |  |  |  |  |  |  |  | (2,488) | (7,891) |
Gain on sale of businesses |  |  |  |  |  |  |  |  |  | 0 | 0
Interest (expense) income, net |  |  |  |  |  |  |  |  | (83,362) | (87,113) | (88,984)
Equity in earnings of subsidiaries, net of tax |  |  |  |  |  |  |  |  | 129,082 | 157,963 | 13,568
Intercompany interest income (expense) |  |  |  |  |  |  |  |  | 0 | 0 | 0
(Loss) income before (benefit) provision for income taxes |  |  |  |  |  |  |  |  | 41,501 | 62,737 | (75,501)
(Benefit) provision for income taxes |  |  |  |  |  |  |  |  | (24,135) | (38,002) | (35,628)
Net income (loss) |  |  |  |  |  |  |  |  | 65,636 | 100,739 | (39,873)
Other comprehensive loss |  |  |  |  |  |  |  |  | (50,964) | 41,919 | 40,566
Comprehensive income (loss) |  |  |  |  |  |  |  |  | 14,672 | 142,658 | 693
Reportable Legal Entities | Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 2,682,710 | 2,362,292 | 2,158,853
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | 1,841,070 | 1,610,781 | 1,465,201
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 419,984 | 373,050 | 341,963
Accretion of environmental liabilities |  |  |  |  |  |  |  |  | 8,797 | 8,479 | 9,261
Depreciation and amortization |  |  |  |  |  |  |  |  | 219,530 | 205,034 | 201,153
Goodwill impairment charge |  |  |  |  |  |  |  |  |  |  | 0
(Loss) income from operations |  |  |  |  |  |  |  |  | 193,329 | 164,948 | 141,275
Other (expense) income, net |  |  |  |  |  |  |  |  | (1,284) | (5,156) | 7,713
Loss on early extinguishment of debt |  |  |  |  |  |  |  |  | 0 | 0 |
Gain on sale of businesses |  |  |  |  |  |  |  |  |  | 30,732 | 1,704
Interest (expense) income, net |  |  |  |  |  |  |  |  | 1,252 | 1,523 | 5,391
Equity in earnings of subsidiaries, net of tax |  |  |  |  |  |  |  |  | (25,765) | (48,683) | (80,244)
Intercompany interest income (expense) |  |  |  |  |  |  |  |  | 2,841 | 5,288 | 19,855
(Loss) income before (benefit) provision for income taxes |  |  |  |  |  |  |  |  | 170,373 | 148,652 | 95,694
(Benefit) provision for income taxes |  |  |  |  |  |  |  |  | 46,267 | (10,117) | 82,643
Net income (loss) |  |  |  |  |  |  |  |  | 124,106 | 158,769 | 13,051
Other comprehensive loss |  |  |  |  |  |  |  |  | (50,964) | 41,919 | 40,566
Comprehensive income (loss) |  |  |  |  |  |  |  |  | 73,142 | 200,688 | 53,617
Reportable Legal Entities | Non-Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 687,645 | 648,553 | 655,868
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | 534,533 | 517,759 | 527,151
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 83,416 | 83,598 | 79,967
Accretion of environmental liabilities |  |  |  |  |  |  |  |  | 1,009 | 981 | 916
Depreciation and amortization |  |  |  |  |  |  |  |  | 79,095 | 83,388 | 85,849
Goodwill impairment charge |  |  |  |  |  |  |  |  |  |  | 34,013
(Loss) income from operations |  |  |  |  |  |  |  |  | (10,408) | (37,173) | (72,028)
Other (expense) income, net |  |  |  |  |  |  |  |  | (1,842) | (741) | (1,518)
Loss on early extinguishment of debt |  |  |  |  |  |  |  |  | 0 | 0 |
Gain on sale of businesses |  |  |  |  |  |  |  |  |  | 0 | 15,180
Interest (expense) income, net |  |  |  |  |  |  |  |  | 1,016 | (218) | 68
Equity in earnings of subsidiaries, net of tax |  |  |  |  |  |  |  |  | 0 | 0 | 0
Intercompany interest income (expense) |  |  |  |  |  |  |  |  | (2,841) | (5,288) | (19,855)
(Loss) income before (benefit) provision for income taxes |  |  |  |  |  |  |  |  | (14,075) | (43,420) | (78,153)
(Benefit) provision for income taxes |  |  |  |  |  |  |  |  | 6,714 | 6,069 | 1,574
Net income (loss) |  |  |  |  |  |  |  |  | (20,789) | (49,489) | (79,727)
Other comprehensive loss |  |  |  |  |  |  |  |  | (44,292) | 38,131 | 15,291
Comprehensive income (loss) |  |  |  |  |  |  |  |  | (65,081) | (11,358) | (64,436)
Consolidating Adjustments |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | (70,052) | (65,867) | (59,495)
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | (70,052) | (65,867) | (59,495)
Selling, general and administrative expenses |  |  |  |  |  |  |  |  | 0 | 0 | 0
Accretion of environmental liabilities |  |  |  |  |  |  |  |  | 0 | 0 | 0
Depreciation and amortization |  |  |  |  |  |  |  |  | 0 | 0 | 0
Goodwill impairment charge |  |  |  |  |  |  |  |  |  |  | 0
(Loss) income from operations |  |  |  |  |  |  |  |  | 0 | 0 | 0
Other (expense) income, net |  |  |  |  |  |  |  |  | 0 | 0 | 0
Loss on early extinguishment of debt |  |  |  |  |  |  |  |  | 0 | 0 |
Gain on sale of businesses |  |  |  |  |  |  |  |  |  | 0 | 0
Interest (expense) income, net |  |  |  |  |  |  |  |  | 0 | 0 | 0
Equity in earnings of subsidiaries, net of tax |  |  |  |  |  |  |  |  | (103,317) | (109,280) | 66,676
Intercompany interest income (expense) |  |  |  |  |  |  |  |  | 0 | 0 | 0
(Loss) income before (benefit) provision for income taxes |  |  |  |  |  |  |  |  | (103,317) | (109,280) | 66,676
(Benefit) provision for income taxes |  |  |  |  |  |  |  |  | 0 | 0 | 0
Net income (loss) |  |  |  |  |  |  |  |  | (103,317) | (109,280) | 66,676
Other comprehensive loss |  |  |  |  |  |  |  |  | 95,256 | (80,050) | (55,857)
Comprehensive income (loss) |  |  |  |  |  |  |  |  | (8,061) | (189,330) | 10,819
Service revenues |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 2,709,239 | 2,398,650 | 2,280,809
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | 1,861,975 | 1,641,798 | 1,543,210
Service revenues | Reportable Legal Entities | Clean Harbors, Inc. |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Service revenues | Reportable Legal Entities | Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 2,145,310 | 1,870,256 | 1,747,985
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | 1,421,693 | 1,224,326 | 1,116,132
Service revenues | Reportable Legal Entities | Non-Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 621,435 | 582,042 | 582,075
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | 497,788 | 471,120 | 476,329
Service revenues | Consolidating Adjustments |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | (57,506) | (53,648) | (49,251)
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | (57,506) | (53,648) | (49,251)
Product revenues |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 591,064 | 546,328 | 474,417
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | 443,576 | 420,875 | 389,647
Product revenues | Reportable Legal Entities | Clean Harbors, Inc. |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | 0 | 0 | 0
Product revenues | Reportable Legal Entities | Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 537,400 | 492,036 | 410,868
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | 419,377 | 386,455 | 349,069
Product revenues | Reportable Legal Entities | Non-Guarantor Subsidiaries |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | 66,210 | 66,511 | 73,793
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | 36,745 | 46,639 | 50,822
Product revenues | Consolidating Adjustments |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  |  |  | (12,546) | (12,219) | (10,244)
Cost of revenues (exclusive of items shown separately below) |  |  |  |  |  |  |  |  |  |  |
Total cost of revenues |  |  |  |  |  |  |  |  | $ (12,546) | $ (12,219) | $ (10,244)

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