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GUARANTOR AND NON-GUARANTOR SUBSIDIARIES FINANCIAL INFORMATION (Consolidating Statement of Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Revenues: |  |  |  |
Service revenues | $ 610,940 | $ 584,562 | $ 1,171,154 | $ 1,114,793
Product revenues | 141,848 | 112,948 | 270,575 | 218,800
Total revenues | 752,788 | 697,510 | 1,441,729 | 1,333,593
Cost of revenues (exclusive of items shown separately below) |  |  |  |
Service cost of revenues | 412,356 | 388,684 | 803,443 | 762,670
Product cost of revenues | 107,447 | 91,318 | 212,945 | 181,611
Total cost of revenues | 519,803 | 480,002 | 1,016,388 | 944,281
Selling, general and administrative expenses | 112,294 | 107,063 | 224,515 | 211,547
Accretion of environmental liabilities | 2,416 | 2,548 | 4,706 | 5,053
Depreciation and amortization | 71,531 | 73,393 | 143,943 | 142,295
(Loss) income from operations | 46,744 | 34,504 | 52,177 | 30,417
Unrealized holding gains on available-for-sale investments | (833) | (189) | (2,382) | (539)
Loss on early extinguishment of debt | (6,045) | 0 | (6,045) | 0
Gain on sale of business | 31,722 | 0 | 31,722 | 0
Interest (expense) income | (22,492) | (21,647) | (45,068) | (40,627)
Equity in earnings of subsidiaries, net of taxes | 0 | 0 | 0 | 0
Intercompany interest income (expense) | 0 | 0 | 0 | 0
Income (loss) before (benefit) provision for income taxes | 49,096 | 12,668 | 30,404 | (10,749)
(Benefit) provision for income taxes | 23,216 | 8,702 | 25,917 | 6,156
Net income (loss) | 25,880 | 3,966 | 4,487 | (16,905)
Other comprehensive income | 15,098 | (1,178) | 21,149 | 44,659
Comprehensive income | 40,978 | 2,788 | 25,636 | 27,754
Reportable Legal Entities | Clean Harbors, Inc. |  |  |  |
Revenues: |  |  |  |
Service revenues | 0 | 0 | 0 | 0
Product revenues | 0 | 0 | 0 | 0
Total revenues | 0 | 0 | 0 | 0
Cost of revenues (exclusive of items shown separately below) |  |  |  |
Service cost of revenues | 0 | (587) | 0 | (587)
Product cost of revenues | 0 | 0 | 0 | 0
Total cost of revenues | 0 | (587) | 0 | (587)
Selling, general and administrative expenses | 27 | 37 | 51 | 61
Accretion of environmental liabilities | 0 | 0 | 0 | 0
Depreciation and amortization | 0 | 0 | 0 | 0
(Loss) income from operations | (27) | 550 | (51) | 526
Unrealized holding gains on available-for-sale investments | (76) | 0 | (222) | 0
Loss on early extinguishment of debt | (6,045) |  | (6,045) |
Gain on sale of business | 0 |  | 0 |
Interest (expense) income | (22,614) | (22,962) | (45,273) | (43,105)
Equity in earnings of subsidiaries, net of taxes | 43,167 | 17,413 | 35,530 | 8,642
Intercompany interest income (expense) | 0 | 0 | 0 | 0
Income (loss) before (benefit) provision for income taxes | 14,405 | (4,999) | (16,061) | (33,937)
(Benefit) provision for income taxes | (11,475) | (8,965) | (20,548) | (17,032)
Net income (loss) | 25,880 | 3,966 | 4,487 | (16,905)
Other comprehensive income | 15,098 | (1,178) | 21,149 | 44,659
Comprehensive income | 40,978 | 2,788 | 25,636 | 27,754
Reportable Legal Entities | Guarantor Subsidiaries |  |  |  |
Revenues: |  |  |  |
Service revenues | 474,801 | 456,013 | 918,106 | 884,490
Product revenues | 125,859 | 95,648 | 242,509 | 185,236
Total revenues | 600,660 | 551,661 | 1,160,615 | 1,069,726
Cost of revenues (exclusive of items shown separately below) |  |  |  |
Service cost of revenues | 306,960 | 292,343 | 601,105 | 575,307
Product cost of revenues | 98,645 | 79,108 | 195,150 | 158,462
Total cost of revenues | 405,605 | 371,451 | 796,255 | 733,769
Selling, general and administrative expenses | 92,504 | 83,882 | 184,675 | 164,537
Accretion of environmental liabilities | 2,181 | 2,313 | 4,236 | 4,603
Depreciation and amortization | 51,937 | 50,696 | 103,837 | 99,391
(Loss) income from operations | 48,433 | 43,319 | 71,612 | 67,426
Unrealized holding gains on available-for-sale investments | (406) | 400 | (1,795) | 312
Loss on early extinguishment of debt | 0 |  | 0 |
Gain on sale of business | 31,722 |  | 31,722 |
Interest (expense) income | 240 | 1,284 | 359 | 2,395
Equity in earnings of subsidiaries, net of taxes | (5,332) | (9,195) | (27,156) | (35,690)
Intercompany interest income (expense) | 1,268 | 5,497 | 2,565 | 10,656
Income (loss) before (benefit) provision for income taxes | 75,925 | 41,305 | 77,307 | 45,099
(Benefit) provision for income taxes | 31,981 | 23,892 | 41,618 | 36,457
Net income (loss) | 43,944 | 17,413 | 35,689 | 8,642
Other comprehensive income | 15,098 | (1,178) | 21,149 | 44,659
Comprehensive income | 59,042 | 16,235 | 56,838 | 53,301
Reportable Legal Entities | Non-Guarantor Subsidiaries |  |  |  |
Revenues: |  |  |  |
Service revenues | 147,924 | 139,413 | 278,995 | 253,436
Product revenues | 18,730 | 19,391 | 34,061 | 38,104
Total revenues | 166,654 | 158,804 | 313,056 | 291,540
Cost of revenues (exclusive of items shown separately below) |  |  |  |
Service cost of revenues | 117,181 | 107,792 | 228,285 | 211,083
Product cost of revenues | 11,543 | 14,301 | 23,790 | 27,689
Total cost of revenues | 128,724 | 122,093 | 252,075 | 238,772
Selling, general and administrative expenses | 19,763 | 23,144 | 39,789 | 46,949
Accretion of environmental liabilities | 235 | 235 | 470 | 450
Depreciation and amortization | 19,594 | 22,697 | 40,106 | 42,904
(Loss) income from operations | (1,662) | (9,365) | (19,384) | (37,535)
Unrealized holding gains on available-for-sale investments | (351) | (589) | (365) | (851)
Loss on early extinguishment of debt | 0 |  | 0 |
Gain on sale of business | 0 |  | 0 |
Interest (expense) income | (118) | 31 | (154) | 83
Equity in earnings of subsidiaries, net of taxes | 0 | 0 | 0 | 0
Intercompany interest income (expense) | (1,268) | (5,497) | (2,565) | (10,656)
Income (loss) before (benefit) provision for income taxes | (3,399) | (15,420) | (22,468) | (48,959)
(Benefit) provision for income taxes | 2,710 | (6,225) | 4,847 | (13,269)
Net income (loss) | (6,109) | (9,195) | (27,315) | (35,690)
Other comprehensive income | 12,837 | (597) | 17,869 | 28,330
Comprehensive income | 6,728 | (9,792) | (9,446) | (7,360)
Consolidating Adjustments |  |  |  |
Revenues: |  |  |  |
Service revenues | (11,785) | (10,864) | (25,947) | (23,133)
Product revenues | (2,741) | (2,091) | (5,995) | (4,540)
Total revenues | (14,526) | (12,955) | (31,942) | (27,673)
Cost of revenues (exclusive of items shown separately below) |  |  |  |
Service cost of revenues | (11,785) | (10,864) | (25,947) | (23,133)
Product cost of revenues | (2,741) | (2,091) | (5,995) | (4,540)
Total cost of revenues | (14,526) | (12,955) | (31,942) | (27,673)
Selling, general and administrative expenses | 0 | 0 | 0 | 0
Accretion of environmental liabilities | 0 | 0 | 0 | 0
Depreciation and amortization | 0 | 0 | 0 | 0
(Loss) income from operations | 0 | 0 | 0 | 0
Unrealized holding gains on available-for-sale investments | 0 | 0 | 0 | 0
Loss on early extinguishment of debt | 0 |  | 0 |
Gain on sale of business | 0 |  | 0 |
Interest (expense) income | 0 | 0 | 0 | 0
Equity in earnings of subsidiaries, net of taxes | (37,835) | (8,218) | (8,374) | 27,048
Intercompany interest income (expense) | 0 | 0 | 0 | 0
Income (loss) before (benefit) provision for income taxes | (37,835) | (8,218) | (8,374) | 27,048
(Benefit) provision for income taxes | 0 | 0 | 0 | 0
Net income (loss) | (37,835) | (8,218) | (8,374) | 27,048
Other comprehensive income | (27,935) | 1,775 | (39,018) | (72,989)
Comprehensive income | $ (65,770) | $ (6,443) | $ (47,392) | $ (45,941)

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