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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 25, 2018 | Oct. 01, 2018 | Jul. 24, 2018 | May 24, 2018 | Feb. 14, 2018 | Oct. 24, 2017 | Jul. 27, 2017 | May 24, 2017 | Feb. 15, 2017 | Oct. 31, 2016 | Oct. 01, 2016 | Jul. 27, 2016 | May 25, 2016 | Feb. 17, 2016 | 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: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,061,489,000 | $ 1,060,991,000 | $ 1,060,823,000 | $ 1,042,458,000 | $ 991,235,000 | $ 965,661,000 | $ 949,806,000 | $ 938,876,000 | $ 4,225,761,000 | $ 3,845,578,000 | $ 3,511,453,000
Operating Expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of sales (excluding depreciation and amortization) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,801,582,000 | 1,685,318,000 | 1,567,777,000
Selling, general and administrative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,038,975,000 | 984,965,000 | 988,332,000
Depreciation and amortization |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 639,514,000 | 522,376,000 | 452,326,000
Intangible impairments |  | $ 0 |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  | 3,011,000 |  |  |  | 0 | 3,011,000 | 0
Loss (Gain) on disposal/write-down of property, plant and equipment (excluding real estate), net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (9,818,000) | 799,000 | 1,412,000
Total Operating Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,470,253,000 | 3,196,469,000 | 3,009,847,000
Operating (Loss) Income |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 191,844,000 | 195,746,000 | 203,359,000 | 164,559,000 | 154,405,000 | 176,756,000 | 170,194,000 | 147,755,000 | 755,508,000 | 649,109,000 | 501,606,000
Interest Expense, Net (includes Interest Income of $7,558, $7,659 and $6,553 in 2016, 2017 and 2018, respectively) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 409,289,000 | 353,575,000 | 310,662,000
Other Expense (Income), Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (11,692,000) | 79,429,000 | 44,300,000
Income (Loss) from Continuing Operations Before Provision (Benefit) for Income Taxes and Gain on Sale of Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 357,911,000 | 216,105,000 | 146,644,000
Provision (Benefit) for Income Taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 36,263,000 | 25,947,000 | 44,944,000
Gain on Sale of Real Estate, Net of Tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (55,328,000) | (1,565,000) | (2,180,000)
Income (Loss) from Continuing Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 158,831,000 | 78,628,000 | 93,903,000 | 45,614,000 | 24,349,000 | 25,382,000 | 83,148,000 | 58,844,000 | 376,976,000 | 191,723,000 | 103,880,000
Income (Loss) from Discontinued Operations, Net of Tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | (11,605,000) | (360,000) | (462,000) | (2,870,000) | (1,058,000) | (2,026,000) | (337,000) | (12,427,000) | (6,291,000) | 3,353,000
Net Income (Loss) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 158,831,000 | 67,023,000 | 93,543,000 | 45,152,000 | 21,479,000 | 24,324,000 | 81,122,000 | 58,507,000 | 364,549,000 | 185,432,000 | 107,233,000
Less: Net Income (Loss) Attributable to Noncontrolling Interests |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,198,000 | 1,611,000 | 2,409,000
Net Income (Loss) Attributable to Iron Mountain Incorporated |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 158,118,000 | $ 67,148,000 | $ 93,401,000 | $ 44,684,000 | $ 22,721,000 | $ 24,345,000 | $ 78,630,000 | $ 58,125,000 | $ 363,351,000 | $ 183,821,000 | $ 104,824,000
Earnings (Losses) per Share—Basic: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (Loss) from Continuing Operations (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.55 | $ 0.28 | $ 0.33 | $ 0.16 | $ 0.09 | $ 0.10 | $ 0.31 | $ 0.22 | $ 1.31 | $ 0.71 | $ 0.41
Total Income (Loss) from Discontinued Operations, Net of Tax (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00 | (0.04) | 0.00 | 0.00 | (0.01) | 0.00 | (0.01) | 0.00 | (0.04) | (0.02) | 0.01
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.55 | 0.23 | 0.33 | 0.16 | 0.08 | 0.09 | 0.30 | 0.22 | 1.27 | 0.69 | 0.43
Earnings (Losses) per Share—Diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income (Loss) from Continuing Operations (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.55 | 0.27 | 0.33 | 0.16 | 0.09 | 0.10 | 0.30 | 0.22 | 1.31 | 0.71 | 0.41
Total Income (Loss) from Discontinued Operations, Net of Tax (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00 | (0.04) | 0.00 | 0.00 | (0.01) | 0.00 | (0.01) | 0.00 | (0.04) | (0.02) | 0.01
Net Income (Loss) Attributable to Iron Mountain Incorporated (in dollars per share) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.55 | $ 0.23 | $ 0.33 | $ 0.16 | $ 0.08 | $ 0.09 | $ 0.30 | $ 0.22 | $ 1.27 | $ 0.69 | $ 0.42
Weighted Average Common Shares Outstanding-Basic (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 285,913,000 | 265,898,000 | 246,178,000
Weighted Average Common Shares Outstanding-Diluted (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 286,652,588 | 266,844,584 | 247,266,998
Dividends Declared per Common Share (in dollars per share) | $ 0.6110 |  | $ 0.5875 | $ 0.5875 | $ 0.5875 | $ 0.5875 | $ 0.55 | $ 0.55 | $ 0.55 | $ 0.55 |  | $ 0.485 | $ 0.485 | $ 0.485 |  |  |  |  |  |  |  |  | $ 2.3753 | $ 2.2706 | $ 2.0427
Storage rental |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,622,455,000 | $ 2,377,557,000 | $ 2,142,905,000
Service |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,603,306,000 | $ 1,468,021,000 | $ 1,368,548,000

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