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Earnings per Share / Unit - Computation of Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Numerator: |  |  |  |
Net income (loss) | $ 19,097 | $ (167) | $ 45,959 | $ 1,108
Less: |  |  |  |
Noncontrolling interest | 309 | 7,316 | (22) | 10,391
Dividends on preferred shares/Preferred distributions | 17,253 | 13,669 | 46,122 | 26,650
Allocation to participating securities | 12 | 0 | 0 | 0
Net income (loss) attributable to common shareholders/unitholders | 1,523 | (21,152) | (141) | (35,933)
Add back: |  |  |  |
Dividends on participating preferred shares/units | 5,569 | 0 | 0 | 0
Remeasurement of participating preferred shares/units | (8,391) | 0 | 0 | 0
Numerator for diluted loss per common share/unit | $ (1,299) | $ (21,152) | $ (141) | $ (35,933)
Denominator |  |  |  |
Weighted-average common shares outstanding - basic (in shares) | 266,767,313 | 238,401,343 | 256,768,343 | 232,036,802
Participating preferred shares/units (in shares) | 22,385,747 | 0 | 0 | 0
Weighted-average common shares outstanding–diluted (in shares) | 289,153,060 | 238,401,343 | 256,768,343 | 232,036,802
Net income (loss) attributable to common shareholders/unitholders per share/unit |  |  |  |
Basic (in dollars per share) | $ 0.01 | $ (0.09) | $ 0.00 | $ (0.15)
Diluted (in dollars per share) | $ 0.00 | $ (0.09) | $ 0.00 | $ (0.15)
American Homes 4 Rent, L.P. |  |  |  |
Numerator: |  |  |  |
Net income (loss) | $ 19,097 | $ (167) | $ 45,959 | $ 1,108
Less: |  |  |  |
Noncontrolling interest | (31) | (226) | 8 | (446)
Dividends on preferred shares/Preferred distributions | 17,253 | 13,669 | 46,122 | 26,650
Income allocated to limited partners | 0 | 10,915 | 0 | 16,478
Allocation to participating securities | 12 | 0 | 0 | 0
Net income (loss) attributable to common shareholders/unitholders | 1,863 | (24,525) | (171) | (41,574)
Add back: |  |  |  |
Dividends on participating preferred shares/units | 5,569 | 0 | 0 | 0
Remeasurement of participating preferred shares/units | (8,391) | 0 | 0 | 0
Numerator for diluted loss per common share/unit | $ (959) | $ (24,525) | $ (171) | $ (41,574)
Denominator |  |  |  |
Participating preferred shares/units (in shares) | 22,385,747 | 0 | 0 | 0
Weighted-average common units outstanding - basic (in shares) | 322,303,138 | 285,208,489 | 312,315,728 | 271,994,345
Weighted-average common units outstanding–diluted (in shares) | 344,688,885 | 285,208,489 | 312,315,728 | 271,994,345
Net income (loss) attributable to common shareholders/unitholders per share/unit |  |  |  |
Basic (in dollars per share) | $ 0.01 | $ (0.09) | $ 0.00 | $ (0.15)
Diluted (in dollars per share) | $ 0.00 | $ (0.09) | $ 0.00 | $ (0.15)

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