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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2016 USD ($) community | Dec. 31, 2016 USD ($) community home | Dec. 31, 2016 USD ($) community shares | Dec. 31, 2016 USD ($) community | Dec. 31, 2016 USD ($) community building | Dec. 31, 2015 USD ($) shares | Dec. 31, 2014 USD ($) shares | Sep. 30, 2016 USD ($) | Jan. 31, 2016 USD ($)
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Common stock issued through the dividend reinvestment plan (in shares) | shares |  |  | 2,396 |  |  | 2,142 | 2,434 |  |
Common stock issued through the dividend reinvestment plan |  |  |  | $ 424 |  | $ 372 | $ 335 |  |
Number of shares withheld to satisfy employees' tax withholding and other liabilities | shares |  |  | 53,453 |  |  | 45,090 | 55,523 |  |
Shares withheld to satisfy employees' tax withholding and other liabilities, value |  |  |  | 8,356 |  | $ 5,979 | $ 4,746 |  |
Number of shares forfeited | shares |  |  | 4,262 |  |  |  |  |  |
Shares cancelled upon forfeiture |  |  |  | 694 |  | 726 | 2,938 |  |
Common stock dividends declared but not paid | $ 185,397 | $ 185,397 | $ 185,397 | 185,397 | $ 185,397 | 171,257 | 153,207 |  |
Change in redemption value of redeemable noncontrolling interest |  |  |  | (1,489) |  | (965) | (3,709) |  |
Increase (Decrease) in Derivative Assets |  |  |  | 12,085 |  |  |  |  |
Income (loss) on cash flow hedges |  |  |  | (5,556) |  | 5,354 | (121) |  |
Cash flow hedge losses reclassified to earnings |  |  |  | 6,433 |  | 5,774 | 6,237 |  |
Casualty and impairment (gain) loss, net |  |  |  | (3,935) |  | (10,542) | 0 |  |
Capital Leased Assets, Gross | $ 39,015 | $ 39,015 | $ 39,015 | $ 39,015 | $ 39,015 | $ 39,019 |  |  |
Noncontrolling interests derecognition |  |  |  |  |  |  | $ (17,816) |  |
Number of owned communities under construction | community | 27 | 27 | 27 | 27 | 27 |  |  |  |
Restricted Stock and Restricted Stock Converted From Performance Shares [Member] |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Granted (in shares) | shares |  |  | 197,018 |  |  | 157,779 | 115,163 |  |
Restricted Stock Converted From Performance Shares [Member] |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Granted (in shares) | shares |  |  | 115,618 |  |  | 95,826 | 16,209 |  |
Restricted stock |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Granted (in shares) | shares |  |  | 81,400 |  |  | 61,953 | 98,954 |  |
Fair value of shares issued |  |  |  | $ 13,217 |  | $ 10,720 | $ 12,799 |  |
Number of shares forfeited | shares |  |  | 4,262 |  |  | 1,529 | 7,970 |  |
Accumulated earnings less dividends |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Change in redemption value of redeemable noncontrolling interest |  |  |  | (1,489) |  | $ (2,053) | $ (3,709) |  |
Accumulated other comprehensive loss |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Income (loss) on cash flow hedges |  |  |  | (5,556) |  | 5,354 | (121) |  |
Cash flow hedge losses reclassified to earnings |  |  |  | 6,433 |  | 5,774 | $ 6,237 |  |
Deferred Compensation, Share-based Payments [Member] | Non Employee Director [Member] |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Fair value of shares issued |  |  |  | 3,894 |  | 3,552 |  |  |
Avalon at Edgewater [Member] |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Casualty and impairment (gain) loss, net |  |  |  | (8,702) |  | (15,538) |  |  |
Avalon Bloomfield Station |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Capital Leased Assets, Gross |  |  |  |  |  | 3,299 |  |  |
New England [Member] |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Casualty and impairment (gain) loss, net |  |  |  |  |  | 4,195 |  |  |
New England [Member] | Avalon at Edgewater [Member] |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Casualty and impairment (gain) loss, net |  |  |  |  |  | $ 26,039 |  |  |
Non Employee Director [Member] | Deferred Compensation, Share-based Payments [Member] |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Granted (in shares) | shares |  |  | 44,327 |  |  | 46,589 |  |  |
Secured notes | Notes Payable Maturities 2020 [Member] | Avalon Hoboken [Member] |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Assumed principal amount of indebtedness |  |  |  |  |  |  |  |  | $ 67,904
Secured notes | Notes Payable Maturities 2019 [Member] | Avalon Columbia Pike [Member] |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Assumed principal amount of indebtedness |  |  |  |  |  |  |  | $ 70,507 |
West Hollywood Affordable [Member] |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Number of apartment buildings sold | 1 |  |  |  | 1 |  |  |  |
Number of Apartment Homes Sold | home |  | 77 |  |  |  |  |  |  |
Accounts Receivable, Net | $ 18,643 | $ 18,643 | $ 18,643 | $ 18,643 | $ 18,643 |  |  |  |
Development Communities [Member] | Avalon West Hollywood [Member] |  |  |  |  |  |  |  |  |
Supplemental disclosures of non-cash investing and financing activities |  |  |  |  |  |  |  |  |
Number of owned communities under construction | community | 1 | 1 | 1 | 1 | 1 |  |  |  |

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