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Consolidated Balance Sheets - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
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ASSETS |  |
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,511,727 and $7,481,015 at March 31, 2019 and December 31, 2018, respectively) | $ 21,741,265 | $ 21,649,896
Right of use assets - finance leases (amount related to VIEs of $21,000 at March 31, 2019) | 187,292 | 0
Right of use assets - operating leases | 151,166 | 0
Less: accumulated depreciation (amounts related to VIEs of $(999,691) and $(965,500) at March 31, 2019 and December 31, 2018, respectively) | (4,962,959) | (4,897,777)
Total real estate | 17,116,764 | 16,752,119
Cash and cash equivalents (amounts related to VIEs of $254,299 and $296,806 at March 31, 2019 and December 31, 2018, respectively) | 360,091 | 543,359
Cash held in escrows | 72,207 | 95,832
Investments in securities | 32,052 | 28,198
Tenant and other receivables (amounts related to VIEs of $15,782 and $15,519 at March 31, 2019 and December 31, 2018, respectively) | 92,462 | 86,629
Note receivable | 19,593 | 19,468
Related party note receivable | 80,000 | 80,000
Accrued rental income (amounts related to VIEs of $280,952 and $272,466 at March 31, 2019 and December 31, 2018, respectively) | 954,063 | 934,896
Deferred charges, net (amounts related to VIEs of $254,172 and $263,402 at March 31, 2019 and December 31, 2018, respectively) | 666,320 | 678,724
Prepaid expenses and other assets (amounts related to VIEs of $56,027 and $26,513 at March 31, 2019 and December 31, 2018, respectively) | 131,472 | 80,943
Investments in unconsolidated joint ventures | 976,580 | 956,309
Total assets | 20,501,604 | 20,256,477
Liabilities: |  |
Mortgage notes payable, net (amounts related to VIEs of $2,926,760 and $2,929,326 at March 31, 2019 and December 31, 2018, respectively) | 2,959,908 | 2,964,572
Unsecured senior notes, net | 7,547,043 | 7,544,697
Unsecured line of credit | 0 | 0
Unsecured term loan, net | 498,607 | 498,488
Lease liabilities - finance leases (amount related to VIEs of $20,067 at March 31, 2019) | 173,123 | 0
Lease liabilities - operating leases | 199,653 | 0
Accounts payable and accrued expenses (amounts related to VIEs of $79,984 and $75,786 at March 31, 2019 and December 31, 2018, respectively) | 328,885 | 276,645
Dividends and distributions payable | 165,352 | 165,114
Accrued interest payable | 89,171 | 89,267
Other liabilities (amounts related to VIEs of $182,729 and $200,344 at March 31, 2019 and December 31, 2018, respectively) | 369,575 | 503,726
Total liabilities | 12,331,317 | 12,042,509
Commitments and contingencies | 0 | 0
Equity / Capital: |  |
Excess stock, $0.01 par value, 150,000,000 shares authorized, none issued or outstanding | 0 | 0
Preferred stock, $.01 par value, 50,000,000 shares authorized |  |
5.25% Series B cumulative redeemable preferred stock/unit, liquidation preference $2,500 per share/unit, 92,000 shares authorized, 80,000 shares/units issued and outstanding at March 31, 2019 and December 31, 2018 | 200,000 | 200,000
Common stock, $0.01 par value, 250,000,000 shares authorized, 154,594,386 and 154,537,378 issued and 154,515,486 and 154,458,478 outstanding at March 31, 2019 and December 31, 2018, respectively | 1,545 | 1,545
Additional paid-in capital | 6,414,612 | 6,407,623
Dividends in excess of earnings | (728,083) | (675,534)
Treasury common stock at cost, 78,900 shares at March 31, 2019 and December 31, 2018 | (2,722) | (2,722)
Accumulated other comprehensive loss | (48,734) | (47,741)
Total stockholders’ equity attributable to Boston Properties, Inc. | 5,836,618 | 5,883,171
Noncontrolling interests: |  |
Common units of Boston Properties Limited Partnership | 623,061 | 619,352
Property partnerships | 1,710,608 | 1,711,445
Total equity / capital | 8,170,287 | 8,213,968
Total liabilities and equity / capital | 20,501,604 | 20,256,477
Boston Properties Limited Partnership |  |
ASSETS |  |
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,511,727 and $7,481,015 at March 31, 2019 and December 31, 2018, respectively) | 21,345,264 | 21,251,540
Right of use assets - finance leases (amount related to VIEs of $21,000 at March 31, 2019) | 187,292 | 0
Right of use assets - operating leases | 151,166 | 0
Less: accumulated depreciation (amounts related to VIEs of $(999,691) and $(965,500) at March 31, 2019 and December 31, 2018, respectively) | (4,864,334) | (4,800,475)
Total real estate | 16,819,388 | 16,451,065
Cash and cash equivalents (amounts related to VIEs of $254,299 and $296,806 at March 31, 2019 and December 31, 2018, respectively) | 360,091 | 543,359
Cash held in escrows | 72,207 | 95,832
Investments in securities | 32,052 | 28,198
Tenant and other receivables (amounts related to VIEs of $15,782 and $15,519 at March 31, 2019 and December 31, 2018, respectively) | 92,462 | 86,629
Note receivable | 19,593 | 19,468
Related party note receivable | 80,000 | 80,000
Accrued rental income (amounts related to VIEs of $280,952 and $272,466 at March 31, 2019 and December 31, 2018, respectively) | 954,063 | 934,896
Deferred charges, net (amounts related to VIEs of $254,172 and $263,402 at March 31, 2019 and December 31, 2018, respectively) | 666,320 | 678,724
Prepaid expenses and other assets (amounts related to VIEs of $56,027 and $26,513 at March 31, 2019 and December 31, 2018, respectively) | 131,472 | 80,943
Investments in unconsolidated joint ventures | 976,580 | 956,309
Total assets | 20,204,228 | 19,955,423
Liabilities: |  |
Mortgage notes payable, net (amounts related to VIEs of $2,926,760 and $2,929,326 at March 31, 2019 and December 31, 2018, respectively) | 2,959,908 | 2,964,572
Unsecured senior notes, net | 7,547,043 | 7,544,697
Unsecured line of credit | 0 | 0
Unsecured term loan, net | 498,607 | 498,488
Lease liabilities - finance leases (amount related to VIEs of $20,067 at March 31, 2019) | 173,123 | 0
Lease liabilities - operating leases | 199,653 | 0
Accounts payable and accrued expenses (amounts related to VIEs of $79,984 and $75,786 at March 31, 2019 and December 31, 2018, respectively) | 328,885 | 276,645
Dividends and distributions payable | 165,352 | 165,114
Accrued interest payable | 89,171 | 89,267
Other liabilities (amounts related to VIEs of $182,729 and $200,344 at March 31, 2019 and December 31, 2018, respectively) | 369,575 | 503,726
Total liabilities | 12,331,317 | 12,042,509
Commitments and contingencies | 0 | 0
Noncontrolling interest: |  |
Redeemable partnership units—16,844,947 and 16,783,558 common units and 1,187,919 and 991,577 long term incentive units outstanding at redemption value at March 31, 2019 and December 31, 2018, respectively | 2,414,240 | 2,000,591
Preferred stock, $.01 par value, 50,000,000 shares authorized |  |
5.25% Series B cumulative redeemable preferred stock/unit, liquidation preference $2,500 per share/unit, 92,000 shares authorized, 80,000 shares/units issued and outstanding at March 31, 2019 and December 31, 2018 | 193,623 | 193,623
Boston Properties Limited Partnership partners’ capital—1,725,484 and 1,722,336 general partner units and 152,790,002 and 152,736,142 limited partner units outstanding at March 31, 2019 and December 31, 2018, respectively | 3,603,174 | 4,054,996
Accumulated other comprehensive loss | (48,734) | (47,741)
Noncontrolling interests: |  |
Total partners' capital | 3,748,063 | 4,200,878
Noncontrolling interests in property partnerships | 1,710,608 | 1,711,445
Total equity / capital | 5,458,671 | 5,912,323
Total liabilities and equity / capital | $ 20,204,228 | $ 19,955,423

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- Definition Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19-26) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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