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CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Real estate portfolio: |  |
Accounted for using the operating method, net of accumulated depreciation and amortization | $ 6,853,757 | $ 6,403,638
Accounted for using the direct financing method | 8,069 | 9,650
Real estate held for sale | 13,606 | 29,373
Cash and cash equivalents | 114,267 | 1,364
Receivables, net of allowance of $2,273 and $1,119, respectively | 3,797 | 4,317
Accrued rental income, net of allowance of $1,842 and $1,936, respectively | 25,387 | 25,916
Debt costs, net of accumulated amortization of $14,118 and $12,667, respectively | 4,081 | 5,380
Other assets | 80,474 | 80,896
Total assets | 7,103,438 | 6,560,534
Liabilities: |  |
Line of credit payable | 0 | 120,500
Mortgages payable, including unamortized premium and net of unamortized debt costs | 12,694 | 13,300
Notes payable, net of unamortized discount and unamortized debt costs | 2,838,701 | 2,446,407
Accrued interest payable | 19,519 | 20,311
Other liabilities | 77,919 | 119,106
Total liabilities | 2,948,833 | 2,719,624
Commitments and contingencies (Note 18) |  |
Stockholders’ equity: |  |
Common stock, $0.01 par value. Authorized 375,000,000 shares; 161,503,585 and 153,577,028 shares issued and outstanding, respectively | 1,616 | 1,537
Capital in excess of par value | 3,950,055 | 3,599,475
Accumulated deficit | (424,225) | (379,181)
Accumulated other comprehensive income (loss) | (5,696) | (13,738)
Total stockholders’ equity of NNN | 4,154,250 | 3,840,593
Noncontrolling interests | 355 | 317
Total equity | 4,154,605 | 3,840,910
Total liabilities and equity | 7,103,438 | 6,560,534
5.700% Series E, 115,000 shares issued and outstanding, at stated liquidation value of $2,500 per share |  |
Stockholders’ equity: |  |
Preferred stock, $0.01 par value. Authorized 15,000,000 shares | 287,500 | 287,500
5.200% Series F, 138,000 shares issued and outstanding, at stated liquidation value of $2,500 per share |  |
Stockholders’ equity: |  |
Preferred stock, $0.01 par value. Authorized 15,000,000 shares | $ 345,000 | $ 345,000

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- Definition Carrying amount as of the balance sheet date, net of allowance for doubtful accounts, of account and note receivables due from other than related parties. + 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 210.5-02.3-4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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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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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + 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(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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