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CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Revenues: |  |  |  |
Rental income | $ 33,930 | $ 35,265 | $ 68,435 | $ 70,300
Interest income from mortgage loans | 7,007 | 6,625 | 13,823 | 13,373
Interest and other income | 535 | 578 | 1,024 | 1,417
Total revenues | 41,472 | 42,468 | 83,282 | 85,090
Expenses: |  |  |  |
Interest expense | 7,655 | 7,151 | 15,484 | 14,622
Depreciation and amortization | 9,268 | 9,308 | 18,712 | 18,667
Impairment charges |  | 1,880 |  | 1,880
Recovery for doubtful accounts | (38) | (5) | (30) | (43)
Transaction costs | 6 |  | 10 | 22
General and administrative expenses | 4,716 | 4,386 | 9,513 | 9,126
Total expenses | 21,607 | 22,720 | 43,689 | 44,274
Operating income | 19,865 | 19,748 | 39,593 | 40,816
Income from unconsolidated joint ventures | 726 | 575 | 1,357 | 1,020
Gain on sale of real estate, net | 48,345 | 5,054 | 48,345 | 5,054
Net income | 68,936 | 25,377 | 89,295 | 46,890
Income allocated to participating securities | (278) | (104) | (366) | (201)
Net income available to common stockholders | $ 68,658 | $ 25,273 | $ 88,929 | $ 46,689
Earnings per common share: |  |  |  |
Basic (in dollars per share) | $ 1.74 | $ 0.64 | $ 2.25 | $ 1.19
Diluted (in dollars per share) | $ 1.73 | $ 0.64 | $ 2.25 | $ 1.18
Weighted average shares used to calculate earnings per common share: |  |  |  |
Basic (in shares) | 39,471 | 39,414 | 39,461 | 39,390
Diluted (in shares) | 39,765 | 39,794 | 39,750 | 39,769
Dividends declared and paid per common share (in dollars per share) | $ 0.57 | $ 0.57 | $ 1.14 | $ 1.14
Comprehensive Income: |  |  |  |
Net income | $ 68,936 | $ 25,377 | $ 89,295 | $ 46,890
Comprehensive income | $ 68,936 | $ 25,377 | $ 89,295 | $ 46,890

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e557-108580 + Details
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- Definition Total costs of sales and operating expenses for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(12)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(10)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(13)(f)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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