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CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Interest income: |  |  |  |
Loans | $ 477,833 | $ 564,698 | $ 1,513,279 | $ 1,672,082
Investments | 3,327 | 2,145 | 9,086 | 5,272
Cash and cash equivalents | 1,218 | 23,548 | 19,740 | 53,212
Total interest income | 482,378 | 590,391 | 1,542,105 | 1,730,566
Interest expense: |  |  |  |
Deposits | 83,500 | 143,393 | 318,858 | 405,977
Interest expense on short-term borrowings | 3,424 | 1,400 | 11,041 | 3,700
Interest expense on long-term borrowings | 30,887 | 40,533 | 98,750 | 116,675
Total interest expense | 117,811 | 185,326 | 428,649 | 526,352
Net interest income | 364,567 | 405,065 | 1,113,456 | 1,204,214
Less: provisions for credit losses | (3,640) | 99,526 | 409,505 | 256,691
Net interest income after provisions for credit losses | 368,207 | 305,539 | 703,951 | 947,523
Non-interest income (loss): |  |  |  |
Gains (losses) on sales of loans, net | (4) | 0 | 238,562 | 0
Gains (loss) on derivatives and hedging activities, net | (15) | 1,961 | 49,408 | 21,460
Other income | 9,646 | 15,280 | 42,547 | 31,313
Total non-interest income | 9,627 | 17,241 | 330,517 | 52,773
Operating expenses |  |  |  |
Compensation and benefits | 62,743 | 64,980 | 219,413 | 210,213
FDIC assessment fees | 1,455 | 8,814 | 17,508 | 23,788
Other operating expenses | 63,292 | 79,827 | 179,424 | 198,573
Total operating expenses | 127,490 | 153,621 | 416,345 | 432,574
Restructuring expenses | 24,127 | 0 | 24,127 | 0
Total non-interest expenses | 151,617 | 153,621 | 440,472 | 432,574
Income before income tax expense | 226,217 | 169,159 | 593,996 | 567,722
Income tax expense | 55,189 | 40,701 | 146,006 | 130,798
Net income | 171,028 | 128,458 | 447,990 | 436,924
Preferred stock dividends | 2,058 | 4,153 | 8,000 | 12,952
Net income attributable to SLM Corporation common stock | $ 168,970 | $ 124,305 | $ 439,990 | $ 423,972
Basic earnings per common share attributable to SLM Corporation (in dollars per share) | $ 0.45 | $ 0.29 | $ 1.14 | $ 0.99
Average common shares outstanding (in shares) | 375,094,000 | 424,149,000 | 386,587,000 | 429,295,000
Diluted earnings per common share attributable to SLM Corporation (in dollars per share) | $ 0.45 | $ 0.29 | $ 1.13 | $ 0.98
Average common and common equivalent shares outstanding (in shares) | 377,918,000 | 427,336,000 | 389,391,000 | 432,572,000
Declared dividends per common share attributable to SLM Corporation (in dollars per share) | $ 0 | $ 0 | $ 0.09 | $ 0.09

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