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v3.19.1

Fair Value Measurements - Fair Values of Financial Assets and Liabilities, Including Derivative Financial Instruments (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Earning assets |  |
Accrued interest receivable | $ 110,232 |
Accrued interest receivable, difference |  | $ 93,861
Income Taxes Receivable | 0 | 41,570
Total earning assets | 2,444,338 |
Total earning assets, difference |  | 2,152,077
Interest-bearing liabilities |  |
Long-term borrowings, difference | (29,422) | 5,373
Total interest-bearing liabilities, difference | (57,756) | 63,304
Excess of net asset fair value over carrying value | 2,386,582 | 2,215,381
Money-market and savings accounts |  |
Interest-bearing liabilities |  |
Deposits, difference |  | 19,151
Certificates of deposit |  |
Interest-bearing liabilities |  |
Deposits, difference | (26,878) | 38,780
Fair Value |  |
Earning assets |  |
Cash and cash equivalents | 2,156,257 | 2,559,106
Available-for-sale investments | 207,907 | 176,245
Accrued interest receivable | 1,409,728 | 1,285,842
Income Taxes Receivable | 43,124 | 39,207
Derivative instruments | 2,060 | 2,090
Total earning assets | 29,651,568 | 28,391,625
Interest-bearing liabilities |  |
Long-term borrowings | 4,505,828 | 4,278,931
Accrued interest payable | 68,746 | 61,341
Derivative instruments | 3,981 | 2,032
Total interest-bearing liabilities | 24,269,179 | 23,226,455
Fair Value | Money-market and savings accounts |  |
Interest-bearing liabilities |  |
Deposits | 9,690,078 | 9,370,957
Fair Value | Certificates of deposit |  |
Interest-bearing liabilities |  |
Deposits | 10,000,546 | 9,513,194
Carrying Value |  |
Earning assets |  |
Cash and cash equivalents | 2,156,257 | 2,559,106
Available-for-sale investments | 207,907 | 176,245
Accrued interest receivable | 1,299,496 | 1,191,981
Income Taxes Receivable | 43,124 | 39,207
Derivative instruments | 2,060 | 2,090
Total earning assets | 27,207,230 | 26,239,548
Interest-bearing liabilities |  |
Long-term borrowings | 4,476,406 | 4,284,304
Accrued interest payable | 68,746 | 61,341
Derivative instruments | 3,981 | 2,032
Total interest-bearing liabilities | 24,211,423 | 23,289,759
Carrying Value | Money-market and savings accounts |  |
Interest-bearing liabilities |  |
Deposits | 9,688,622 | 9,390,108
Deposits, difference | (1,456) |
Carrying Value | Certificates of deposit |  |
Interest-bearing liabilities |  |
Deposits | 9,973,668 | 9,551,974
Private Education Loans |  |
Earning assets |  |
Loans held for investment, net | 2,277,481 |
Loans held for investment, net, difference |  | 2,018,576
Private Education Loans | Fair Value |  |
Earning assets |  |
Loans held for investment, net | 23,854,015 | 22,313,419
Private Education Loans | Carrying Value |  |
Earning assets |  |
Loans held for investment, net | 21,576,534 | 20,294,843
Ffelp Loans |  |
Earning assets |  |
Loans held for investment, net | 11,867 |
Loans held for investment, net, difference |  | 11,296
Ffelp Loans | Fair Value |  |
Earning assets |  |
Loans held for investment, net | 841,070 | 859,185
Ffelp Loans | Carrying Value |  |
Earning assets |  |
Loans held for investment, net | 829,203 | 847,889
Personal Loans |  |
Earning assets |  |
Loans held for investment, net | 44,758 |
Loans held for investment, net, difference |  | 28,344
Personal Loans | Fair Value |  |
Earning assets |  |
Loans held for investment, net | 1,137,407 | 1,156,531
Personal Loans | Carrying Value |  |
Earning assets |  |
Loans held for investment, net | $ 1,092,649 | $ 1,128,187

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