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Income Taxes - Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Deferred tax assets |  |
Allowance for loan losses | $ 14,304 | $ 14,097
Loans | 10,284 | 18,655
Deferred compensation | 12,050 | 10,001
Net unrealized losses on securities | 0 | 6,180
Impairment of assets | 1,108 | 1,280
Net operating loss carryforwards | 9,387 | 19,065
Lease liabilities under operating leases | 22,686 | 0
Other | 934 | 9,800
Total deferred tax assets | 70,753 | 79,078
Deferred tax liabilities |  |
Net unrealized gains on securities | 190 | 0
Investment in partnerships | 967 | 1,572
Fixed assets | 2,952 | 3,865
Mortgage servicing rights | 13,472 | 12,350
Junior subordinated debt | 2,304 | 1,607
Intangibles | 0 | 6,190
Lease right-of-use asset | 21,727 | 0
Other | 1,859 | 1,792
Total deferred tax liabilities | 43,471 | 27,376
Net deferred tax assets | $ 27,282 | $ 51,702

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