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Fair Value Measurements (Details 7) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Fair values of defined benefit pension plan assets by category of the firm |  |
Securities held to maturity | $ 0 | $ 356,282
Securities available for sale, at fair value | 671,488 | 674,248
Mortgage loans held for sale | 108,316 | 177,866
Quoted Prices In Active Markets for Identical Assets (Level 1) |  |
Fair values of defined benefit pension plan assets by category of the firm |  |
Cash and cash equivalents | 281,453 | 306,224
Securities held to maturity |  | 0
Securities available for sale, at fair value | 0 | 0
Mortgage loans held for sale | 0 | 0
Loans, net | 0 | 0
Mortgage servicing rights | 0 | 0
Derivative instruments | 0 | 0
Financial liabilities |  |
Deposits | 6,114,391 | 5,438,384
Short-term borrowings | 89,814 | 109,676
Other long-term borrowings | 98 | 147
Federal Home Loan Bank advances | 0 | 0
Junior subordinated debentures | 0 | 0
Subordinated notes | 0 | 0
Derivative instruments | 0 | 0
Significant Other Observable Inputs (Level 2) |  |
Fair values of defined benefit pension plan assets by category of the firm |  |
Cash and cash equivalents | 0 | 0
Securities held to maturity |  | 362,893
Securities available for sale, at fair value | 662,100 | 655,859
Mortgage loans held for sale | 108,316 | 177,866
Loans, net | 0 | 0
Mortgage servicing rights | 0 | 0
Derivative instruments | 5,977 | 9,108
Financial liabilities |  |
Deposits | 1,809,085 | 1,631,027
Short-term borrowings | 0 | 0
Other long-term borrowings | 0 | 0
Federal Home Loan Bank advances | 7,661 | 8,777
Junior subordinated debentures | 69,702 | 73,301
Subordinated notes | 118,650 | 101,000
Derivative instruments | 6,039 | 5,910
Significant Unobservable Inputs (Level 3) |  |
Fair values of defined benefit pension plan assets by category of the firm |  |
Cash and cash equivalents | 0 | 0
Securities held to maturity |  | 0
Securities available for sale, at fair value | 9,388 | 18,389
Mortgage loans held for sale | 0 | 0
Loans, net | 7,514,185 | 5,989,790
Mortgage servicing rights | 47,868 | 32,064
Derivative instruments | 0 | 0
Financial liabilities |  |
Deposits | 0 | 0
Short-term borrowings | 0 | 0
Other long-term borrowings | 0 | 0
Federal Home Loan Bank advances | 0 | 0
Junior subordinated debentures | 0 | 0
Subordinated notes | 0 | 0
Derivative instruments | 0 | 0
Carrying Value |  |
Fair values of defined benefit pension plan assets by category of the firm |  |
Cash and cash equivalents | 281,453 | 306,224
Securities held to maturity |  | 356,282
Securities available for sale, at fair value | 671,488 | 674,248
Mortgage loans held for sale | 108,316 | 177,866
Loans, net | 7,574,111 | 6,159,972
Mortgage servicing rights | 39,339 | 26,302
Derivative instruments | 5,977 | 9,108
Financial liabilities |  |
Deposits | 7,921,075 | 7,059,137
Short-term borrowings | 89,814 | 109,676
Other long-term borrowings | 98 | 147
Federal Home Loan Bank advances | 7,493 | 8,542
Junior subordinated debentures | 85,881 | 95,643
Subordinated notes | 114,074 | 98,127
Derivative instruments | 6,039 | 5,910
Fair Value |  |
Fair values of defined benefit pension plan assets by category of the firm |  |
Cash and cash equivalents | 281,453 | 306,224
Securities held to maturity |  | 362,893
Securities available for sale, at fair value | 671,488 | 674,248
Mortgage loans held for sale | 108,316 | 177,866
Loans, net | 7,514,185 | 5,989,790
Mortgage servicing rights | 47,868 | 32,064
Derivative instruments | 5,977 | 9,108
Financial liabilities |  |
Deposits | 7,923,476 | 7,069,411
Short-term borrowings | 89,814 | 109,676
Other long-term borrowings | 98 | 147
Federal Home Loan Bank advances | 7,661 | 8,777
Junior subordinated debentures | 69,702 | 73,301
Subordinated notes | 118,650 | 101,000
Derivative instruments | $ 6,039 | $ 5,910

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