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Derivatives and Hedging Activities (Textual) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Derivative |  |  |
Preferred Stock, Shares Issued | 867,846 |  |
Preferred Stock, Redemption Price Per Share | $ 50.00 |  |
Embedded Derivative, Fair Value of Embedded Derivative Asset | $ 10,800,000 |  |
Other Credit Enhancements |  |  |
Derivative |  |  |
Credit risk related contingent features termination value | 7,500,000 |  |
Termination |  |  |
Derivative |  |  |
Fair value of credit risk derivatives | 7,600,000 |  |
Net liability position |  |  |
Derivative |  |  |
Credit risk related contingent features termination value | 7,500,000 |  |
Interest Expense |  |  |
Derivative |  |  |
Change in fair value of derivatives, ineffective portion | 54,000 | $ 100,000 | $ 157,000
Designated as Hedging Instrument | Interest Expense |  |  |
Derivative |  |  |
Change in fair value of interest rate derivatives included in AOCI and expected to be reclassified in the next 12 months | 1,200,000 |  |
Other Assets |  |  |
Derivative |  |  |
Interest Rate Cash Flow Hedge Asset at Fair Value | 2,364,000 | 6,000 |
Interest Rate Swap |  |  |
Derivative |  |  |
Fair market value of interest rate swaps | 7,562,000 | 10,358,000 |
Parent Company [Member] |  |  |
Derivative |  |  |
Fair market value of interest rate swaps | 7,562,000 | 10,358,000 |
Interest Rate Cash Flow Hedge Asset at Fair Value | $ 2,364,000,000 | $ 6,000 |
Preferred Stock, Shares Issued | 867,846 | 0 |

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