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Regulatory Matters (Details Textual)
$ in Millions
 12 Months Ended
Dec. 31, 2016
USD ($)
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]  
Description of regulatory requirements, capital adequacy purposes Cumulative preferred stock and trust preferred securities issued after May 19, 2010 will no longer qualify as Tier 1 capital, but such securities issued prior to May 19, 2010, including in the case of bank holding companies with less than $15 billion in total assets at that date, trust preferred securities issued prior to that date, will continue to count as Tier 1 capital subject to certain limitations. Tier 2 capital consists of the allowance for loan and lease losses in an amount not exceeding 1.25 percent of standardized risk-weighted assets, plus qualifying preferred stock, qualifying subordinated debt and qualifying total capital minority interest, net of Tier 2 investments in financial institutions.
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) 4.50%
Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) 6.00%
Total Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) 8.00%
Tier 1 Capital (to Average Assets), Minimum for capital adequacy purposes Ratio (as a percent) 4.00%
Capital conservation buffer percentage 2.50%
Incremental of capital conservation buffer percentage 0.625%
Tier 1 Capital (to Average Assets), Minimum to be well capitalized under prompt corrective action provisions Ratio (as a percent) 5.00%
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Ratio (as a percent) 6.50%
Total Capital (to Risk-Weighted Assets), Minimum to be well capitalized under prompt corrective action provisions Ratio (as a percent) 10.00%
Dividends $ 3.0
Dividends payable $ 6.6
Minimum [Member]  
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]  
Common Equity Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) 7.00%
Tier 1 Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) 8.50%
Total Capital (to Risk-Weighted Assets), Minimum for capital adequacy purposes Ratio (as a percent) 10.50%