Time Certificates of Deposit (Schedule of Time Certifcates of Deposit Maturities) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule Maturity Abstract]
Time Deposits Scheduled Maturity, Next Twelve Months	$ 409,292
Time Deposits Scheduled Maturity, Year Two	188,978
Time Deposits Scheduled Maturity, Year Three	216,245
Time Deposits Scheduled Maturity, Year Four	85,922
Time Deposits Scheduled Maturity, Year Five	60,752
Time Deposits Scheduled Maturity, Thereafter	424
Time deposits	$ 961,613	$ 833,898
Weighted Average Rate [Abstract]
Time Deposits Weighted Average Rate, Next Twelve Months	0.73%
Time Deposits Weighted Average Rate, Year Two	1.12%
Time Deposits Weighted Average Rate, Year Three	1.54%
Time Deposits Weighted Average Rate, Year Four	1.61%
Time Deposits Weighted Average Rate, Year Five	1.77%
Time Deposits Weighted Average Rate, Thereafter	1.89%
Total Time Deposits Weighted Average Rate	1.13%