Securities (Details Textual) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	$ 2,000		$ 2,000		$ 1,500
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Period Increase (Decrease)	0	$ 0	0	$ 0
Debt Securities, Available-for-sale	391,975		391,975		442,752
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	0		0		0
Securities (Textual) [Abstract]
Callable Securities in Investment Portfolio	17,900		17,900
Pledged Financial Instruments, Not Separately Reported, Securities	340,600		340,600		361,100
Investments in obligations of individual states, counties or municipalities which exceed 10% of equity	0		0		0
Equity Securities, FV-NI	$ 21,021		$ 21,021		$ 19,477