Employee Benefit Plans (Detail Textuals 1) - Other Postretirement Benefit Plans - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Future obligation of benefits	$ 644,000	$ 736,000
Additional expense	100,000
Estimated future annual expenses associated with the plan are immaterial. Included in accumulated other comprehensive income (loss)	$ 67,000	$ (12,000)