Employee Benefit Plans (Detail Textuals 1) - Other Postretirement Benefit Plans - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Future obligation of benefits	$ 614,000	$ 498,000
Amortization rate per year	91,000
Estimated future annual expenses included in accumulated other comprehensive loss, net of deferred taxes	$ 20,000	$ 3,000