Employee Benefit Plans (Detail Textuals 1) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Proceeds from benefit plan refinancing arrangement	$ 2,218,000
Supplemental Retirement Plan ('SERP')
Defined Benefit Plan Disclosure [Line Items]
Variable life insurance policies investment amount	47,900,000	$ 51,000,000
Fair value of plan assets	22,815,000	23,463,000
Trading (losses) gains related to the SERP assets	(2,282,000)	$ 3,156,000
Proceeds from benefit plan refinancing arrangement	2,218,000
Life insurance cash surrender value	1,182,000
Life insurance tax-free gains	$ 1,020,000