Benefit Plans (Details Textuals) $ in Thousands	3 Months Ended
	Dec. 31, 2018 USD ($)
Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contribution to benefit plan	$ 3,100
Expected contribution to benefit plans for remainder of fiscal year	200
Postretirement Health Coverage [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contribution to benefit plan	110
Expected contribution to benefit plans for remainder of fiscal year	$ 110