Leases (Details) - USD ($)	3 Months Ended	9 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Oct. 01, 2019
Leases [Abstract]
Operating Lease, Liability, Current	$ 10,752,000	$ 10,752,000
Finance Lease, Liability, Current	287,000	287,000
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	5,783,000	5,783,000
Lessee, Operating Lease, Liability, Payments, Due Year Two	9,826,000	9,826,000
Lessee, Operating Lease, Liability, Payments, Due Year Three	7,588,000	7,588,000
Lessee, Operating Lease, Liability, Payments, Due Year Four	4,796,000	4,796,000
Lessee, Operating Lease, Liability, Payments, Due Year Five	3,015,000	3,015,000
Lessee, Operating Lease, Liability, Payments, Due after Year Five	4,684,000	4,684,000
Lessee, Operating Lease, Liability, Payments, Due	35,692,000	35,692,000
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	3,298,000	3,298,000
Operating Lease, Liability	32,394,000	32,394,000	$ 32,237,000
Finance Lease, Liability, Payments, Due Next Twelve Months	147,000	147,000
Finance Lease, Liability, Payments, Due Year Two	291,000	291,000
Finance Lease, Liability, Payments, Due Year Three	267,000	267,000
Finance Lease, Liability, Payments, Due Year Four	261,000	261,000
Finance Lease, Liability, Payments, Due Year Five	214,000	214,000
Finance Lease, Liability, Payments, Due after Year Five	15,000	15,000
Finance Lease, Liability, Payment, Due	1,195,000	1,195,000
Finance Lease, Liability, Undiscounted Excess Amount	131,000	131,000
Finance Lease, Liability	1,064,000	1,064,000
Lessee, Total Lease, Liability, Payments, Remainder of Fiscal Year [Line Items]	5,930,000	5,930,000
Total Lease, Liability, Payments, Year Two	10,117,000	10,117,000
Total Lease, Liability, Payments, Year Three	7,855,000	7,855,000
Total Lease, Liability, Payments, Year Four	5,057,000	5,057,000
Total Lease, Liability, Payments, Year Five	3,229,000	3,229,000
Total Lease, Liability, Payments, Due After Year Five	4,699,000	4,699,000
Total Lease, Liability, Payments Due	36,887,000	36,887,000
Total Lease, Liability, Undiscounted Excess Amount	3,429,000	3,429,000
Total Lease, Liability	33,458,000	33,458,000
Lessee, Operating Lease, Lease Not yet Commenced, Description	432,000	432,000
Operating Lease, Cost	2,967,000	8,907,000
Finance Lease, Right-of-Use Asset, Amortization	64,000	124,000
Finance Lease, Interest Expense	15,000	30,000
Finance Lease, Cost	79,000	154,000
Short-term Lease, Cost	327,000	802,000
Variable Lease, Cost	190,000	618,000
Lease, Cost	3,563,000	10,481,000
Operating Lease, Payments	3,202,000	9,500,000
Finance Lease, Interest Payment on Liability	15,000	30,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	577,000	8,750,000
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 270,000	$ 1,198,000
Operating Lease, Weighted Average Remaining Lease Term	4 years 6 months	4 years 6 months
Finance Lease, Weighted Average Remaining Lease Term	4 years 4 months 24 days	4 years 4 months 24 days
Operating Lease, Weighted Average Discount Rate, Percent	4.00%	4.00%
Finance Lease, Weighted Average Discount Rate, Percent	5.50%	5.50%