Leases (Details) - USD ($)	3 Months Ended		6 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2020	Oct. 01, 2019
Leases [Abstract]
Operating Lease, Liability, Current	$ 11,188,000		$ 11,188,000
Finance Lease, Liability, Current	226,000		226,000
Lessee, Operating Lease, Liability, Payments, Due Next Twelve Months	6,058,000		6,058,000
Lessee, Operating Lease, Liability, Payments, Due Year Two	10,148,000		10,148,000
Lessee, Operating Lease, Liability, Payments, Due Year Three	8,045,000		8,045,000
Lessee, Operating Lease, Liability, Payments, Due Year Four	5,442,000		5,442,000
Lessee, Operating Lease, Liability, Payments, Due Year Five	3,308,000		3,308,000
Lessee, Operating Lease, Liability, Payments, Due after Year Five	5,224,000		5,224,000
Lessee, Operating Lease, Liability, Payments, Due	38,225,000		38,225,000
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	3,581,000		3,581,000
Operating Lease, Liability	34,644,000		34,644,000	$ 32,237,000
Finance Lease, Liability, Payments, Due Next Twelve Months	116,000		116,000
Finance Lease, Liability, Payments, Due Year Two	234,000		234,000
Finance Lease, Liability, Payments, Due Year Three	208,000		208,000
Finance Lease, Liability, Payments, Due Year Four	206,000		206,000
Finance Lease, Liability, Payments, Due Year Five	173,000		173,000
Finance Lease, Liability, Payments, Due after Year Five	29,000		29,000
Finance Lease, Liability, Payment, Due	966,000		966,000
Finance Lease, Liability, Undiscounted Excess Amount	110,000		110,000
Finance Lease, Liability	856,000		856,000
Lessee, Total Lease, Liability, Payments, Remainder of Fiscal Year [Line Items]	6,174,000		6,174,000
Total Lease, Liability, Payments, Year Two	10,382,000		10,382,000
Total Lease, Liability, Payments, Year Three	8,253,000		8,253,000
Total Lease, Liability, Payments, Year Four	5,648,000		5,648,000
Total Lease, Liability, Payments, Year Five	3,481,000		3,481,000
Total Lease, Liability, Payments, Due After Year Five	5,253,000		5,253,000
Total Lease, Liability, Payments Due	39,191,000		39,191,000
Total Lease, Liability, Undiscounted Excess Amount	3,691,000		3,691,000
Total Lease, Liability	35,500,000		35,500,000
Lessee, Operating Lease, Lease Not yet Commenced, Description	508,000		508,000
Operating Lease, Cost	2,917,000		5,940,000
Finance Lease, Right-of-Use Asset, Amortization	60,000		60,000
Finance Lease, Interest Expense	15,000		15,000
Finance Lease, Cost	75,000		75,000
Short-term Lease, Cost	279,000	$ 475,000
Variable Lease, Cost	251,000		428,000
Lease, Cost	3,522,000		6,918,000
Operating Lease, Payments	3,181,000		6,298,000
Finance Lease, Interest Payment on Liability	15,000		15,000
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	2,557,000		8,144,000
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 497,000		$ 928,000
Operating Lease, Weighted Average Remaining Lease Term	4 years 7 months 6 days		4 years 7 months 6 days
Finance Lease, Weighted Average Remaining Lease Term	4 years 6 months		4 years 6 months
Operating Lease, Weighted Average Discount Rate, Percent	4.00%		4.00%
Finance Lease, Weighted Average Discount Rate, Percent	5.60%		5.60%