Leases (Schedule of Lease Costs and Other Lease Information) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating lease
Operating lease cost	$ 2,314,000	$ 1,764,000
Short-term lease cost	102,000	446,000
Variable lease cost	351,000	360,000
Sublease income
Total Rent and occupancy	2,767,000	2,570,000
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	2,457,000	1,876,000
Lease right-of-use assets obtained in exchange for new lease liabilities
Operating leases	$ 2,353,000	$ 5,732,000