Leases (Schedule of Lease Costs and Other Lease Information) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating lease
Operating lease cost	$ 571,000	$ 363,000
Short-term lease cost	39,000	130,000
Variable lease cost	117,000	38,000
Sublease income
Total Rent and occupancy	727,000	531,000
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	614,000	382,000
Lease right-of-use assets obtained in exchange for new lease liabilities
Lease right-of-use assets obtained in exchange for new lease liabilities - operating leases	$ 1,915,000	$ 5,732,000