Lease Commitments (Narrative) (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($) lease
Number of operating leases identified | lease		16
Operating lease related to occupancy expenses	$ 186,000	$ 548,000
Operating lease related to equipment expenses	$ 34,000	$ 119,000
Minimum
Operating lease, term of contract	1 year	1 year
Maximum
Operating lease, term of contract	7 years	7 years