Lease Commitments (Narrative) (Details)	3 Months Ended
	Mar. 31, 2019 USD ($) lease
Number of operating leases identified | lease	17
Operating lease related to occupancy expenses	$ 170,000
Operating lease related to equipment expenses	$ 44,000
Lessee, operating lease, lease not yet commenced, description	There are no new significant leases that have not yet commenced as of March 31, 2019.
Minimum
Operating lease, term of contract	1 year
Maximum
Operating lease, term of contract	7 years