Intangible Assets (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Amortization expense for intangibles	$ 800,000	$ 0	$ 0
Intangible assets estimated amortization expense, year one	800,000
Intangible assets estimated amortization expense, year two	800,000
Intangible assets estimated amortization expense, year three	800,000
Intangible assets estimated amortization expense, year four	800,000
Intangible assets estimated amortization expense, year five	$ 800,000