Goodwill and Other Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Amortization expense	$ 1,655	$ 1,762	$ 5,046	$ 5,322
Non-compete agreements
Fully amortized intangible assets	124		124
Trademarks and trade names
Fully amortized intangible assets	$ 723		$ 723
Minimum
Finite lived intangible asset, useful life			4 years
Maximum
Finite lived intangible asset, useful life			25 years
Weighted Average
Finite lived intangible asset, useful life			15 years
Weighted Average | Non-compete agreements
Finite lived intangible asset, useful life			4 years		4 years
Weighted Average | Trademarks and trade names
Finite lived intangible asset, useful life			16 years		15 years