Other Intangible, Net and Goodwill (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Change In Gross Amount of Identifiable Intangible Assets			$ 0
Finite-Lived Intangible Assets, Amortization Expense	$ 700	$ 500	1,300	$ 1,000
Finite-Lived Intangible Assets [Line Items]
Gross Amount	25,900		25,900
Accumulated Amortization	10,200		10,200
Net Intangible Assets	15,700		$ 15,700
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			20 years
Gross Amount	13,600		$ 13,600
Accumulated Amortization	1,987		1,987
Net Intangible Assets	11,613		11,613
Tradename
Finite-Lived Intangible Assets [Line Items]
Gross Amount	8,100		8,100
Accumulated Amortization	6,404		6,404
Net Intangible Assets	1,696		1,696
Covenants Not to Compete
Finite-Lived Intangible Assets [Line Items]
Gross Amount	4,200		4,200
Accumulated Amortization	1,809		1,809
Net Intangible Assets	$ 2,391		$ 2,391
Maximum [Member] | Tradename
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			6 years
Maximum [Member] | Covenants Not to Compete
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			10 years
Minimum [Member] | Tradename
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			6 months
Minimum [Member] | Covenants Not to Compete
Finite-Lived Intangible Assets [Line Items]
Amortization period (years)			1 year