Acquisitions, Goodwill and Other Intangible Assets (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Summary of intangible assets
Gross Carrying Amount	$ 27,039	$ 26,757
Accumulated Amortization	(7,235)	(5,363)
Net Carrying Amount	$ 19,804	$ 21,394
Client relationships
Summary of intangible assets
Weighted Average Amortization Period (years)	14 years 9 months 18 days	14 years 9 months 18 days
Gross Carrying Amount	$ 25,396	$ 25,396
Accumulated Amortization	(6,302)	(4,672)
Net Carrying Amount	$ 19,094	$ 20,724
Trade names
Summary of intangible assets
Weighted Average Amortization Period (years)	4 years 2 months 12 days	4 years 2 months 12 days
Gross Carrying Amount	$ 942	$ 942
Accumulated Amortization	(633)	(496)
Net Carrying Amount	$ 309	$ 446
Non-compete agreements
Summary of intangible assets
Weighted Average Amortization Period (years)	2 years 10 months 24 days	2 years 10 months 24 days
Gross Carrying Amount	$ 283	$ 283
Accumulated Amortization	(262)	(176)
Net Carrying Amount	$ 21	$ 107
Internally developed software
Summary of intangible assets
Weighted Average Amortization Period (years)	7 years	7 years
Gross Carrying Amount	$ 418	$ 136
Accumulated Amortization	(38)	(19)
Net Carrying Amount	$ 380	$ 117