Summary of Significant Accounting Policies, Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Capitalized software costs	$ 2,700	$ 2,100
Amortization of capitalized software costs	1,100	800
Impairment of intangible assets	500	0
Components of identifiable intangible assets, including capitalized internal software development costs [Abstract]
Intangible assets, gross	16,074	13,892
Less accumulated amortization	(5,508)	(3,394)
Finite-lived intangible assets, net	10,566	10,498
Trademarks, trade names (non-amortizable)	400	400
Total intangible assets, net	10,966	10,898
Future amortization of intangible assets [Abstract]
2017	2,219
2018	2,054
2019	1,616
2020	1,396
2021	1,031
Thereafter	2,250
Finite-lived intangible assets, net	10,566	10,498
Acquired and Internally Developed Software Costs [Member]
Components of identifiable intangible assets, including capitalized internal software development costs [Abstract]
Intangible assets, gross	$ 15,884	13,702
Acquired and Internally Developed Software Costs [Member] | Minimum [Member]
Components of identifiable intangible assets, including capitalized internal software development costs [Abstract]
Estimated Useful Life	3 years
Acquired and Internally Developed Software Costs [Member] | Maximum [Member]
Components of identifiable intangible assets, including capitalized internal software development costs [Abstract]
Estimated Useful Life	7 years
Customer Relationships [Member]
Components of identifiable intangible assets, including capitalized internal software development costs [Abstract]
Intangible assets, gross	$ 160	160
Estimated Useful Life	7 years
Non-compete Agreement [Member]
Components of identifiable intangible assets, including capitalized internal software development costs [Abstract]
Intangible assets, gross	$ 30	$ 30
Estimated Useful Life	1 year