Goodwill and Intangible Assets - Schedule of Amounts Recorded for Intangible Assets (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017
Gross Amount		$ 20,851	$ 23,649
Accumulated Amortization		12,748	12,559
Net Amount		$ 8,103	11,090
Patent, Trademarks, Trade Names & URLs [Member]
Weighted Average Estimated Useful Lives (years)		5 years
Gross Amount	[1]	$ 5,304	7,739
Accumulated Amortization		1,502	3,186
Net Amount		$ 3,802	4,553
Customer Relationships [Member]
Weighted Average Estimated Useful Lives (years)		14 years
Gross Amount		$ 13,460	13,533
Accumulated Amortization		9,358	7,799
Net Amount		$ 4,102	5,734
Non-Compete Agreements [Member]
Weighted Average Estimated Useful Lives (years)		4 years
Gross Amount		$ 2,087	2,377
Accumulated Amortization		1,888	1,574
Net Amount		$ 199	$ 803

[1] Included in the total amount for "Patent, trademarks & URLs" are $2.9 million of trademarks with indefinite useful lives that are not amortized.