Goodwill and Intangible Assets - Schedule of Amounts Recorded for Intangible Assets (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Dec. 31, 2018
Gross Amount		$ 19,054	$ 20,851
Accumulated Amortization		11,485	12,748
Net Amount		$ 7,569	8,103
Patent, Trademarks, Trade Names & URLs [Member]
Weighted Average Estimated Useful Lives (years)		5 years
Gross Amount	[1]	$ 5,308	5,304
Accumulated Amortization		1,621	1,502
Net Amount		$ 3,687	3,802
Customer Relationships [Member]
Weighted Average Estimated Useful Lives (years)		14 years
Gross Amount		$ 13,514	13,460
Accumulated Amortization		9,704	9,358
Net Amount		$ 3,810	4,102
Non-Compete Agreements [Member]
Weighted Average Estimated Useful Lives (years)		5 years
Gross Amount		$ 232	2,087
Accumulated Amortization		160	1,888
Net Amount		$ 72	$ 199

[1] Includes $2.9 million of trademarks with indefinite useful lives that are not amortized.