Geographic Concentrations	12 Months Ended
Dec. 31, 2018
Risks And Uncertainties [Abstract]
Geographic Concentrations	(16) Geographic Concentrations Revenue by location is determined by the billing address of the customer. Approximately 81%, 90% and 90% of the Company’s revenue was from the United States for the fiscal years ended December 31, 2018, 2017 and 2016, respectively. No other individual country comprised more than 7% of total revenue for the fiscal years ended December 31, 2018, 2017 and 2016. Property and equipment by geographic location is based on the location of the legal entity that owns the asset. As of December 31, 2018 and 2017, more than 88% of the Company’s property and equipment was located in the United States.

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI http://asc.fasb.org/topic&trid=2134479

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