XML 36 R27.htm IDEA: XBRL DOCUMENT v3.19.1

Segment Reporting and Geographic Information (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Revenues by Geographic Region

Revenues by geographic region are as follows (in percentages):

		Three months ended March 31,
		2018				2019
United States			99	%			99	%
Canada			1	%			1	%
Other countries		*				*
			100	%			100	%

* Less than 1% of revenue.

X

- Definition

Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 41
-Subparagraph a
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e9038-108599

+ Details

Name:	us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration