XML 40 R45.htm IDEA: XBRL DOCUMENT v3.19.3

Geographical Data - Narrative (Details)	Sep. 30, 2019	Dec. 31, 2018
Segment Reporting [Abstract]
Long lived assets located in domestic markets	100.00%	100.00%

X

- Definition

Long Lived Assets Located in Domestic Markets

+ References

No definition available.

+ Details

Name:	glow_LongLivedAssetsLocatedinDomesticMarkets
Namespace Prefix:	glow_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

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