v3.8.0.1

Summary of significant accounting policies - Segment and geographic information (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($)	Dec. 31, 2017 USD ($) segment	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Primary revenue source
Number of reportable segments | segment									1
Revenue	$ 57,348	$ 53,655	$ 49,033	$ 44,333	$ 44,974	$ 40,796	$ 39,075	$ 34,499	$ 204,369	$ 159,344	$ 139,626
DAS
Primary revenue source
Revenue									80,552	58,182	46,455
Military
Primary revenue source
Revenue									55,129	39,975	19,898
Wholesale-Wi-Fi
Primary revenue source
Revenue									31,529	22,221	21,923
Retail
Primary revenue source
Revenue									24,926	26,636	31,763
Advertising and other
Primary revenue source
Revenue									$ 12,233	$ 12,330	$ 19,587

X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

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X

- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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X

- References

No definition available.

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- Details

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X

- Details

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X

- Details

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