v3.10.0.1

Summary of significant accounting policies - Revenue disaggregated by product offerings (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) segment	Jun. 30, 2017 USD ($)
Primary revenue source
Number of reportable segments | segment			1
Revenue	$ 59,601	$ 49,033	$ 117,760	$ 93,366
DAS
Primary revenue source
Revenue	21,885	18,552	45,530	34,808
Military
Primary revenue source
Revenue	16,735	13,542	32,589	26,083
Wholesale-Wi-Fi
Primary revenue source
Revenue	13,530	7,300	24,679	14,131
Retail
Primary revenue source
Revenue	4,566	6,358	9,876	12,773
Advertising and other
Primary revenue source
Revenue	$ 2,885	$ 3,281	$ 5,086	$ 5,571

X

- Definition

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+ References

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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