Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of intangible assets

Intangible assets consist primarily of software development costs and customer and reseller relationships which are amortized over the estimated useful life, generally on a straight-line basis with the exception of customer relationships, which are generally amortized straight line over the related asset’s pattern of economic benefit.(in thousands)

	March 31			December 31
	2017			2016
Horizon software	$	18,400		$	18,634
ZTEsoft Telecom software		441			438
Contractual relationships		885			885
		19,726			19,957
Less accumulated amortization		(11,843	)		(11,550	)
Intangible assets, net	$	7,883		$	8,407