Revenues - (Tables)

6 Months Ended

Jun. 30, 2019

Revenue Recognition [Abstract]

Product revenue by type

The following table summarizes the Company’s product revenues disaggregated by revenue type for the three and six months ended June 30, 2019 and 2018:

	Three months ended June 30,				Six months ended June 30,
	2019		2018		2019		2018
	(In thousands)
Hardware and software	$	135,022	$	112,031	$	255,243	$	219,482
Consumables	19,416		19,670		40,503		39,108
Other	3,941		2,935		8,243		6,705
Total product revenues	$	158,379	$	134,636	$	303,989	$	265,295

Revenues by Geographical Location

The following table summarizes the Company’s revenues disaggregated by geographic region, which is determined based on customer location, for the three and six months ended June 30, 2019 and 2018:

	Three months ended June 30,				Six months ended June 30,
	2019		2018		2019		2018
	(In thousands)
United States	$	195,811	$	163,645	$	375,831	$	321,847
Rest of world (1)	21,602		25,028		44,099		49,445
Total revenues	$	217,413	$	188,673	$	419,930	$	371,292

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No individual country represented more than 10% of the respective totals.

Contract Asset and Liabilities

The following table reflects the Company’s contract assets and contract liabilities:

	June 30, 2019		December 31, 2018
	(In thousands)
Short-term unbilled receivables - included in accounts receivable and unbilled receivables	$	10,667	$	9,191
Long-term unbilled receivables - included in other long-term assets	13,630		16,481
Total contract assets	$	24,297	$	25,672
Short-term deferred revenues, net	$	83,012	$	81,835
Long-term deferred revenues	9,658		10,582
Total contract liabilities	$	92,670	$	92,417