Revenue Recognition (Adoption of ASC 606) (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Schedule of Revenue from Contract with Customer

Revenues from contracts with customers consisted of the following:

	Three months ended
	June 30, 2018
	Western Hemisphere		Eastern Hemisphere		Asia-Pacific		Intercompany		Total
	(In thousands)
Product Revenues	$	43,999	$	14,539	$	6,181	$	—	$	64,719
Service Revenues	9,917		5,148		2,931		—		17,996
Total	$	53,916	$	19,687	$	9,112	$	—	$	82,715

	Six months ended
	June 30, 2018
	Western Hemisphere		Eastern Hemisphere		Asia-Pacific		Intercompany		Total
	(In thousands)
Product Revenues	$	86,434	$	34,404	$	14,926	$	—	$	135,764
Service Revenues	19,000		11,122		5,336		—		35,458
Total	$	105,434	$	45,526	$	20,262	$	—	$	171,222

Schedule of Contract Asset and Liability

Balances related to contracts with customers consisted of the following:

Contract Assets (amounts shown in thousands)

Contract Assets at December 31, 2017	$	41,825
Additions	94,912
Transfers to Accounts Receivable	65,713
Contract Assets at June 30, 2018	$	71,024

Contract Liabilities (amounts shown in thousands)

Contract Liabilities at December 31, 2017	$	4,767
Additions	20,457
Revenue Recognized	20,502
Contract Liabilities at June 30, 2018	$	4,722