Revenue Recognition (Adoption of ASC 606) (Tables)

9 Months Ended

Sep. 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
	September 30, 2018
	Western Hemisphere		Eastern Hemisphere		Asia-Pacific		Intercompany		Total
	(In thousands)
Product Revenues	$	43,825	$	17,834	$	1,587	$	—	$	63,246
Service Revenues	10,169		4,364		3,008		—		17,541
Total	$	53,994	$	22,198	$	4,595	$	—	$	80,787

	Nine months ended
	September 30, 2018
	Western Hemisphere		Eastern Hemisphere		Asia-Pacific		Intercompany		Total
	(In thousands)
Product Revenues	$	130,259	$	52,238	$	16,513	$	—	$	199,010
Service Revenues	29,173		15,485		8,345		—		53,003
Total	$	159,432	$	67,723	$	24,858	$	—	$	252,013

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	44,110
Transfers to Accounts Receivable	10,180
Contract Assets at September 30, 2018	$	75,755

Contract Liabilities (amounts shown in thousands)

Contract Liabilities at December 31, 2017	$	4,767
Additions	25,039
Revenue Recognized	23,018
Contract Liabilities at September 30, 2018	$	6,788