Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2020

Revenue From Contract With Customer [Abstract]

Schedule of Revenue from Contract with Customer Excludes Leasing

Revenues from contracts with customers (excludes leasing) consisted of the following:

	Twelve Months Ended
	December 31, 2020
	Western Hemisphere		Eastern Hemisphere		Asia- Pacific		Total
	(In thousands)
Product Revenues	$	151,351	$	56,038	$	51,445	$	258,834
Service Revenues	$	45,536	$	14,332	$	15,709	$	75,577
Total	$	196,887	$	70,370	$	67,154	$	334,411

	Twelve Months Ended
	December 31, 2019
	Western Hemisphere		Eastern Hemisphere		Asia- Pacific		Total
	(In thousands)
Product Revenues	$	162,067	$	86,057	$	55,155	$	303,279
Service Revenues		42,694		18,509		10,815		72,018
Total	$	204,761	$	104,566	$	65,970	$	375,297

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, 2019	$	136,332
Additions		111,828
Transfers to Accounts Receivable		(112,187	)
Contract Assets at December 31, 2020	$	135,973

Contract Liabilities (amounts shown in thousands)

Contract Liabilities at December 31, 2019	$	6,901
Additions		16,393
Revenue Recognized		(12,479	)
Contract Liabilities at December 31, 2020	$	10,815