CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Restricted cash included in the line item prepaid and other on the Condensed Consolidated Balance Sheets as shown below represents amounts held in escrow related to the CSP Technologies acquisition.
Cash and equivalents	$ 270,577	$ 261,823	$ 291,382
Restricted cash included in prepaid and other			5,000
Total Cash and Equivalents and Restricted Cash shown in the Statement of Cash Flows	$ 270,577	$ 266,823	$ 296,382	$ 712,640

Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant