Consolidated Condensed Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 28, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net income	$ 138,575	$ 16,042
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, plant and equipment	97,172	124,556
Amortization of definite-lived intangible assets	34,209	41,807
Amortization of debt discount and issuance costs	14,488	10,764
Deferred income taxes	8,039	(2,453)
Stock-based compensation	11,961	12,190
Impairment of goodwill	69,200
Gain on sale of the Mobility business unit	(237,253)
Other	(242)	(2,592)
Changes in operating assets and liabilities:
Accounts receivable, net	128,681	(6,777)
Contract assets	(33,500)	19,199
Inventories	(10,557)	(16,947)
Prepaid expenses and other current assets	(15,008)	(6,049)
Accounts payable	15,902	21,435
Contract liabilities	(839)	(473)
Accrued salaries, wages and benefits	(11,804)	(12,374)
Other current liabilities	22,661	(16,539)
Net cash provided by operating activities	231,685	181,789
Cash flows from investing activities:
Proceeds from sale of the Mobility business unit, net of cash disposed	507,466
Purchase of property, plant and equipment and other assets	(84,042)	(95,372)
Proceeds from sale of property, plant and equipment and other assets	154	6,382
Other	(623)
Net cash provided by (used in) investing activities	422,955	(88,990)
Cash flows from financing activities:
Repayment of long-term debt borrowing	(400,000)	(30,000)
Proceeds from exercise of stock options	191
Payment of debt issuance costs		(1,639)
Redemption of convertible notes		(10)
Other	7,321
Net cash used in financing activities	(392,488)	(31,649)
Effect of foreign currency exchange rates on cash, cash equivalents, and restricted cash	979	(921)
Net increase in cash, cash equivalents, and restricted cash	263,131	60,229
Cash, cash equivalents, and restricted cash at beginning of period	400,154	256,360
Cash, cash equivalents, and restricted cash at end of period	663,285	316,589
Cash, cash equivalents, and restricted cash in assets held for sale		(20,230)
Cash, cash equivalents, and restricted cash as presented on the consolidated condensed balance sheet	663,285	296,359
Supplemental cash flow information:
Cash paid, net for interest	40,540	58,319
Cash paid, net for income taxes	15,856	12,367
Net cash provided by operating activities from discontinued operations	39,462	12,218
Net cash provided by (used in) investing activities from discontinued operations	497,916	(20,356)
Supplemental disclosure of noncash investing activities:
Property, plant and equipment recorded in accounts payable	$ 26,914	66,681
Supplemental disclosure of noncash investing activities from discontinued operations:
Property, plant and equipment recorded in accounts payable		$ 10,495