Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 27, 2020	Sep. 29, 2019
Operating activities
Net income (loss)	$ 22,739	$ (33,397)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation of property and equipment	7,263	9,468
Amortization of intangible assets	24,141	25,029
Amortization of debt issuance cost	9,560	6,096
Stock-based compensation	8,018	0
Net undistributed income from unconsolidated ventures	(3,533)	(2,253)
Deferred income taxes, net	(11,229)	(1,872)
Other non-cash activities, net	382	35,598
Changes in operating assets and liabilities, net:
Accounts receivable, net	(3,477)	65,752
Accounts payable	15,852	1,310
Accrued expenses	765	12,217
Customer advances and billings in excess of costs	8,923	34,179
Salaries, benefits and payroll taxes	10,975	1,569
Inventories, net	2,291	(2,195)
Prepaid expenses and other current assets	(4,409)	1,050
Other current and noncurrent liabilities	71	(17,172)
Investments	2,793	3,314
Other noncurrent assets	5,903	(6,289)
Accrued taxes	(4,904)	(3,527)
Net cash provided by operating activities	92,124	128,877
Investing activities
Expenditures for property and equipment	(2,628)	(8,421)
Other investing activities, net	(72)	2,221
Net cash used in investing activities	(2,700)	(6,200)
Financing activities
Net contributions from noncontrolling interests	2,095	5,400
Borrowings on long-term debt	60,734	161,409
Repayments on long-term debt	(212,184)	(246,411)
Payments of debt issuance costs	(964)	0
Recapitalization from merger with Gores III	605,713	0
Payment of underwriting and transaction costs	(27,267)	0
Distribution to selling stockholders	(439,719)	0
Other financing activities, net	(292)	(742)
Net cash used in financing activities	(11,884)	(80,344)
Effect of exchange rate changes on cash and cash equivalents	(129)	(1,486)
Net increase in cash and cash equivalents	77,411	40,847
Cash and cash equivalents at beginning of period	68,035	51,097
Cash and cash equivalents at end of period	145,446	91,944
Supplemental cash flow information
Cash paid for interest	35,085	40,628
Cash paid for taxes	$ 5,304	$ 6,936