Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 29, 2020	Mar. 31, 2019	Dec. 31, 2019
Operating activities
Net loss	$ (4,777)	$ (5,160)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation of property and equipment	2,583	3,010
Amortization of intangible assets	8,047	8,657	$ 8,700
Amortization of debt issuance cost	6,063	2,050
Net undistributed income from unconsolidated ventures	(663)	(1,300)
Deferred income taxes, net	(9,081)	440
Other non-cash activities, net	270	419
Changes in operating assets and liabilities, net:
Accounts receivable, net	20,869	(21,368)
Accounts payable	(2,417)	53,784
Accrued expenses	(3,779)	(7,412)
Customer advances and billings in excess of costs	18,223	23,390
Salaries, benefits and payroll taxes	(21,307)	(6,701)
Inventories, net	1,342	(2,001)
Prepaid expenses and other current assets	(2,921)	(5,754)
Other current and noncurrent liabilities	(4,545)	(2,307)
Investments	750	836
Other noncurrent assets	4,729	780
Accrued taxes	(2,473)	(2,000)
Net cash provided by operating activities	10,913	39,363
Investing activities
Expenditures for property and equipment	(404)	(3,614)
Net cash used in investing activities	(404)	(3,614)
Financing activities
Net contributions from noncontrolling interests	150	1,350
Borrowings on long-term debt	60,000	17,888
Repayments on long-term debt	(196,544)	(62,938)
Payments of debt issuance costs	(964)	0
Recapitalization from merger with Gores III	605,708	0
Payment of underwriting and transaction costs	(27,268)	0
Distribution to selling stockholders	(419,548)	0
Net cash provided by (used in) financing activities	21,534	(43,700)
Effect of exchange rate changes on cash and cash equivalents	(288)	(458)
Net increase (decrease) in cash and cash equivalents	31,755	(8,409)
Cash and cash equivalents at beginning of period	68,035	51,097	51,097
Cash and cash equivalents at end of period	99,790	42,688	$ 68,035
Supplemental cash flow information
Cash paid for interest	10,900	19,411
Cash paid for taxes	$ 1,523	$ 2,608