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ORGANIZATION AND OPERATIONS OF THE COMPANY - Contract Balances - Adoption of New ASUs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2019	Dec. 28, 2018	Dec. 29, 2017	Dec. 30, 2017
Assets
Accounts receivable, net of allowance for doubtful accounts	$ 57,504	$ 61,346	$ 38,441
Contract assets	101,418	51,851	24,732
Liabilities
Deferred income taxes, net			2,463
Equity
Retained earnings	35,012	30,171	19,588
Cash flows from operating activities:
Accounts receivable, net of allowance for doubtful accounts	11,627	3,177	(7,412)
Contract assets	$ (34,598)	(11,539)	$ (5,744)
Total cash flows used in operating activities		(8,362)
Calculated Under Revenue Guidance In Effect Before Topic 606 | ASC 606
Assets
Accounts receivable, net of allowance for doubtful accounts		68,240		$ (8,560)
Contract assets		44,981		9,328
Liabilities
Deferred income taxes, net		112		(215)
Equity
Retained earnings		29,889		553
Cash flows from operating activities:
Accounts receivable, net of allowance for doubtful accounts		(3,717)
Contract assets		(4,645)
Total cash flows used in operating activities		(8,362)
Difference Between Revenue Guidance In Effect Before And After Topic 606 | ASC 606
Assets
Accounts receivable, net of allowance for doubtful accounts		(6,894)		29,881
Contract assets		6,870		34,060
Liabilities
Deferred income taxes, net		(112)		2,248
Equity
Retained earnings		282		$ 20,141
Cash flows from operating activities:
Accounts receivable, net of allowance for doubtful accounts		6,894
Contract assets		$ (6,894)

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