Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Cash flows from operating activities:
Net income	$ 45,108	$ 43,688	$ 53,933
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	24,014	18,876	14,225
Amortization	18,825	15,856	10,225
Impairment of trade name	8,000
Non-cash portion of restructuring costs and charges	2,442
Provision for allowance for doubtful accounts	996	1,553	1,984
Stock-based compensation, including special employee grant in 2018	5,458	3,923	3,383
Amortization and write-offs of deferred financing costs	1,206	1,674	7,790
Debt extinguishment costs		1,512	3,375
Deferred income taxes	(593)	4,410	(4,962)
Loss (gain) on sales of assets	(291)	143	(2,703)
Change in operating assets and liabilities (net of acquisition effects):
Accounts receivable	(13,775)	12,682	(17,681)
Inventories	(14,793)	815	88
Prepaid expenses and other current assets	(11,342)	(4,429)	4,214
Accounts payable and accrued liabilities	10,240	(19,487)	26,435
Net cash provided by operating activities	75,495	81,216	100,306
Cash flows from investing activities:
Purchases of property, plant and equipment	(24,800)	(31,268)	(29,769)
Business acquisitions	(90,368)		(354,584)
Proceeds from disposals of assets	766	71	5,957
Net cash used in investing activities	(114,402)	(31,197)	(378,396)
Cash flows from financing activities:
Proceeds from issuance of senior notes	53,188		315,000
Proceeds from issuance of common stock, net of issuance costs			152,503
Payments of long-term debt	(10,000)	(64,138)	(160,294)
Payments of financing costs	(1,266)	(854)	(12,066)
Proceeds from issuance of long-term debt		64,000
Purchases of treasury stock under repurchase program		(5,550)
Purchases of treasury stock relating to tax withholdings on employee equity awards	(815)	(505)	(687)
Proceeds from exercise of stock options	572	1,562	2,239
Proceeds from issuance of common stock under ESPP	305	59	30
Other			(14)
Net cash provided by (used in) financing activities	41,984	(5,426)	296,711
Net increase in cash and cash equivalents	3,077	44,593	18,621
Cash and cash equivalents at beginning of year	97,243	52,650	34,029
Cash and cash equivalents at end of year	$ 100,320	$ 97,243	$ 52,650