Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jul. 03, 2021	Jun. 27, 2020
Cash flows from operating activities:
Net income	$ 40,651	$ 18,796
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	11,759	13,456
Stock-based compensation expense	22,374	19,740
Amortization of right-of-use assets	3,291	2,976
Amortization of debt issuance costs and discount	184	208
Other non-cash adjustments	(92)	(60)
Changes in assets and liabilities:
Accounts receivable, net	(6,638)	(22,491)
Inventories, net	(985)	919
Prepaid expenses and other assets	(1,063)	(1,169)
Accounts payable	6,950	4,409
Accrued expenses	176	798
Accrued payroll obligations	(2,450)	1,869
Operating lease liabilities, current and long-term portions	(3,246)	(2,957)
Income taxes payable	(207)	370
Net cash provided by (used in) operating activities	70,704	36,864
Cash flows from investing activities:
Capital expenditures	(4,413)	(6,829)
Cash paid for software and intellectual property licenses	(6,377)	(4,626)
Net cash provided by (used in) investing activities	(10,790)	(11,455)
Cash flows from financing activities:
Restricted stock unit tax withholdings	(13,923)	(6,642)
Proceeds from issuance of common stock	3,948	4,537
Purchases of treasury stock	(40,113)	0
Proceeds from long-term debt	0	50,000
Repayment of long-term debt	(4,375)	(26,250)
Net cash provided by (used in) financing activities	(54,463)	21,645
Effect of exchange rate change on cash	(49)	40
Net increase in cash and cash equivalents	5,402	47,094
Beginning cash and cash equivalents	182,332	118,081
Ending cash and cash equivalents	187,734	165,175
Supplemental disclosure of cash flow information and non-cash investing and financing activities:
Interest paid	1,180	2,193
Operating lease payments	3,984	3,812
Income taxes paid, net of refunds	1,805	1,579
Accrued purchases of plant and equipment	253	1,067
Operating lease right-of-use assets obtained in exchange for lease obligations	$ 7,459	$ 1,635