CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Apr. 01, 2022	Apr. 02, 2021
Cash flows from operating activities:
Net income	$ 9,602	$ 4,992
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation of property, plant, and equipment	994	865
Amortization of intangibles	8	9
Change in net pension liability	41	127
Loss on disposal of property and equipment		2
Stock-based compensation expense	3,894	3,330
Provision for sales returns and bad debts	(194)	103
Inventory provision	434	384
Changes in working capital:
Accounts receivable	(3,927)	1,138
Inventories	(1,483)	984
Prepayments, deposits, and other current assets	(4,505)	(143)
Accounts payable	2,668	(399)
Other current liabilities	(12,142)	(4,626)
Net cash provided by (used in) operating activities	(4,610)	6,766
Cash flows from investing activities:
Acquisition of property and equipment	(2,539)	(2,159)
Net cash used in investing activities	(2,539)	(2,159)
Cash flows from financing activities:
Repayment of finance lease obligations	(18)	(235)
Proceeds from the exercise of stock options	912	6,234
Proceeds from vested restricted stock		1
Net cash provided by financing activities	894	6,000
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(384)	(716)
Increase (decrease) in cash, cash equivalents and restricted cash	(6,639)	9,891
Cash and cash equivalents, at beginning of the period	199,706	152,453
Cash and cash equivalents, at end of the period	$ 193,067	$ 162,344