Consolidated Balance Sheets - USD ($) $ in Thousands	Jul. 02, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 177,485	$ 181,374
Current investments, amortized cost of $195,690 and $223,545 in 2023 and 2022, respectively, allowance for credit losses of $0 in 2023 and 2022	191,474	218,759
Accounts receivable, allowance for credit losses of $602 and $730 in 2023 and 2022, respectively	147,864	125,417
Unbilled revenue	2,243	2,179
Inventories	126,226	122,480
Prepaid expenses and other current assets	73,090	67,490
Total current assets	718,382	717,699
Non-current investments, amortized cost of $481,101 and $476,148 in 2023 and 2022, respectively, allowance for credit losses of $0 in 2023 and 2022	463,494	454,117
Property, plant, and equipment, net	81,638	79,714
Operating lease assets	68,594	37,682
Goodwill	241,582	242,630
Intangible assets, net	10,729	12,414
Deferred income taxes	407,257	407,241
Other assets	6,438	6,643
Total assets	1,998,114	1,958,140
Current liabilities:
Accounts payable	26,109	27,103
Accrued expenses	83,605	93,235
Accrued income taxes	19,121	18,129
Deferred revenue and customer deposits	43,439	40,787
Operating lease liabilities	8,188	8,454
Total current liabilities	180,462	187,708
Non-current operating lease liabilities	61,852	31,298
Deferred income taxes	237,357	249,961
Reserve for income taxes	19,239	15,866
Non-current accrued income taxes	18,338	33,008
Other liabilities	403	1,905
Total liabilities	517,651	519,746
Commitments and Contingencies
Shareholders’ equity:
Preferred stock, $.01 par value – Authorized: 400 shares in 2023 and 2022, respectively; no shares issued and outstanding	0	0
Common stock, $.002 par value – Authorized: 300,000 shares in 2023 and 2022, respectively; issued and outstanding: 172,293 and 172,631 shares in 2023 and 2022, respectively	345	345
Additional paid-in capital	1,010,973	979,167
Retained earnings	537,947	528,179
Accumulated other comprehensive loss, net of tax	(68,802)	(69,297)
Total shareholders’ equity	1,480,463	1,438,394
Total liabilities and shareholders' equity	$ 1,998,114	$ 1,958,140