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Balance Sheet Information (Tables)
 3 Months Ended
Apr. 03, 2022
Balance Sheet Information [Abstract]  
Schedule of Accounts Receivable, Net Certain significant amounts included in our condensed consolidated balance sheets consist of the following:
April 3, 2022January 2, 2022
Accounts receivable, net:
Trade accounts receivable$21,491 $23,022 
Unbilled revenue (contract assets)26,207 16,303 
Other receivables— 56 
Total accounts receivable, net$47,698 $39,381 
Schedule of Inventories
April 3, 2022January 2, 2022
Inventories:
Raw materials$3,865 $3,340 
Work-in-process1,390 7,339 
Supplies and spare parts7,858 6,821 
Total inventories—current13,113 17,500 
Supplies and spare parts classified as other assets2,252 2,388 
Total inventories$15,365 $19,888 
Schedule of Prepaid Expenses and Other Current Assets
April 3, 2022January 2, 2022
Prepaid expenses and other current assets:
Prepaid expenses$3,116 $1,759 
Deferred contract costs2,785 1,579 
Prepaid inventory516 516 
Total prepaid assets and other current assets$6,417 $3,854 
Schedule of Property and Equipment, Net
April 3, 2022January 2, 2022
Property and equipment, net:
Land$5,396 $5,396 
Buildings and improvements87,396 87,156 
Machinery and equipment173,924 143,105 
Fixed assets not yet in service11,059 29,229 
Total property and equipment, at cost277,775 264,886 
Less: Accumulated depreciation(90,411)(84,411)
Total property and equipment, net$187,364 $180,475 
Schedule of Intangible Assets Intangible assets are summarized as follows:
April 3, 2022January 2, 2022
Intangible assets, net:
Software and licensed technology$8,653 $6,625 
Customer list— 1,500 
Total intangible assets, at cost8,653 8,125 
Less: Accumulated amortization(3,159)(4,234)
Total intangible assets, net$5,494 $3,891 
Schedule of Remaining Estimated Aggregate Annual Amortization Expense
Remaining estimated aggregate annual amortization expense is as follows for the years ending:
Amortization
Expense
Remainder of 2022$1,403 
20231,429 
2024754 
2025601 
2026433 
Thereafter874 
Total$5,494 
Schedule of Other Assets
April 3, 2022January 2, 2022
Other assets:
Supplies and spare parts$2,252 $2,388 
Deferred contract costs862 1,760 
Other assets1,297 687 
Total other assets$4,411 $4,835 
Schedule of Accrued Expenses
April 3, 2022January 2, 2022
Accrued expenses:
Accrued compensation$5,596 $4,557 
Patents and licensed technology obligations2,000 — 
Accrued commissions241 189 
Accrued fixed asset expenditures1,252 861 
Accrued royalties2,586 1,854 
Capital lease obligations1,597 1,192 
Other accrued expenses10,810 8,830 
Total accrued expenses$24,082 $17,483