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Condensed Consolidated Balance Sheets - USD ($)
Sep. 27, 2025
Dec. 28, 2024
Current assets:    
Cash and cash equivalents $ 26,508,140 $ 14,160,120
Restricted cash 1,050,000 1,050,000
Marketable securities, at fair value 21,419,658
Accounts receivable, net of allowance of $1,009,000 and $1,075,000 in 2025 and 2024, respectively 6,357,343 11,850,654
Contract assets 9,948,216 7,074,020
Inventory 6,293,750 6,134,096
Prepaid expenses and other current assets 3,018,271 1,153,852
Total current assets 53,175,720 62,842,400
Property, plant and equipment, net 2,750,197 2,099,708
Operating lease right-of-use assets 2,015,472 2,134,898
Other assets 123,822 123,822
Equity investments 3,151,255 3,564,938
Total assets 61,216,466 70,765,766
Current liabilities:    
Accounts payable 6,125,584 5,941,470
Accrued payroll and expenses 2,247,619 2,409,468
Accrued warranty 2,069,000 2,557,000
Contract liabilities 1,365,819 87,752
Operating lease liabilities 775,814 639,642
Accrued post-retirement benefits 40,000 40,000
Other accrued liabilities 1,623,656 685,946
Customer deposits 9,542
Accrued legal expenses 1,850,000 6,367,900
Deferred tax liabilities 465,403 414,118
Accrued litigation liability 19,700,000 24,800,000
Total current liabilities 36,272,437 43,943,296
Noncurrent contract liabilities and asset retirement obligations 378,453 358,292
Operating lease liabilities, net of current portion 1,230,109 1,479,976
Accrued post-retirement benefits, net of current portion 190,646 230,646
Other long-term liabilities, net of current portion 1,822,341 1,471,994
Total liabilities 39,893,986 47,484,204
Commitments and contingencies (Notes 13 and 14)
Stockholders’ equity:    
Preferred stock, par value $.01 per share: authorized, 3,000 shares; no shares issued and outstanding as of 2025 and 2024
Common stock, par value $0.01; 275,000,000 shares authorized, 163,299,258 issued, and 156,686,278 outstanding at September 27, 2025; 200,000,000 shares authorized, 161,264,507 issued, and 156,118,014 outstanding at December 28, 2024 1,571,180 1,564,308
Additional paid-in capital 424,708,822 422,087,837
Treasury stock (431,862 shares in 2025 and 312,882 shares in 2024, at cost) (484,717) (370,012)
Accumulated other comprehensive income 1,759,687 2,032,359
Accumulated deficit (406,232,492) (402,032,930)
Total stockholders’ equity 21,322,480 23,281,562
Total liabilities and stockholders’ equity $ 61,216,466 $ 70,765,766