Note 1 - Summary of Significant Accounting Policies (Tables)
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9 Months Ended |
Sep. 25, 2021 |
Notes Tables |
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Schedule of Inventory, Current [Table Text Block] |
| | September 25, | | | December 26, | |
| | 2021 | | | 2020 | |
Raw materials and purchased parts | | $ | 91,935 | | | $ | 83,755 | |
Work in process | | | 44,952 | | | | 44,315 | |
Finished goods | | | 20,625 | | | | 14,430 | |
Total inventories | | $ | 157,512 | | | $ | 142,500 | |
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Property, Plant and Equipment [Table Text Block] |
| | September 25, | | | December 26, | |
| | 2021 | | | 2020 | |
Land and land improvements | | $ | 7,875 | | | $ | 8,141 | |
Buildings and building improvements | | | 26,749 | | | | 41,153 | |
Machinery and equipment | | | 78,816 | | | | 65,342 | |
| | | 113,440 | | | | 114,636 | |
Less accumulated depreciation and amortization | | | (48,282 | ) | | | (47,720 | ) |
Property, plant and equipment, net | | $ | 65,158 | | | $ | 66,916 | |
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Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
| | Three Months Ended | | | Nine Months Ended | |
| | September 25, | | | September 26, | | | September 25, | | | September 26, | |
| | 2021 | | | 2020 | | | 2021 | | | 2020 | |
Cost of sales | | $ | 239 | | | $ | 218 | | | $ | 692 | | | $ | 641 | |
Research and development | | | 889 | | | | 782 | | | | 2,433 | | | | 2,443 | |
Selling, general and administrative | | | 2,586 | | | | 2,299 | | | | 7,618 | | | | 7,229 | |
Total share-based compensation | | | 3,714 | | | | 3,299 | | | | 10,743 | | | | 10,313 | |
Income tax benefit | | | (155 | ) | | | (215 | ) | | | (569 | ) | | | (610 | ) |
Total share-based compensation, net | | $ | 3,559 | | | $ | 3,084 | | | $ | 10,174 | | | $ | 9,703 | |
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Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
| | Three Months Ended | | | Nine Months Ended | |
| | September 25, | | | September 26, | | | September 25, | | | September 26, | |
| | 2021 | | | 2020 | | | 2021 | | | 2020 | |
Weighted average common shares | | | 48,666 | | | | 41,947 | | | | 46,992 | | | | 41,764 | |
Effect of dilutive securities | | | 791 | | | | - | | | | 1,145 | | | | - | |
| | | 49,457 | | | | 41,947 | | | | 48,137 | | | | 41,764 | |
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Disaggregation of Revenue [Table Text Block] |
| | Three Months Ended | | | Nine Months Ended | |
Disaggregated Net Sales | | September 25, 2021 | | | September 26, 2020 | | | September 25, 2021 | | | September 26, 2020 | |
Systems: | | | | | | | | | | | | | | | | |
Semiconductor Test & Inspection | | $ | 146,010 | | | $ | 70,360 | | | $ | 433,830 | | | $ | 214,910 | |
PCB Test | | | - | | | | 8,990 | | | | 17,831 | | | | 23,939 | |
Non-systems: | | | | | | | | | | | | | | | | |
Semiconductor Test & Inspection | | | 79,053 | | | | 66,865 | | | | 234,764 | | | | 181,756 | |
PCB Test | | | - | | | | 4,432 | | | | 8,929 | | | | 13,047 | |
Total net sales | | $ | 225,063 | | | $ | 150,647 | | | $ | 695,354 | | | $ | 433,652 | |
| | Three Months Ended | | | Nine Months Ended | |
Disaggregated Net Sales | | September 25, 2021 | | | September 26, 2020 | | | September 25, 2021 | | | September 26, 2020 | |
China | | $ | 60,205 | | | $ | 30,423 | | | $ | 171,653 | | | $ | 92,367 | |
Philippines | | | 49,382 | | | | 11,860 | | | | 119,669 | | | | 35,170 | |
Taiwan | | | 15,006 | | | | 22,689 | | | | 74,392 | | | | 59,060 | |
Malaysia | | | 21,086 | | | | 11,435 | | | | 63,481 | | | | 38,451 | |
United States | | | 15,498 | | | | 32,111 | | | | 57,435 | | | | 71,739 | |
Rest of the World | | | 63,886 | | | | 42,129 | | | | 208,724 | | | | 136,865 | |
Total net sales | | $ | 225,063 | | | $ | 150,647 | | | $ | 695,354 | | | $ | 433,652 | |
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Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
| | Three Months Ended | | | Nine Months Ended | |
| | September 25, | | | September 26, | | | September 25, | | | September 26, | |
| | 2021 | | | 2020 | | | 2021 | | | 2020 | |
Semiconductor Test & Inspection | | | | | | | | | | | | | | | | |
Customers individually accounting for more than 10% of net sales | | | two | | | | * | | | one | | | | one | |
Percentage of net sales | | | 32 | % | | | * | | | | 14 | % | | | 11 | % |
PCB Test | | | | | | | | | | | | | | | | |
Customers individually accounting for more than 10% of net sales | | | N/A | | | | * | | | | * | | | | * | |
Percentage of net sales | | | N/A | | | | * | | | | * | | | | * | |
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