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Note 10 - Revenues | 6 Months Ended
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Jun. 30, 2022
Notes to Financial Statements |
Revenue from Contract with Customer [Text Block] |
10. | Revenues
The following tables represent a disaggregation of revenue from contracts with customers for the three and six months ended June 30, 2022 and 2021:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
(in thousands) |  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Instruments, equipment, software and accessories |  | $ | 27,765 |  |  | $ | 27,992 |  |  | $ | 55,303 |  |  | $ | 53,819 |
Service, maintenance and warranty contracts |  |  | 1,443 |  |  |  | 1,205 |  |  |  | 2,683 |  |  |  | 2,367 |
Total revenues |  | $ | 29,208 |  |  | $ | 29,197 |  |  | $ | 57,986 |  |  | $ | 56,186 |
The following tables represent a disaggregation of revenue by geographic destination for the three and six months ended June 30, 2022 and 2021:
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
(in thousands) |  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
United States |  | $ | 14,075 |  |  | $ | 13,151 |  |  | $ | 26,314 |  |  | $ | 24,328 |
Europe |  |  | 7,194 |  |  |  | 8,026 |  |  |  | 15,017 |  |  |  | 16,615 |
Asia |  |  | 5,618 |  |  |  | 5,695 |  |  |  | 12,351 |  |  |  | 11,233 |
Rest of the world |  |  | 2,321 |  |  |  | 2,325 |  |  |  | 4,304 |  |  |  | 4,010 |
Total revenues |  | $ | 29,208 |  |  | $ | 29,197 |  |  | $ | 57,986 |  |  | $ | 56,186 |
Deferred revenue The following tables provide details of deferred revenue as of the periods indicated:
|  | June 30, |  |  | December 31, |
(in thousands) |  | 2022 |  |  | 2021 |
Service contracts |  | $ | 1,653 |  |  | $ | 1,976 |
Customer advances |  |  | 1,959 |  |  |  | 2,290 |
Total deferred revenue |  | $ | 3,612 |  |  | $ | 4,266 |
During the three months ended June 30, 2022 and 2021, the Company recognized revenue of $0.6 million and $0.3 million from contract liabilities existing at December 31, 2021 and 2020, respectively. During the six months ended June 30, 2022 and 2021 the Company recognized revenue of $1.3 million and $1.5 million from contract liabilities existing at December 31, 2021 and 2020, respectively. Allowance for Doubtful Accounts Allowance for doubtful accounts is based on the Company’s assessment of the collectability of accounts receivable. Activity in the allowance for doubtful accounts is as follows:
|  | Six Months Ended June 30, |
(in thousands) |  | 2022 |  |  | 2021 |
Balance, beginning of period |  | $ | 136 |  |  | $ | 227 |
Bad debt (credit) expense |  |  | 107 |  |  |  | (17 | )
Charge-offs and other |  |  | (48 | ) |  |  | (65 | )
Balance, end of period |  | $ | 195 |  |  | $ | 145 |
Concentrations No customer accounted for more than 10% of revenues for the three and six months ended June 30, 2022 and 2021. At June 30, 2022 and December 21, 2021, no customer accounted for more than 10% of net accounts receivable.

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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI https://asc.fasb.org/topic&trid=49130388 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130551-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(2) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130556-203045 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130554-203045 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 9 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130550-203045 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130554-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130554-203045 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130554-203045 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 15 -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130558-203045 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130554-203045 + Details
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