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Note 18 - Revenues (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Year Ended December 31, 2019
|  | (in thousands)
|  | United States |  | United Kingdom |  | Germany |  | Rest of the world |  | Total
Instruments, equipment, software and accessories |  | $ | 78,196 |  |  | $ | 10,607 |  |  | $ | 13,359 |  |  | $ | 8,058 |  |  | $ | 110,220 |
Service, maintenance and warranty contracts |  |  | 4,742 |  |  |  | 819 |  |  |  | 313 |  |  |  | 82 |  |  |  | 5,956 |
Total revenues |  | $ | 82,938 |  |  | $ | 11,426 |  |  | $ | 13,672 |  |  | $ | 8,140 |  |  | $ | 116,176 |
|  | Year Ended December 31, 2018
|  | (in thousands)
|  | United States |  | United Kingdom |  | Germany |  | Rest of the world |  | Total
Instruments, equipment, software and accessories |  | $ | 79,614 |  |  | $ | 13,690 |  |  | $ | 13,193 |  |  | $ | 8,571 |  |  | $ | 115,068 |
Service, maintenance and warranty contracts |  |  | 4,438 |  |  |  | 832 |  |  |  | 366 |  |  |  | 70 |  |  |  | 5,706 |
Total revenues |  | $ | 84,052 |  |  | $ | 14,522 |  |  | $ | 13,559 |  |  | $ | 8,641 |  |  | $ | 120,774 |
Contract with Customer, Asset and Liability [Table Text Block] |
|  | Year Ended December 31, 2019
|  | (in thousands)
|  | Service Contracts |  | Customer Advances |  | Total
Balance, beginning of period |  | $ | 1,659 |  |  | $ | 2,161 |  |  | $ | 3,820 |
Deferral of revenue |  |  | 2,152 |  |  |  | 1,095 |  |  |  | 3,247 |
Recognition of deferred revenue |  |  | (2,233 | ) |  |  | (894 | ) |  |  | (3,127 | )
Effect of foreign currency translation |  |  | 9 |  |  |  | - |  |  |  | 9 |
Balance, end of period |  | $ | 1,587 |  |  | $ | 2,362 |  |  | $ | 3,949 |
|  | Year Ended December 31, 2018
|  | (in thousands)
|  | Service Contracts |  | Customer Advances |  | Total
Balance, beginning of period |  | $ | 505 |  |  | $ | - |  |  | $ | 505 |
Addition due to business combination |  |  | 848 |  |  |  | 2,128 |  |  |  | 2,976 |
Deferral of revenue |  |  | 4,305 |  |  |  | 1,210 |  |  |  | 5,515 |
Recognition of deferred revenue |  |  | (3,984 | ) |  |  | (1,177 | ) |  |  | (5,161 | )
Effect of foreign currency translation |  |  | (15 | ) |  |  | - |  |  |  | (15 | )
Balance, end of period |  | $ | 1,659 |  |  | $ | 2,161 |  |  | $ | 3,820 |
Financing Receivable, Allowance for Credit Loss [Table Text Block] |
|  | Year Ended December 31,
|  | 2019 |  | 2018
|  | (in thousands)
Balance, beginning of period |  | $ | 332 |  |  | $ | 193 |
Addition due to business combination |  |  | - |  |  |  | 103 |
Bad debt expense |  |  | 288 |  |  |  | 25 |
Charge-offs and other recoveries |  |  | (293 | ) |  |  | 12 |
Effect of foreign currency translation |  |  | (2 | ) |  |  | (1 | )
Balance, end of period |  | $ | 325 |  |  | $ | 332 |

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