XML 160 R145.htm IDEA: XBRL DOCUMENT
v3.22.1

Property, Plant and Equipment (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Property, Plant and Equipment |  |
Schedule of Property, Plant and Equipment | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | March 31, |  | December 31,
(in thousands) | ​ | 2022 | ​ | 2021
Furniture and fixtures | ​ | $ | 173 | ​ | $ | 173
Office and computer equipment | ​ |  | 5,638 | ​ |  | 5,638
Software | ​ |  | 16,423 | ​ |  | 15,227
Test equipment | ​ |  | 347 | ​ |  | 347
Leasehold improvements | ​ |  | 2,689 | ​ |  | 2,689
​ | ​ |  | 25,270 | ​ |  | 24,074
Less: Accumulated depreciation | ​ |  | (21,209) | ​ |  | (20,632)
Add: Assets under development | ​ |  | 1,508 | ​ |  | 1,518
Net property, plant and equipment | ​ | $ | 5,569 | ​ | $ | 4,960
| ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2021 |  | 2020
Furniture and fixtures | ​ | $ | 173 | ​ | $ | 173
Office and computer equipment | ​ |  | 5,638 | ​ |  | 5,436
Software | ​ |  | 15,227 | ​ |  | 13,251
Test equipment | ​ |  | 347 | ​ |  | 347
Leasehold improvements | ​ |  | 2,689 | ​ |  | 2,689
​ | ​ |  | 24,074 | ​ |  | 21,896
Less: Accumulated depreciation | ​ |  | (20,632) | ​ |  | (18,614)
Add: Assets under development | ​ |  | 1,518 | ​ |  | 1,743
Net property, plant and equipment | ​ | $ | 4,960 | ​ | $ | 5,025

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
Name: | us-gaap_PropertyPlantAndEquipmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration