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Property and Equipment | 12 Months Ended
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Mar. 31, 2023
Property, Plant and Equipment [Abstract] |
Property and Equipment | Property and Equipment Property and equipment consists of the following at March 31, 2023 and 2022 (in thousands):
| Estimated useful life |  | 2023 |  | 2022
Network sites and equipment | 5-10 years |  | $ | 12,292 |  |  | $ | 14,588 |
Computer software | 1-7 years |  | 847 |  |  | 639 |
Computer equipment | 5-7 years |  | 279 |  |  | 204 |
Furniture and fixture and other equipment | 2-5 years |  | 450 |  |  | 415 |
Leasehold improvements | Shorter of the lease term or 10 years |  | 819 |  |  | 242 |
|  |  | 14,687 |  |  | 16,088 |
Less accumulated depreciation |  |  | 11,628 |  |  | 13,379 |
|  |  | 3,059 |  |  | 2,709 |
Construction in process |  |  | 547 |  |  | 240 |
Property and equipment, net |  |  | $ | 3,606 |  |  | $ | 2,949 |
Depreciation expense for the years ended March 31, 2023, 2022 and 2021 amounted to approximately $1.4 million, $1.5 million and $3.5 million, respectively. During the year ended March 31, 2021, the Company recorded $85,000 of non-cash impairment charges for network sites and equipment to reduce the carrying values to zero. There were no impairment charges during the years ended March 31, 2023 and March 31, 2022.

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- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI https://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126982197&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126982197&loc=d3e99779-112916 + Details
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