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REVENUE (Tables) | 9 Months Ended
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Sep. 30, 2021
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | The following table shows revenue by product and services groups (in thousands):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Licensing, support and maintenance | $ | 8,136 |  |  | $ | 5,211 |  |  | $ | 24,353 |  |  | $ | 14,005 |
Variable royalties | 739 |  |  | 832 |  |  | 1,913 |  |  | 2,679 |
Other | 84 |  |  | 386 |  |  | 164 |  |  | 682 |
Total | $ | 8,959 |  |  | $ | 6,429 |  |  | $ | 26,430 |  |  | $ | 17,366 |
Contract Balances on Condensed Consolidated Balance Sheet | The following table provides information about accounts receivable, net, contract assets and deferred revenue (in thousands):
| As of
| September 30, 2021 |  | December 31, 2020
Accounts receivable, net | $ | 8,123 |  |  | $ | 14,350 |
Contract assets | $ | 1,183 |  |  | $ | 1,359 |
Deferred revenue | $ | (38,248) |  |  | $ | (32,908) |
The following table is a rollforward of deferred revenue as of September 30, 2021 and December 31, 2020 (in thousands):
| As of September 30, 2021
Deferred revenue licensing, support and maintenance - balance as of December 31, 2020 | 32,908 |
Additions | 29,857 |
Revenue recognized | (24,517) |
Deferred revenue licensing, support and maintenance - balance as of September 30, 2021 | $ | 38,248 |
| As of December 31, 2020
Deferred revenue licensing, support and maintenance - beginning balance as of December 31, 2019 | $ | 23,116 |
Additions | 37,200 |
Revenue recognized | (27,408) |
Deferred revenue licensing, support and maintenance - ending balance as of December 31, 2020 | $ | 32,908 |
Capitalized Direct Commission Costs | Total capitalized direct commission costs were as follows (in thousands):
| As of
| September 30, 2021 |  | December 31, 2020
Short-term commissions capitalized in prepaid expenses and other current assets | $ | 1,660 |  |  | $ | 1,079 |
Long-term commissions capitalized in other assets | 1,325 |  |  | 1,479 |
Total | $ | 2,985 |  |  | $ | 2,558 |

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- Definition Tabular disclosure of cost capitalized in obtaining or fulfilling contract with customer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 40 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123353750&loc=SL49131252-203054 + Details
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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 + Details
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