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Restatement of Previously Reported Unaudited Interim Consolidated Financial Statements (Unaudited) - Schedule of Cashflows (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2022 | Jun. 30, 2022 | Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | $ (311) | $ (215) | $ 435 | $ 3,123 | $ 1,807 | $ 2,985 | $ 1,019 | $ 2,167 | $ 3,559 | $ 3,344 | $ 3,032 | $ 7,978 | $ 7,814
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  |  |  |  |  | 6,429 | 10,117 | 13,346 | 11,532 | 9,551
Amortization of intangible assets |  |  |  |  |  |  |  |  | 4,525 | 9,176 | 13,547 | 7,505 | 6,439
Depreciation and amortization |  |  |  |  |  |  |  |  | 555 | 1,064 | 1,401 | 1,439 | 1,504
Amortization of investment premiums & other |  |  |  |  |  |  |  |  | 1,109 | 1,348 | 1,684 | 1,266 | 63
Accretion and amortization on debt securities |  |  |  |  |  |  |  |  | 3,453 | 5,239 | 7,053 | 4,372 | 0
Net changes in estimated fair value of acquisition-related contingent consideration |  |  |  |  |  |  |  |  | (1,370) | (1,278) | (1,358) | 1,080 | 136
Deferred taxes |  |  |  |  |  |  |  |  | (763) | (1,705) | (3,893) | 105 | 1,903
Changes in assets and liabilities, net of acquisitions: |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable |  |  |  |  |  |  |  |  | (6,095) | (12,233) | (10,813) | (813) | (361)
Contract assets |  |  |  |  |  |  |  |  | 345 | (1,737) | (2,330) | 1,150 | (6,695)
Other assets |  |  |  |  |  |  |  |  | 450 | (848) | 363 | (1,331) | 173
Accounts payable |  |  |  |  |  |  |  |  | 3,769 | 1,147 | 2,183 | (1,589) | 277
Accrued payroll and related taxes |  |  |  |  |  |  |  |  | (4,693) | (2,643) | (2,195) | 2,687 | 2,343
Deferred revenue |  |  |  |  |  |  |  |  | (2,215) | 1,917 | 1,850 | 1,790 | 3,141
Restructuring accrual |  |  |  |  |  |  |  |  |  | 1,900 | 991 | 0 | (1,562)
Other liabilities |  |  |  |  |  |  |  |  | 628 | 1,205 | 1,490 | 170 | (604)
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 9,686 | 16,013 | 26,351 | 37,341 | 24,122
Investing activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Purchases of investments |  |  |  |  |  |  |  |  | (47,818) | (47,818) | (47,818) | (246,508) | (44,725)
Sales and maturities of investments |  |  |  |  |  |  |  |  | 173,316 | 173,198 | 173,316 | 89,956 | 20,822
Acquisitions, net of cash acquired |  |  |  |  |  |  |  |  | (126,607) | (126,607) | (127,902) | (12,549) | 0
Purchases of property and equipment |  |  |  |  |  |  |  |  | (634) | (929) | (1,126) | (1,387) | (803)
Net cash used in investing activities |  |  |  |  |  |  |  |  | (1,743) | (2,156) | (3,530) | (170,488) | (24,706)
Financing activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issuance of equity plan common stock |  |  |  |  |  |  |  |  | 1,128 | 1,162 | 1,725 | 4,035 | 4,809
Repurchases and retirements of common stock |  |  |  |  |  |  |  |  | (14,828) | (14,828) | (15,176) | (190) | (1,002)
Payment of acquisition-related contingent consideration |  |  |  |  |  |  |  |  |  | (6,770) | (7,656) | (782) | (478)
Loans made to non-executive employees |  |  |  |  |  |  |  |  |  | (1,041) |  |  |
Principal payments on other borrowings |  |  |  |  |  |  |  |  | (36) | (36) | (36) | (88) | (143)
Net cash provided by (used in) financing activities |  |  |  |  |  |  |  |  | (13,736) | (21,513) | (21,143) | 143,680 | 3,403
Foreign currency effect on cash and cash equivalents |  |  |  |  |  |  |  |  | (535) | (1,113) | 69 | (207) | 419
Net increase in cash and cash equivalents |  |  |  |  |  |  |  |  | (6,328) | (8,769) | 1,747 | 10,326 | 3,238
Cash and cash equivalents at beginning of period | 21,543 | 23,984 |  | 30,312 |  |  |  | $ 19,986 | 30,312 | 30,312 | 30,312 | 19,986 | 16,748
Cash and cash equivalents at end of period | 32,059 | 21,543 | 23,984 |  | 30,312 |  |  |  | 23,984 | 21,543 | 32,059 | 30,312 | 19,986
Supplemental disclosures of cash flow information: |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock for acquisition-related contingent consideration |  |  |  |  |  |  |  |  |  | 2,722 |  |  |
Cash paid for interest |  |  |  |  |  |  |  |  | 582 | 597 | 1,164 | 569 | 0
Cash paid for income taxes |  |  |  |  |  |  |  |  | 597 | 819 | 750 | 741 | (451)
Supplemental disclosures of non-cash investing and financing activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of convertible senior notes hedge and embedded conversion derivative to additional paid-in capital |  |  |  |  |  |  |  |  | 42,821 | 42,821 | 28,516 | 0 | 0
Unrealized gain (loss) on investments |  | 909 | (828) |  |  |  |  |  | (1,098) | (189) | 283 | (165) | $ 103
As Previously Reported |  |  |  |  |  |  |  |  |  |  |  |  |
Operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | 811 | 1,013 |  |  |  |  |  | 4,137 | 4,948 |  |  |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  |  |  |  |  | 6,429 | 10,117 |  |  |
Amortization of intangible assets |  |  |  |  |  |  |  |  | 4,525 | 9,176 |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 555 | 1,064 |  |  |
Amortization of investment premiums & other |  |  |  |  |  |  |  |  | 1,109 | 1,348 |  |  |
Accretion and amortization on debt securities |  |  |  |  |  |  |  |  | 3,453 | 5,239 |  |  |
Net changes in estimated fair value of acquisition-related contingent consideration |  |  |  |  |  |  |  |  | (780) | (2,198) |  |  |
Deferred taxes |  |  |  |  |  |  |  |  | (523) | (1,141) |  |  |
Changes in assets and liabilities, net of acquisitions: |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable |  |  |  |  |  |  |  |  | (6,171) | (12,298) |  |  |
Contract assets |  |  |  |  |  |  |  |  | 345 | (1,737) |  |  |
Other assets |  |  |  |  |  |  |  |  | 498 | (1,090) |  |  |
Accounts payable |  |  |  |  |  |  |  |  | 3,769 | 1,147 |  |  |
Accrued payroll and related taxes |  |  |  |  |  |  |  |  | (4,693) | (2,643) |  |  |
Deferred revenue |  |  |  |  |  |  |  |  | (3,126) | 1,077 |  |  |
Restructuring accrual |  |  |  |  |  |  |  |  |  | 1,900 |  |  |
Other liabilities |  |  |  |  |  |  |  |  | 159 | 1,104 |  |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 9,686 | 16,013 |  |  |
Investing activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Purchases of investments |  |  |  |  |  |  |  |  | (47,818) | (47,818) |  |  |
Sales and maturities of investments |  |  |  |  |  |  |  |  | 173,316 | 173,198 |  |  |
Acquisitions, net of cash acquired |  |  |  |  |  |  |  |  | (126,607) | (126,607) |  |  |
Purchases of property and equipment |  |  |  |  |  |  |  |  | (634) | (929) |  |  |
Net cash used in investing activities |  |  |  |  |  |  |  |  | (1,743) | (2,156) |  |  |
Financing activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issuance of equity plan common stock |  |  |  |  |  |  |  |  | 1,128 | 1,162 |  |  |
Repurchases and retirements of common stock |  |  |  |  |  |  |  |  | (14,828) | (14,828) |  |  |
Payment of acquisition-related contingent consideration |  |  |  |  |  |  |  |  |  | (6,770) |  |  |
Loans made to non-executive employees |  |  |  |  |  |  |  |  |  | (1,041) |  |  |
Principal payments on other borrowings |  |  |  |  |  |  |  |  | (36) | (36) |  |  |
Net cash provided by (used in) financing activities |  |  |  |  |  |  |  |  | (13,736) | (21,513) |  |  |
Foreign currency effect on cash and cash equivalents |  |  |  |  |  |  |  |  | (535) | (1,113) |  |  |
Net increase in cash and cash equivalents |  |  |  |  |  |  |  |  | (6,328) | (8,769) |  |  |
Cash and cash equivalents at beginning of period | 21,543 | 23,984 |  | 30,312 |  |  |  |  | 30,312 | 30,312 | 30,312 |  |
Cash and cash equivalents at end of period |  | 21,543 | 23,984 |  | 30,312 |  |  |  | 23,984 | 21,543 |  | 30,312 |
Supplemental disclosures of cash flow information: |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock for acquisition-related contingent consideration |  |  |  |  |  |  |  |  |  | 2,722 |  |  |
Cash paid for interest |  |  |  |  |  |  |  |  | 582 | 597 |  |  |
Cash paid for income taxes |  |  |  |  |  |  |  |  | 597 | 819 |  |  |
Supplemental disclosures of non-cash investing and financing activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of convertible senior notes hedge and embedded conversion derivative to additional paid-in capital |  |  |  |  |  |  |  |  | 42,821 | 42,821 |  |  |
Unrealized gain (loss) on investments |  | 909 | (828) |  |  |  |  |  | (1,098) | (189) |  |  |
Total Adjustments |  |  |  |  |  |  |  |  |  |  |  |  |
Operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | (1,026) | (578) |  |  |  |  |  | (578) | (1,604) |  |  |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based compensation expense |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Amortization of intangible assets |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Amortization of investment premiums & other |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Accretion and amortization on debt securities |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Net changes in estimated fair value of acquisition-related contingent consideration |  |  |  |  |  |  |  |  | (590) | 920 |  |  |
Deferred taxes |  |  |  |  |  |  |  |  | (240) | (564) |  |  |
Changes in assets and liabilities, net of acquisitions: |  |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable |  |  |  |  |  |  |  |  | 76 | 65 |  |  |
Contract assets |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Other assets |  |  |  |  |  |  |  |  | (48) | 242 |  |  |
Accounts payable |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Accrued payroll and related taxes |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Deferred revenue |  |  |  |  |  |  |  |  | 911 | 840 |  |  |
Restructuring accrual |  |  |  |  |  |  |  |  |  | 0 |  |  |
Other liabilities |  |  |  |  |  |  |  |  | 469 | 101 |  |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Investing activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Purchases of investments |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Sales and maturities of investments |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Acquisitions, net of cash acquired |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Purchases of property and equipment |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Net cash used in investing activities |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Financing activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from the issuance of equity plan common stock |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Repurchases and retirements of common stock |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Payment of acquisition-related contingent consideration |  |  |  |  |  |  |  |  |  | 0 |  |  |
Loans made to non-executive employees |  |  |  |  |  |  |  |  |  | 0 |  |  |
Principal payments on other borrowings |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Net cash provided by (used in) financing activities |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Foreign currency effect on cash and cash equivalents |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Net increase in cash and cash equivalents |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Cash and cash equivalents at beginning of period | $ 0 | 0 |  | $ 0 |  |  |  |  | 0 | 0 | $ 0 |  |
Cash and cash equivalents at end of period |  | 0 | 0 |  | $ 0 |  |  |  | 0 | 0 |  | $ 0 |
Supplemental disclosures of cash flow information: |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock for acquisition-related contingent consideration |  |  |  |  |  |  |  |  |  | 0 |  |  |
Cash paid for interest |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Cash paid for income taxes |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Supplemental disclosures of non-cash investing and financing activities: |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of convertible senior notes hedge and embedded conversion derivative to additional paid-in capital |  |  |  |  |  |  |  |  | 0 | 0 |  |  |
Unrealized gain (loss) on investments |  | $ 0 | $ 0 |  |  |  |  |  | $ 0 | $ 0 |  |  |

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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585 + Details
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- Definition Amount of cash inflow from issuance of shares under share-based payment arrangement. Includes, but is not limited to, option exercised. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2A -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=128089324&loc=SL79508275-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
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- Definition Amount of cash outflow for the payment of debt classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
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- Definition The fair value of stock issued in noncash financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4304-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4332-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126999549&loc=d3e4313-108586 + Details
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