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Acquisition (Details) |  |  | 6 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jan. 22, 2018 USD ($) | Oct. 20, 2017 USD ($) | Mar. 31, 2018 USD ($) | Sep. 30, 2017 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Mar. 31, 2017 USD ($) | Sep. 30, 2016 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Goodwill |  |  | $ 155,982,000 | $ 131,995,000 |  |  | $ 129,921,000 | $ 109,448,000
Accelerated |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Total purchase price consideration | $ 19,059,000 |  |  |  |  |  |  |
Cash paid at closing | 16,759,000 |  |  |  |  |  |  |
Cash acquired | 300,000 |  |  |  |  |  |  |
Goodwill | $ 6,062,000 |  |  |  |  |  |  |
Weighted average use life of acquired intangibles | 5 years 6 months |  |  |  |  |  |  |
Revenues |  |  | 6,200,000 |  |  |  |  |
Net (loss) income |  |  | 1,400,000 |  |  |  |  |
Acquisition costs |  |  | 300,000 |  |  |  |  |
Earn-out payment installments | 2 |  |  |  |  |  |  |
TempAlert |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Purchase price before working capital adjustments |  | $ 45,000,000 |  |  |  |  |  |
Total purchase price consideration |  | 40,741,000 |  |  |  |  |  |
Cash paid at closing |  | 40,741,000 |  |  |  |  |  |
Cash acquired |  | 600,000 |  |  |  |  |  |
Goodwill |  | $ 17,552,000 |  |  |  |  |  |
Weighted average use life of acquired intangibles |  | 6 years 6 months |  |  |  |  |  |
Revenues |  |  | 5,700,000 |  |  |  |  |
Net (loss) income |  |  | (3,100,000) |  |  |  |  |
Acquisition costs |  |  | 1,400,000 | 400,000 |  |  |  |
Purchased and Core Technology | Accelerated |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Estimated useful life of finite lived intangibles | 5 years |  |  |  |  |  |  |
Purchased and Core Technology | TempAlert |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Estimated useful life of finite lived intangibles |  | 5 years |  |  |  |  |  |
Customer Relationships | Accelerated |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Estimated useful life of finite lived intangibles | 7 years |  |  |  |  |  |  |
Customer Relationships | TempAlert |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Estimated useful life of finite lived intangibles |  | 7 years |  |  |  |  |  |
Trademarks and Trade Names | Accelerated |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Estimated useful life of finite lived intangibles | 5 years |  |  |  |  |  |  |
Trademarks and Trade Names | TempAlert |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Estimated useful life of finite lived intangibles |  | 5 years |  |  |  |  |  |
Order backlog | Accelerated |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Estimated useful life of finite lived intangibles | 1 year |  |  |  |  |  |  |
Earn-out payments | Accelerated |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Earn-out payment maximum | $ 4,500,000 |  |  |  |  |  |  |
Additional earn-out payment | Accelerated |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Earn-out payment maximum | 2,000,000 |  |  |  |  |  |  |
Fair Value, Measurements, Recurring | Contingent Consideration | Estimate of Fair Value Measurement |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Contingent consideration fair value |  |  | 8,263,000 | $ 6,388,000 |  |  |  |
Fair Value, Measurements, Recurring | Contingent Consideration | Estimate of Fair Value Measurement | Accelerated |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Contingent consideration fair value | $ 2,300,000 |  | 2,300,000 |  |  |  |  |
Fair Value, Measurements, Recurring | Contingent Consideration | Estimate of Fair Value Measurement | TempAlert |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Contingent consideration fair value |  | $ 0 | $ 0 |  |  |  |  |
Forecast | Earn-out payments | TempAlert |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Earn-out payment maximum |  |  |  |  | $ 45,000,000 | $ 35,000,000 |  |

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
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