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Business Acquisition - Narrative (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Aug. 21, 2018 | Sep. 30, 2018 | Sep. 30, 2018 | Sep. 30, 2017
Business Acquisition [Line Items] |  |  |  |
Amortization of intangible assets |  |  | $ 10,341 | $ 6,238
Blue Microphones Holding Corporation |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Payments to acquire business, gross | $ 134,900 |  |  |
Inventory adjustment due to purchase accounting | $ 1,800 |  |  |
Business acquisition related costs |  | $ 1,500 |  |
Net sales contributed by acquiree |  | $ 7,700 |  |
Percent of net sales contributed by acquiree |  | 1.00% |  |
Developed technology | Blue Microphones Holding Corporation |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Amortization of intangible assets |  | $ 200 |  |
Customer relationships and trade name | Blue Microphones Holding Corporation |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Amortization of intangible assets |  | $ 300 |  |
Level 3 | Developed technology | Blue Microphones Holding Corporation |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Royalty rate for fair value measurement | 10.00% |  |  |
Level 3 | Trade name | Blue Microphones Holding Corporation |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Royalty rate for fair value measurement | 3.00% |  |  |
Discount rate for value measurement | 11.00% |  |  |
Discount Rate | Level 3 | Developed technology | Blue Microphones Holding Corporation |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Discount rate for value measurement | 11.00% |  |  |
Discount Rate | Level 3 | Customer relationships | Blue Microphones Holding Corporation |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Discount rate for value measurement | 11.00% |  |  |

X
- Definition Upon sales of the inventory, the difference between the fair value of the inventories and the amount recognized by the acquiree immediately before the acquisition date + References No definition available. + Details
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- Definition Business Combination, Pro Forma Information, Percent Of Revenue From Acquiree Since Acquisition Date + References No definition available. + Details
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- Definition Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed, Measurement Input + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460 + 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://fasb.org/us-gaap/role/ref/legacyRef -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 The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3213-108585 + Details
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