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Extended Product Warranties, Minimum Length

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Number of Veriable Interes Entities

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Number of major customers.

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[Line Items] for Schedule of Accounting Policies [Table]

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- Definition

Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 35
-Section 50
-Paragraph 1
-Subparagraph (b)
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A savings certificate entitling the Entity (that is, bearer) to receive interest at an established maturity date, based upon a fixed interest rate. A certificate of deposit may be issued in any denomination. Certificates of deposit are generally issued by commercial banks and, therefore, insured by the FDIC (up to the prescribed limit). Certificates of deposit generally restrict holders from withdrawing funds on demand without the incurrence of penalties. Generally, only certificates of deposit with original maturities of three months or less qualify as cash equivalents. Original maturity means original maturity to the entity holding the investment. As a related example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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- Definition

Amount of investment in debt security measured at amortized cost (held-to-maturity).

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Primarily represents commissions incurred in the period based upon the sale by commissioned employees or third parties of the entity's goods or services, and fees for sales assistance or product enhancements performed by third parties (such as a distributor or value added reseller).

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Percentage of vesting of award under share-based payment arrangement.

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Summary of Significant Accounting Policies - Narrative (Details)	3 Months Ended							12 Months Ended
	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) numberOfEntities customer	Dec. 31, 2018 USD ($) customer	Dec. 31, 2017 USD ($) customer
Schedule of Accounting Policies [Line Items]
Number of Veriable Interes Entities \| numberOfEntities								2
Certificates of deposit				$ 0				$ 0	$ 0
Investments held to maturity				0				0	0
Research and development costs								14,800,000	13,500,000	$ 13,000,000.0
Advertising expense								800,000	800,000	1,700,000
Cost of sales	$ 86,090,000	$ 89,233,000	$ 88,392,000	$ 84,494,000	$ 80,107,000	$ 81,927,000	$ 83,886,000	$ 349,908,000	330,414,000	281,581,000
Vesting percentage								20.00%
Payments to representatives								$ 46,100,000	47,800,000	51,800,000
Extended product warranties, minimum length								6 months
Extended product warranties, maximum length								10 years
Shipping and Handling
Schedule of Accounting Policies [Line Items]
Cost of sales								$ 14,400,000	$ 12,600,000	$ 11,400,000
Foreign Sales Revenue, Net
Schedule of Accounting Policies [Line Items]
Concentration risk, percentage								3.00%	3.00%	4.00%
Sales Revenue, Net
Schedule of Accounting Policies [Line Items]
Number of major customers \| customer								1	1	1
Accounts Receivable
Schedule of Accounting Policies [Line Items]
Number of major customers \| customer								1,000,000