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Number of additional shares authorized for issuance under share-based payment arrangement.

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No definition available.

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No definition available.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Weighted average price of options that were either forfeited or expired.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Gross number of share options (or share units) granted during the period.

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No definition available.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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-Publisher FASB
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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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No definition available.

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Stockholders' Equity - Schedule of 2017 Plan Options Outstanding (Details) - 2017 Plan - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	12 Months Ended
	Jan. 01, 2020	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Number of Shares/Number of Options Outstanding
Outstanding at beginning of period (in shares)	491,950	491,950
Annual additional options authorized (in shares)		0
Granted (in shares)		100,100
Exercised (in shares)		0
Forfeited (in shares)		(32,129)
Outstanding at end of period (in shares)		559,921	491,950
Weighted- average Exercise Price
Outstanding (in dollars per share)		$ 22.61	$ 24.08
Granted (in dollars per share)		13.17
Exercised (in dollars per share)		0.00
Forfeited (in dollars per share)		$ 16.64
Weighted- average Remaining Contractual Term (years)
Outstanding		8 years 4 months 24 days		8 years 5 months 5 days
Aggregate Intrinsic Value (in Thousands)
Outstanding		$ 0	$ 82
Options to purchase common stock
Number of Shares/Number of Options Outstanding
Annual additional options authorized (in shares)	167,457
Granted (in shares)		100,100