Number of warrants exercised.

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- Definition

Warrant expiration period.

+ References

No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

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- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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- Definition

Number of warrants or rights outstanding.

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No definition available.

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- Definition

The number of warrants or rights which entitle the entity to receive future services in exchange for the unvested, forfeitable warrants or rights.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 50
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-Paragraph 1
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- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
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Amount of noncash expense for share-based payment arrangement.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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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.

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- Definition

The highest quantity of shares an employee can purchase under the plan per period.

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

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of shares issued under share-based payment arrangement.

+ References

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- Definition

Number of new stock issued during the period.

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- Definition

Expiration date of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Stock-Benefit Plans and Equity Transactions - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 31, 2019	Dec. 31, 2017	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2017	Jun. 16, 2021	Jun. 17, 2020	May 09, 2020	Apr. 08, 2020	Jun. 30, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrants outstanding			20,525,288		20,525,288
Stock-based compensation					$ 15,970	$ 8,143
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued			12,421,000
Mr. Miles
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration period		5 years
Number of warrants exercised					0
Number of warrants issued (in shares)		1,327,434					1,327,434
Exercise price of warrants		$ 5.00					$ 5.00
Stock-based compensation							$ 1,400
Safe Op Surgical Inc
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration period					5 years
Proceeds from exercise of warrant					$ 100
Number of warrants exercised			0	0	969,932	0
Warrants outstanding			1,194,943		1,194,943
Number of warrants issued (in shares)			2,200,000		2,200,000
Exercise price of warrants			$ 3.50		$ 3.50
2017 PIPE Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration period					5 years
Proceeds from exercise of warrant			$ 800		$ 1,000	$ 300
Number of warrants exercised			375,000	0	520,000	125,000
Warrants outstanding			2,587,000		2,587,000
Exercise price of warrants			$ 2.00		$ 2.00
2018 Common Stock Warrants
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Warrant expiration period					5 years
Proceeds from exercise of warrant			$ 1,000		$ 1,300	$ 900
Number of warrants exercised			693,335	0	2,841,116	2,059,524
Warrants outstanding			8,538,569		8,538,569
Exercise price of warrants			$ 3.50		$ 3.50
Squadron Medical \| Participant Lender
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants exercised					0
Warrants outstanding										6,759,530
Number of warrants issued (in shares)										1,075,820		4,838,710	845,000
Exercise price of warrants										$ 4.88		$ 2.17	$ 3.15
Warrants And Rights Outstanding Maturity Date										May 29, 2027
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant			662,036		662,036			500,000
2016 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant			3,827,639		3,827,639				7,000,000
2017 Distributor Inducement Plan \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of warrants issued (in shares)			195,000		195,000
Number of warrants available to be granted			575,000		575,000
2017 Distributor Inducement Plan \| Board of Directors Chairman \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share authorized grant of common stock		1,000,000					1,000,000
2017 Distributor Inducement Plan \| Restricted Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted under the plan					284,500
Number of stock units issued					84,500
2017 Development Services Plan \| Board of Directors Chairman \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant											7,000,000
Common stock issued					0
2017 Development Services Plan \| Restricted Common Stock \| Board of Directors Chairman
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted under the plan					6,709,000
2019 Management Objective Strategic Incentive Plan \| Board of Directors Chairman \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share authorized grant of common stock	500,000
Maximum grant of shares per participant	50,000
2019 Management Objective Strategic Incentive Plan \| Unvested Restricted Stock Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares granted under the plan					130,000
2019 Management Objective Strategic Incentive Plan \| Unvested Restricted Stock Award \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common stock shares available for purchase under the plan			25,000		25,000