Stockholders' Equity (Deficit) - Summary of Stock Option Activity (Details) - $ / shares shares in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2022	Dec. 31, 2021
Equity [Abstract]
Options awards outstanding, Beginning balance	353
Options awards outstanding, Cancelled/Forfeited	(37)
Options awards outstanding, Ending balance	316	353
Options awards outstanding, weighted average exercise price, Beginning balance	$ 225.97
Options awards outstanding, weighted average exercise price, Cancelled/Forfeited	161.72
Options awards outstanding, weighted average exercise price, Expired	175.77
Options awards outstanding, weighted average exercise price, Ending balance	$ 231.87	$ 225.97
Options awards outstanding, Weighted Average Remaining Contractual Life (in Years)	3 years 8 months 12 days	3 years 9 months 18 days
Options awards exercisable, Option Awards	300	336
Options awards exercisable, Weighted Average Exercise Price	$ 237.58	$ 230.93
Options awards exercisable, Weighted Average Remaining Contractual Life (in Years)	3 years 7 months 6 days	3 years 7 months 6 days

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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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.

+ References

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-Publisher FASB
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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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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
-Name Accounting Standards Codification
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-Section 50
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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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- Definition

Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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-Publisher FASB
-Name Accounting Standards Codification
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