Represents the number of warrants or rights outstanding as of the specified date.

No definition available.

Name:	pali_ClassOfWarrantOrRightNumberOutstanding
Namespace Prefix:	pali_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the number of warrants or rights for which the put feature was settled during the period.

+ References

No definition available.

+ Details

Name:	pali_ClassOfWarrantOrRightPutFeatureSettled
Namespace Prefix:	pali_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- 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 https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- 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.

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- 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

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section S99
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=6784392&loc=d3e188667-122775

+ Details

Name:	us-gaap_ClassOfWarrantOrRightUnissued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312

+ Details

Name:	us-gaap_DerivativeLiabilitiesNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of share options (or share units) exercised during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(02)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644

+ Details

Name:	us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

+ Details

Name:	us-gaap_WarrantsAndRightsOutstandingMeasurementInput
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

Note 4 - Fair Value Measurements (Details)	1 Months Ended	3 Months Ended	6 Months Ended
Note 4 - Fair Value Measurements (Details)	May 31, 2021 shares	Jun. 30, 2021 $ / shares shares	Jun. 30, 2022 USD ($) $ / shares shares	Mar. 31, 2022 shares	Jan. 31, 2022 USD ($) shares	Dec. 31, 2021 USD ($) shares	Aug. 19, 2021 $ / shares shares	Jul. 21, 2021 USD ($) $ / shares shares	May 20, 2021 $ / shares shares	Dec. 16, 2020 shares
Warrant liability \| $			$ 469,000			$ 2,651,000
Warrants and Rights Outstanding, Measurement Input \| $								3,900,000
Warrants exercise price \| $ / shares							$ 3.45
Warrants to purchase common stock \| shares							377,474
Warrants exercised \| shares			0
Warrants outstanding \| shares			9,213,008			7,181,741
May 2022 Registered Direct Offering
Warrants to purchase shares of common stock \| shares			3,646,690
May 2022 Registered Direct Offering to Placement Agent
Warrants to purchase shares of common stock \| shares			218,801
Measurement Input, Price Volatility [Member] \| Investor Warrants [Member]
Warrants and Rights Outstanding, Measurement Input \| $			74.6
Measurement Input, Expected Term [Member] \| Investor Warrants [Member]
Warrants and Rights Outstanding, Measurement Input			4.1
Measurement Input, Expected Dividend Rate [Member] \| Investor Warrants [Member]
Warrants and Rights Outstanding, Measurement Input			0
Maximum [Member]
Warrants exercise price \| $ / shares			$ 694.80
Senior Secured Promissory Note Warrants [Member] \| Investor Warrants [Member]
Warrant liability \| $			$ 45,000
Senior Secured Promissory Note Warrants [Member] \| Measurement Input, Share Price [Member] \| Investor Warrants [Member]
Warrants and Rights Outstanding, Measurement Input \| $			0.41
Senior Secured Promissory Note Warrants [Member] \| Measurement Input, Risk Free Interest Rate [Member] \| Investor Warrants [Member]
Warrants and Rights Outstanding, Measurement Input			3.00
Senior Secured Promissory Note Warrants [Member] \| Measurement Input, Exercise Price [Member] \| Investor Warrants [Member]
Warrants and Rights Outstanding, Measurement Input \| $			3.88
Senior Secured Promissory Note Warrants [Member] \| Altium Growth Fund, LP [Member]
Warrants to purchase shares of common stock \| shares										858,892
The Equity Warrant [Member]
Warrant liability \| $					$ 1,100,000
The Equity Warrant [Member] \| Measurement Input, Share Price [Member]
Warrants and Rights Outstanding, Measurement Input \| $					1.17
The Equity Warrant [Member] \| Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input					93.0
The Equity Warrant [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input					1.65
The Equity Warrant [Member] \| Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input					5.5
The Equity Warrant [Member] \| Altium Growth Fund, LP [Member]
Warrants exercise price \| $ / shares									$ 4.70
Warrants to purchase shares of common stock \| shares				3,994,302					4,995,893
May 2021 Warrants [Member]
Warrants exercised \| shares	5,303,568
Warrants outstanding \| shares			0
May 2021 Warrants [Member] \| Altium Growth Fund, LP [Member]
Warrants exercise price \| $ / shares		$ 3.88
Class of warrant or right, unissued \| shares		5,303,568
July 2021 Warrants [Member]
Warrants exercise price \| $ / shares								$ 3.63
July 2021 Warrants [Member] \| Maximum [Member]
Warrants to purchase common stock \| shares								1,100,000
January 2022 [Member]
Warrant liability \| $			$ 300,000
January 2022 [Member] \| Measurement Input, Share Price [Member]
Warrants and Rights Outstanding, Measurement Input \| $			0.40
January 2022 [Member] \| Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input			90.7
January 2022 [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input			3.01
January 2022 [Member] \| Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input			5.08
January 2022 [Member] \| Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input			0
January 2022 [Member] \| Maximum [Member]
Warrants to purchase common stock \| shares					2,250,000
July 2022 [Member]
Warrant liability \| $			$ 100,000
July 2022 [Member] \| Measurement Input, Share Price [Member]
Warrants and Rights Outstanding, Measurement Input \| $			0.40
July 2022 [Member] \| Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input \| $			93.8
July 2022 [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input			3.01
July 2022 [Member] \| Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input			4.56
July 2022 [Member] \| Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input			0
Warrants Issued in Connection with May 2016 and August 2017 Offerings [Member]
Class of Warrant or Right, Put Feature Settled (in shares) \| shares		7,813