Note 18 - Commitments, Guarantees and Other Contingencies (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2015
Note 18 - Commitments, Guarantees and Other Contingencies (Details) [Line Items]
Maximum Potential Commitment Under Letters of Credit	$ 2,700,000		$ 3,500,000
Reserve for Unfunded Commitments	472,000plmt_ReserveForUnfundedCommitments		219,000plmt_ReserveForUnfundedCommitments
Subscription Agreement Payment	250,000plmt_SubscriptionAgreementPayment	350,000plmt_SubscriptionAgreementPayment
Subscription Agreement [Member]
Note 18 - Commitments, Guarantees and Other Contingencies (Details) [Line Items]
Percent of Capital Commitments			1.30%
Guarantor Obligations, Current Carrying Value			$ 1,400,000

Maximum potential commitment the company may be obligated to under letters of credit.

No definition available.

Name:	plmt_MaximumPotentialCommitmentUnderLettersOfCredit
Namespace Prefix:	plmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	plmt_Note18CommitmentsGuaranteesandOtherContingenciesDetailsLineItems
Namespace Prefix:	plmt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

This item represents the portion of the Fund's total capital commitment that is comprised of contractual obligations.

+ References

No definition available.

+ Details

Name:	plmt_PercentOfCapitalCommitments
Namespace Prefix:	plmt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Carrying amount of reserve for unfunded commitments.

+ References

No definition available.

+ Details

Name:	plmt_ReserveForUnfundedCommitments
Namespace Prefix:	plmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of payments made towards the subscription agreement obligation.

+ References

No definition available.

+ Details

Name:	plmt_SubscriptionAgreementPayment
Namespace Prefix:	plmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 460

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

+ Details

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

- Details

Name:	us-gaap_GuaranteeObligationsByNatureAxis=plmt_SubscriptionAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: