Note 16 - Commitments, Guarantees and Other Contingencies (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Text Block]
Maximum Potential Commitment Under Letters Of Credit	$ 3,200,000	$ 3,600,000
Reserve For Unfunded Commitments	$ 294,000	$ 367,000

Maximum potential commitment under letters of credit.

No definition available.

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