Note 6 - Loans (Details) - Troubled Debt Restructurings Removed from Classification - Jun. 30, 2014 $ in Thousands	USD ($)	USD ($)
Troubled Debt Restructurings Removed from Classification [Abstract]
Carrying balance	$ 6,543	$ 7,499
Count	1	4

The amount of the outstanding recorded investment related to financing receivables that have been removed from troubled debt restructuring classification.

No definition available.

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