Note 14 - Commitments and Contingencies (Details) (USD $)	Sep. 30, 2014
Note 14 - Commitments and Contingencies (Details) [Line Items]
Loss Contingency Accrual	$ 59,000
Settlement Agreement [Member]
Note 14 - Commitments and Contingencies (Details) [Line Items]
Percentage of Capital Costs Agreed to be Paid to Install Filtration Systems in Water Well if Presence of Nematocide Exceeds Specified Levels and for Maintenance and Operating Costs	90.00%

Represents the percentage of capital costs to install filtration systems in water wells if the presence of a nematocide, commonly known as DBCP, exceeds specified levels, and for the ongoing maintenance and operating cost.

No definition available.

Name:	mlp_PercentageOfCapitalCostsAgreedToBePaidToInstallFiltrationSystemsInWaterWellIfPresenceOfNematocideExceedsSpecifiedLevelsAndForMaintenanceAndOperatingCosts
Namespace Prefix:	mlp_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant