Summary of significant accounting policies (Details 10) (USD $)	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012
Hurricane Sandy
Expense primarily related to the disposal of property and equipment	$ 4,979	$ 86,388
Insurance reimbursement		100,000plpm_AccruedInsuranceProceeds
Capital additions related to Hurricane Sandy	500,000
Insurance proceeds recorded as a gain in selling, general and administrative expenses	$ 301,281us-gaap_InsuranceRecoveries

Accrued insurance proceeds received under the terms of an insurance contract settlement.

No definition available.

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- Definition

Represents the amount of capital additions related to a natural disaster.

+ References

No definition available.

+ Details

Name:	plpm_CapitalAdditionsRelatedToNaturalDisaster
Namespace Prefix:	plpm_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	plpm_NaturalDisasterAbstract
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.3)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

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