| **Marketable Securities (Details) (USD $)In Thousands, unless otherwise specified** | Jan. 31, 2015                                                                                           | Oct. 31, 2014                                                                                           |
|-------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------|
| **Investment Measurement [Line Items]**                                             |                                                                                                    |                                                                                                    |
| Current trading securities (cost)                                                   | $ 136pny_MarketableSecuritiesCurrentAtCost                                                              | $ 128pny_MarketableSecuritiesCurrentAtCost                                                              |
| Noncurrent trading securities (cost)                                                | 4,078pny_MarketableSecuritiesNoncurrentAtCost                                                           | 3,045pny_MarketableSecuritiesNoncurrentAtCost                                                           |
| Current trading securities (fair value)                                             | 198us-gaap_MarketableSecuritiesCurrent                                                                  | 214us-gaap_MarketableSecuritiesCurrent                                                                  |
| Noncurrent trading securities (fair value)                                          | 4,543us-gaap_MarketableSecuritiesNoncurrent                                                             | 3,727us-gaap_MarketableSecuritiesNoncurrent                                                             |
| Total trading securities (cost)                                                     | 4,214pny_TotalMarketableSecuritiesAtCost                                                                | 3,173pny_TotalMarketableSecuritiesAtCost                                                                |
| Total trading (fair value)                                                          | 4,741us-gaap_MarketableSecurities                                                                       | 3,941us-gaap_MarketableSecurities                                                                       |
| Money markets [Member]                                                              |                                                                                                    |                                                                                                    |
| **Investment Measurement [Line Items]**                                             |                                                                                                    |                                                                                                    |
| Current trading securities (cost)                                                   | 45pny_MarketableSecuritiesCurrentAtCost/ us-gaap_InvestmentTypeAxis= us-gaap_MoneyMarketFundsMember     | 22pny_MarketableSecuritiesCurrentAtCost/ us-gaap_InvestmentTypeAxis= us-gaap_MoneyMarketFundsMember     |
| Noncurrent trading securities (cost)                                                | 479pny_MarketableSecuritiesNoncurrentAtCost/ us-gaap_InvestmentTypeAxis= us-gaap_MoneyMarketFundsMember | 447pny_MarketableSecuritiesNoncurrentAtCost/ us-gaap_InvestmentTypeAxis= us-gaap_MoneyMarketFundsMember |
| Current trading securities (fair value)                                             | 45us-gaap_MarketableSecuritiesCurrent/ us-gaap_InvestmentTypeAxis= us-gaap_MoneyMarketFundsMember       | 22us-gaap_MarketableSecuritiesCurrent/ us-gaap_InvestmentTypeAxis= us-gaap_MoneyMarketFundsMember       |
| Noncurrent trading securities (fair value)                                          | 479us-gaap_MarketableSecuritiesNoncurrent/ us-gaap_InvestmentTypeAxis= us-gaap_MoneyMarketFundsMember   | 447us-gaap_MarketableSecuritiesNoncurrent/ us-gaap_InvestmentTypeAxis= us-gaap_MoneyMarketFundsMember   |
| Total trading (fair value)                                                          | 524us-gaap_MarketableSecurities/ us-gaap_InvestmentTypeAxis= us-gaap_MoneyMarketFundsMember             | 469us-gaap_MarketableSecurities/ us-gaap_InvestmentTypeAxis= us-gaap_MoneyMarketFundsMember             |
| Mutual funds [Member]                                                               |                                                                                                    |                                                                                                    |
| **Investment Measurement [Line Items]**                                             |                                                                                                    |                                                                                                    |
| Current trading securities (cost)                                                   | 91pny_MarketableSecuritiesCurrentAtCost/ us-gaap_InvestmentTypeAxis= us-gaap_EquityFundsMember          | 106pny_MarketableSecuritiesCurrentAtCost/ us-gaap_InvestmentTypeAxis= us-gaap_EquityFundsMember         |
| Noncurrent trading securities (cost)                                                | 3,599pny_MarketableSecuritiesNoncurrentAtCost/ us-gaap_InvestmentTypeAxis= us-gaap_EquityFundsMember    | 2,598pny_MarketableSecuritiesNoncurrentAtCost/ us-gaap_InvestmentTypeAxis= us-gaap_EquityFundsMember    |
| Current trading securities (fair value)                                             | 153us-gaap_MarketableSecuritiesCurrent/ us-gaap_InvestmentTypeAxis= us-gaap_EquityFundsMember           | 192us-gaap_MarketableSecuritiesCurrent/ us-gaap_InvestmentTypeAxis= us-gaap_EquityFundsMember           |
| Noncurrent trading securities (fair value)                                          | 4,064us-gaap_MarketableSecuritiesNoncurrent/ us-gaap_InvestmentTypeAxis= us-gaap_EquityFundsMember      | 3,280us-gaap_MarketableSecuritiesNoncurrent/ us-gaap_InvestmentTypeAxis= us-gaap_EquityFundsMember      |
| Total trading (fair value)                                                          | $ 4,217us-gaap_MarketableSecurities/ us-gaap_InvestmentTypeAxis= us-gaap_EquityFundsMember              | $ 3,472us-gaap_MarketableSecurities/ us-gaap_InvestmentTypeAxis= us-gaap_EquityFundsMember              |

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| - Definition
Marketable securities at cost, classified as current.
+ References
No definition available.
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Marketable securities at cost, classified as noncurrent.
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Total marketable securities at cost.
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Total debt and equity financial instruments including: (1) securities held-to-maturity, (2) trading securities, and (3) securities available-for-sale.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.4) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of investments in debt and equity securities, including, but not limited to, held-to-maturity, trading and available-for-sale expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26626-111562Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 2 -Article 5Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Total debt and equity financial instruments including: (1) securities held-to-maturity and (2) securities available-for-sale that will be held for the long-term.
+ References
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