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Note 16 - Concentration of Risk (Details Textual) - USD ($) | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Debt Securities, Available-for-sale, Realized Loss |  | $ 62,000
Accounts Receivable [Member] | Customer Concentration Risk [Member] |  |
Concentration Risk Threshold Percentage | 10.00% | 10.00%
Revenue Benchmark [Member] | Customer Concentration Risk [Member] |  |
Concentration Risk Threshold Percentage | 10.00% | 10.00%

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- Definition The concentration risk threshold percentage derived from quantitative amount. + References No definition available. + Details
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Namespace Prefix: | apt_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27357-111563 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | debit
Period Type: | duration

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- Details
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Data Type: | na
Balance Type: |
Period Type: |