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Concentration of Credit Risk (Details Narrative) (10-K) | Dec. 31, 2017 USD ($) Integer
--- | ---
Number of commercial banks has companies operating cash | Integer | 2
Commercial Bank One [Member] |
Cash FDIC insured amount | $ 2,900,393
Commercial Bank Two [Member] |
Cash FDIC insured amount | $ 2,184

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- Definition Number of commercial banks has companies operating cash. + References No definition available. + Details
Name: | PCSA_NumberOfCommercialBanks
Namespace Prefix: | PCSA_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation. + References No definition available. + Details
Name: | us-gaap_CashFDICInsuredAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivablesByIndustryOfCounterpartyTypeAxis=PCSA_CommercialBankOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivablesByIndustryOfCounterpartyTypeAxis=PCSA_CommercialBankTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |