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v3.19.1

Principles of Consolidation (Details Textual) $ in Billions | Mar. 31, 2019 USD ($)
--- | ---
Assets under Management, Carrying Amount | $ 2.2
PENNSYLVANIA |
Number of Stores | 15
MARYLAND |
Number of Stores | 1

X
- Definition The carrying amount of assets an investment adviser manages on behalf of investors. + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Represents the number of stores. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

X
- Details
Name: | srt_StatementGeographicalAxis=stpr_MD
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |