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Loans and Leases - Schedule of Outstanding Principal and Carrying Amount of Loans Acquired (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Total Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance | $ 3,623 | $ 3,652
Carrying amount | 3,439 | 3,438
VIST Financial Corp. (VIST Financial) | Acquired Credit Impaired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance | 11,267 | 12,822
Carrying amount | 9,651 | 11,036
VIST Financial Corp. (VIST Financial) | Acquired Non-Credit Impaired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance | 220,563 | 256,265
Carrying amount | 218,806 | 254,162
VIST Financial Corp. (VIST Financial) | Total Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Outstanding principal balance | 231,830 | 269,087
Carrying amount | $ 228,457 | $ 265,198

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