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Acquisition Activity - Additional Information (Details) $ / shares in Units, $ in Thousands | Jan. 24, 2019 USD ($) item $ / shares shares | Dec. 17, 2018 USD ($) | Jul. 26, 2018 USD ($) item $ / shares shares | Jun. 30, 2019 USD ($) | May 31, 2004 USD ($)
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Business Acquisition [Line Items] |  |  |  |  |
Business Acquisition, Transaction Costs |  |  | $ 1,800 |  |
Number Of Banking Centers | item | 22 |  | 19 |  |
First Personal |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Common shares fraction multiplier | $ / shares |  |  | $ 42.95 |  |
Business Combination, Consideration Transferred |  |  | $ 15,600 |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares |  |  | 161,875 |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  | $ 8,689 |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt |  |  | $ 4,124 |  |
First Personal Statutory Trust I [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt |  |  |  |  | $ 4,124
Business Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Debt RedeemedBusiness Combination Recognized Identifiable Assets Acquired and Liabilities Assumed Debt Redeemed |  | $ 4,124 |  |  |
First Personal Statutory Trust I [Member] | LIBOR [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Preferred Securities, Variable Interest Rate |  | 2.75% |  |  |
AJSB [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Common shares fraction multiplier | $ / shares | $ 43.01 |  |  |  |
Business Combination, Consideration Transferred | $ 32,900 |  |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares | shares | 416,478 |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired | $ 15,743 |  |  |  |
Business Acquisition, Transaction Costs | $ 2,100 |  |  |  |
Business Combinations, Adjustment to Consideration amount |  |  |  | $ 365 |
Number Of Shares Held, Hundred Or More [Member] | First Personal |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business Combination, Considerations, Number of Shares Transferred Per Share | shares |  |  | 0.1246 |  |
Business Combinations, Consideration, Amount Of Cash Paid Per Share | $ / shares |  |  | $ 6.67 |  |
Number Of Shares Held, Hundred Or More [Member] | AJSB [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business Combinations, Consideration, Amount Of Cash Paid Per Share | $ / shares | $ 7.20 |  |  |  |
Number of Shares Held, Less Than Hundred [Member] | First Personal |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business Combination, Considerations, Number of Shares Transferred Per Share | shares |  |  | 0 |  |
Business Combinations, Consideration, Amount Of Cash Paid Per Share | $ / shares |  |  | $ 12.12 |  |
Number of Shares Held, Less Than Hundred [Member] | AJSB [Member] |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Business Combination, Considerations, Number of Shares Transferred Per Share | shares | 0.2030 |  |  |  |
Business Combinations, Consideration, Amount Of Cash Paid Per Share | $ / shares | $ 16.00 |  |  |  |

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- Definition Amount of consideration adjusted which was paid to the paid to the holders of AJSB stock options as of the effective time of the merger (during the first quarter of 2019) for the cash-out of those options, per the terms of the AJSB Merger Agreement had not been recognized as part of the consideration paid in connection with the acquisition. + References No definition available. + Details
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