Nature of Operations and Summary of Significant Accounting Policies - Recent Accounting Changes (Details) - USD ($) $ in Thousands	Jan. 01, 2020	Dec. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets		$ 20,747
Operating lease liabilities		$ 21,421
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease assets			$ 23,300
Operating lease liabilities			$ 23,800
Minimum | Forecast | ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in Allowance, Percent	55.00%
Maximum | Forecast | ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase in Allowance, Percent	65.00%
Unfunded dommitment | Forecast | ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reserve for potential losses from unfunded commitments	$ 18,000