Summary of Significant Accounting Policies (Narratives) (Details)	Sep. 30, 2019 USD ($)
Significant Accounting Policies [Line Items]
Operating lease, right-of-use asset	$ 62,576,000
Operating lease, liability	79,306,000
ASU 2016-02
Significant Accounting Policies [Line Items]
Operating lease, right-of-use asset	64,600
Operating lease, liability	$ 79,500