Troubled Debt Restructuring Defaults (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)
Financing Receivable, Modifications, Subsequent Default [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 1,259
Commercial Real Estate Other Loans [Member]
Financing Receivable, Modifications, Subsequent Default [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 1,259
Commercial Real Estate Loans, Total [Member]
Financing Receivable, Modifications, Subsequent Default [Line Items]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	1
Financing Receivable, Modifications, Subsequent Default, Recorded Investment	$ 0	$ 1,259