Troubled Debt Restructurings (Narrative) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019 USD ($) contract	Dec. 31, 2018 USD ($) contract
Financing Receivable, Modifications [Line Items]
Number of troubled debt restructured loans	19	19
Loan is considered payment default	30 days
Financing Receivable, Modifications, Nonaccrual, Number of Contracts	6	2
Financing Receivable, Modifications, Nonaccrual, Recorded Investment | $	$ 1,300	$ 118
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	1
Total troubled debt restructured loans | $	$ 3,800	$ 3,800