Regulatory Matters (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2015
Regulatory Matters [Abstract]
Percentage of net profits from preceding period for which dividend is paid to surplus fund (in hundredths)		50.00%
Percentage of capital stock (in hundredths)		50.00%
Percentage of net profits from preceding period for which dividend is paid to surplus fund thereafter (in hundredths)		25.00%
Percentage of capital stock thereafter (in hundredths)		100.00%
Civil money penalty	$ 2,000	$ (290)	$ 2,290	$ 3,000