Employee Benefits (Employee Benefit Plans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Employee Benefits [Abstract]
Health benefits, including premiums	$ 16,228	$ 13,020
401(k) matching	2,510	1,861
Deferred bonus plan	727	722
Employee benefit costs	$ 19,465	$ 15,603