Goodwill and Intangibles Qtlry (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill, Acquired During Period	$ 0	$ 3,519
Amortization of Intangible Assets	6,100	5,000	$ 2,700
Goodwill, Other Changes	0	(1,202)
Goodwill Impairment	$ 0	$ 0