Significant Accounting Policies Goodwill and Indefinite-Lived Intangible Assets (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Impairment Loss	$ 14,482,000
Impairment resulting from annual impairment test		$ 0	$ 0