Goodwill and Intangible Assets Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months	$ 3,509
Goodwill	14,254	$ 3,413	$ 0
Goodwill, Acquired During Period	10,841	3,413
Goodwill, Impairment Loss	0	$ 0
Finite-Lived Intangible Assets, Amortization Expense, Year Two	2,271
Finite-Lived Intangible Assets, Amortization Expense, Year Three	2,159
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,071
Finite-Lived Intangible Assets, Amortization Expense, Year Five	$ 358