Description of Business and Summary of Significant Accounting Policies Advertising Costs (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Advertising Costs [Abstract]
Advertising Expense	$ 3,400	$ 1,300
Capitalized Direct Response Advertising Costs [Line Items]
Capitalized Direct Response Advertising costs (net of amortization)	$ 141
Document Period End Date	Jun. 30, 2016
Minimum [Member]
Capitalized Direct Response Advertising Costs [Line Items]
Capitalized Direct Response Advertising Costs, Amortization Period	12 months
Maximum [Member]
Capitalized Direct Response Advertising Costs [Line Items]
Capitalized Direct Response Advertising Costs, Amortization Period	24 months