Organization and Summary of Significant Accounting Policies Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items]
Foreign currency translation adjustments	$ (13,024)	$ (11,362)
Unrealized losses on interest rate swaps, net of tax	$ (1,054)	$ (2,367)