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Organization and Summary of Significant Accounting Policies - Stock Based Compensation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]      
Allocated share-based compensation $ 2,243 $ 1,460 $ 1,467