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Description of Business and Summary of Significant Accounting Policies (Details 2) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Allowance for Doubtful Accounts Receivable [Roll Forward]      
Balance at beginning of period $ 227 $ 930 $ 130
Additions charged (reversals credited) to expenses (29) 310 $ 800
Deductions [1] (16) (1,013)
Balance at end of period $ 182 $ 227 $ 930
[1] Uncollectible accounts written off.