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Summary of Significant Accounting Policies - Use of Estimates Additional Information (Details) - Service Life
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2015
USD ($)
$ / shares
Change in Accounting Estimate [Line Items]  
Change in accounting estimate, effect on depreciation and amortization $ (1,690)
Change in accounting estimate, effect on net income $ 1,016
Change in accounting estimate, increase (decrease) in earning per share basic and diluted (in dollars per share) | $ / shares $ 0.03