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Income Taxes - Schedule of Unrecognized Tax Benefits (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]    
Balance - beginning of year $ 1,678 $ 1,901
Additions based on tax positions related to the current year 52 564
Additions for tax positions of prior years 5 0
Reductions for tax positions of prior years (503) (468)
Settlements 0 (40)
Lapse in statutes of limitations (106) (279)
Uncertain tax positions, ending balance $ 1,126 $ 1,678