Annual report pursuant to Section 13 and 15(d)

Income Taxes (Unrecognized Tax Benefit) (Details)

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Income Taxes (Unrecognized Tax Benefit) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2015
USD ($)
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]  
Balance at January 1, $ 0
Increases in tax positions for prior years 268
Increases in tax positions for current years 155
Balance at December 31, $ 423