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Income Taxes (Schedule of the Reconciliation of Unrecognized Tax Benefits) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Income Tax Disclosure [Abstract]      
Balance at January 1 $ 1,194 $ 1,117 $ 1,208
Changes in unrecognized tax benefits as a result of tax positions taken during a prior year 407 10 (107)
Changes in unrecognized tax benefits as a result of tax position taken during the current year 311 277 267
Decreases in unrecognized tax benefits relating to settlements with taxing authorities
Reductions to unrecognized tax benefits as a result of a lapse of the applicable statute of limitations (289) (210) (251)
Balance at December 31 $ 1,623 $ 1,194 $ 1,117