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Significant Accounting Policies (Stock-based Compensation) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended 3 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Mar. 31, 2014
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Cash settled restricted stock units, granted         115,687
Stock-based compensation expense $ 1,109 $ 990 $ 3,746 $ 3,299