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Shareholders' Equity (Narrative) (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended | 1 Months Ended | 12 Months Ended |  |  |  | 0 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 0 Months Ended | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Aug. 31, 2012 Share Option Plan (2004) [Member] | Dec. 31, 2013 Share Option Plan (2004) [Member] | Dec. 31, 2007 Share Option Plan (2004) [Member] | Jul. 31, 2004 Share Option Plan (2004) [Member] | Dec. 31, 2013 2013 Plan [Member] | Oct. 31, 2013 2013 Plan [Member] | Oct. 15, 2008 $3.82 [Member] Share Option Plan (2004) [Member] | Dec. 31, 2013 $3.82 [Member] Share Option Plan (2004) [Member] | Dec. 21, 2010 $18.82 [Member] Share Option Plan (2004) [Member] | Dec. 31, 2013 $18.82 [Member] Share Option Plan (2004) [Member] | Sep. 13, 2012 $15.28 [Member] Share Option Plan (2004) [Member] | Dec. 31, 2013 $15.28 [Member] Share Option Plan (2004) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares authorized |  |  |  |  |  |  | 282,750 | 500,000 | 500,000 |  |  |  |  |  |
Additional shares authorized |  |  |  | 500,000 |  | 582,750 |  |  |  |  |  |  |  |  |
Options granted |  |  |  |  |  |  |  |  |  | 200,000 |  | 137,500 |  | 240,000 |
Exercise price of options |  | $ 15.28 |  |  |  |  |  |  |  | $ 3.82 |  | $ 18.82 |  | $ 15.28 |
Expiration date |  |  |  |  |  |  |  |  |  | Oct. 15, 2016 |  | Dec. 21, 2018 |  | Sep. 13, 2020 |
Closing price to determine expiration date |  |  |  |  |  |  |  |  |  | $ 1.91 |  | $ 9.41 |  | $ 7.64 |
Percentage of options that vest and become exercisable on the second anniversary of the grant date |  |  |  |  |  |  |  |  |  | 50.00% |  | 50.00% |  | 50.00% |
Percentage of options that vest and become exercisable on the third anniversary of the grant date |  |  |  |  |  |  |  |  |  | 50.00% |  | 50.00% |  | 50.00% |
Aggregate intrinsic value of options outstanding | $ 8,152 | $ 1,199 |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate intrinsic value of options exercisable | 1,143 | 566 |  |  |  |  |  |  |  |  |  |  |  |  |
Total intrinsic value of options exercised | 1,119 | 1,191 |  |  |  |  |  |  |  |  |  |  |  |  |
Intrinsic value of options at the date of grant | $ 0 | $ 0 |  |  |  |  |  |  |  |  |  |  |  |  |
Expense related to grant | 668 | 544 | 437 |  |  |  |  |  |  |  |  |  | 149 |  | 519
Unrecognized compensation costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 566
Weighted average period for grant to be recognized |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year 2 months 9 days
Option expiration term |  |  |  |  | 10 years |  |  |  |  |  |  |  |  |  |
Conversion rate |  |  |  |  | 1:1 |  |  |  |  |  |  |  |  |  |
Capital gains tax | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |

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