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Share-Based Compensation Plans (Narrative) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 128 Months Ended 1 Months Ended 8 Months Ended 12 Months Ended 1 Months Ended 8 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2013
Time Based Awards [Member]
Dec. 31, 2012
Time Based Awards [Member]
Dec. 31, 2011
Time Based Awards [Member]
Dec. 31, 2013
Performance Based Awards [Member]
Dec. 31, 2013
Restricted Stock [Member]
Dec. 31, 2012
Restricted Stock [Member]
Dec. 31, 2011
Restricted Stock [Member]
May 31, 2002
Plan 2002 [Member]
Dec. 31, 2013
Plan 2002 [Member]
Dec. 31, 2012
Plan 2002 [Member]
Apr. 30, 2006
Plan 2006 [Member]
Dec. 31, 2013
Plan 2006 [Member]
Dec. 31, 2013
Plan 2006 [Member]
Dec. 31, 2009
Plan 2006 [Member]
Dec. 31, 2013
Plan 2006 [Member]
Time Based Awards [Member]
Dec. 31, 2012
Plan 2006 [Member]
Time Based Awards [Member]
Dec. 31, 2011
Plan 2006 [Member]
Time Based Awards [Member]
Dec. 31, 2010
Plan 2006 [Member]
Time Based Awards [Member]
Dec. 31, 2008
Plan 2006 [Member]
Time Based Awards [Member]
Dec. 31, 2013
Plan 2006 [Member]
Performance Based Awards [Member]
Dec. 31, 2012
Plan 2006 [Member]
Performance Based Awards [Member]
Dec. 31, 2011
Plan 2006 [Member]
Performance Based Awards [Member]
Dec. 31, 2010
Plan 2006 [Member]
Performance Based Awards [Member]
Dec. 31, 2008
Plan 2006 [Member]
Performance Based Awards [Member]
Apr. 30, 2005
Director Share Plan [Member]
Dec. 31, 2013
Director Share Plan [Member]
Dec. 31, 2013
Director Share Plan [Member]
Dec. 31, 2012
Director Share Plan [Member]
Dec. 31, 2011
Director Share Plan [Member]
Dec. 31, 2010
Director Share Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                                                    
Share-based compensation award reserved for issuance of common shares                       500,000     3,000,000 4,500,000                         500,000 700,000        
Share-based compensation award granted in period                           86,000                                        
Share-based compensation award, number of shares available for grant 0 0 0 0                                                            
Share-based compensation award vesting period                           1 year       3 years   3 years 3 years 3 years 3 years   3 years 3 years 3 years 3 years     1 year 1 year 1 year 1 year
Share-based compensation restricted common shares issued                                 3,319,200   2,145,300         1,173,900         435,534          
Share-based compensation expiration date                         May 31, 2012                                          
Options grant date contractual life                           10 years                                        
Share-based compensation, maximum number of shares issuable                             500,000                                      
Share-based compensation options exercised in period intrinsic value     $ 117                                                              
Share-based compensation options exercisable intrinsic value 0 0 5                                                              
Share options, exercised    0                                                                
Weighted average grant date fair value, granted         $ 6.13     $ 7.52 $ 6.13 $ 9.95 $ 15.79                                              
Share-based compensation grant value         3,330     1,873                                                    
Share-based compensation vested in period, fair value         2,177 4,413 3,743                                                      
Share-based compensation cash received 0 0 168                                                              
Employee service share-based compensation, nonvested, period for recognition         1 year 11 months 5 days     1 year 3 months                                                    
Tax benefit realized from stock based compensation $ 0 $ 0 $ 0