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Cemetery Perpetual Care Trust Investments (Unrealized losses on perpetual care trust investments) (Details) (Perpetual Care Trust Invesments [Member], USD $)
In Thousands, unless otherwise specified
 9 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Gain (Loss) on Investments [Line Items]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value $ 19,992 $ 11,131
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses (810) (834)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 680 2,463
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses (393) (645)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 20,672 13,594
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses (1,203) (1,479)
Foreign Debt [Member]
    
Gain (Loss) on Investments [Line Items]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 1,409  
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses (25)  
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 0  
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses 0  
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 1,409  
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses (25)  
Corporate Debt [Member]
    
Gain (Loss) on Investments [Line Items]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 10,410 7,236
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses (359) (207)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 487 396
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses (315) (116)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 10,897 7,632
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses (674) (323)
Common Stock [Member]
    
Gain (Loss) on Investments [Line Items]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 2,383 3,231
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses (171) (593)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 193 608
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses (78) (376)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 2,576 3,839
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses (249) (969)
Preferred Stock [Member]
    
Gain (Loss) on Investments [Line Items]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 5,790 664
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses (255) (34)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 0 1,459
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses 0 (153)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 5,790 2,123
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses $ (255) $ (187)