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Cemetery Perpetual Care Trust Investments Cemetery Perpetual Care Trust Investments (Unrealized losses on perpetual care trust investments) (Details) (Perpetual Care Trust Invesments [Member], USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Gain (Loss) on Investments [Line Items]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value $ 6,066 $ 11,131
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses (614) (834)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 909 2,463
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses (301) (645)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 6,975 13,594
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses (915) (1,479)
US Common Stock Securities [Member]
    
Gain (Loss) on Investments [Line Items]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 1,684 3,231
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses (463) (593)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 577 608
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses (106) (376)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 2,261 3,839
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses (569) (969)
Preferred Stock securities [Member]
    
Gain (Loss) on Investments [Line Items]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value   664
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses   (34)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value   1,459
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses   (153)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value   2,123
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses   (187)
Corporate Debt Securities [Member]
    
Gain (Loss) on Investments [Line Items]    
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value 4,382 7,236
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses (151) (207)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 332 396
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses (195) (116)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 4,714 7,632
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses $ (346) $ (323)