Note 4. Investments: Schedule of Unrealized Loss on Investments (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Corporate Debt Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 2,439	$ 8,538
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	30	57
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		1,154
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses		9
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	2,439	9,692
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	30	66
Residential Mortgage Backed Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	1
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	1
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		348
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses		40
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	1	348
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	1	40
Commercial Mortgage Backed Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	224	215
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	166	364
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	224	215
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	166	364
US States and Political Subdivisions Debt Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	2,674	576
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	9	12
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	2,674	576
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	9	12
Debt Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	5,114	11,961
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	40	112
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	224	2,127
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	166	416
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	5,338	14,088
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	206	528
Nonredeemable Preferred Stock
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	312
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	1
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	312
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	1
Equity Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	312	446
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	1	22
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	312	446
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	1	22
US Government-sponsored Enterprises Debt Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		2,847
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses		43
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		410
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses		3
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		3,257
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses		46
COMMON STOCK
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		446
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses		22
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value		446
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses		$ 22