Note 4. Investments: Schedule of Unrealized Loss on Investments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Corporate Debt Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 7,229	$ 8,538
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	93	57
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	359	1,154
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	11	9
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	7,588	9,692
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	104	66
Residential Mortgage Backed Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	1,846
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	15
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	1,846	348
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	15	40
Commercial Mortgage Backed Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	220	215
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	170	364
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	220	215
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	170	364
US States and Political Subdivisions Debt Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	847	576
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	4	12
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	847	576
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	4	12
Debt Securities
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	9,922	11,961
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Aggregate Losses	112	112
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	579	2,127
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Losses	181	416
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	10,501	14,088
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses	293	528
Nonredeemable Preferred Stock
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	533
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	533
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	533	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	533	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