Note 5. Cash Flow Hedge (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Notes Payable to Banks
Long Term Debt Percentage Bearing Fixed Interest Rate	4.95%	4.95%
Interest Rate Swap
Derivative Liability Notional Amount	$ 8,000	$ 8,000
Derivative Fixed Interest Rate	1.60%	1.60%
Derivative Liability, Fair Value, Gross Liability	318	363
Interest Rate Swap | Accounts Payable and Accrued Liabilities
Derivative Liability, Fair Value, Gross Liability	$ 318	$ 363