Note 13. Fair Value of Financial Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Assets
Cash equivalents	$ 1,709	$ 11,227
Equity securities	5,294	5,781
Bonds	18,917	7,644
Non-qualified deferred compensation plan investments	2,239	1,958
Total assets at fair value	28,159	26,610
Liabilities
Interest rate swaps	69	175
Total liabilities at fair value	69	175
Level 1
Assets
Cash equivalents	1,709	11,227
Equity securities	5,294	5,781
Bonds	0	0
Non-qualified deferred compensation plan investments	2,239	1,958
Total assets at fair value	9,242	18,966
Liabilities
Interest rate swaps	0	0
Total liabilities at fair value	0	0
Level 2
Assets
Cash equivalents	0	0
Equity securities	0	0
Bonds	18,917	7,644
Non-qualified deferred compensation plan investments	0	0
Total assets at fair value	18,917	7,644
Liabilities
Interest rate swaps	69	175
Total liabilities at fair value	69	175
Level 3
Assets
Cash equivalents	0	0
Equity securities	0	0
Bonds	0	0
Non-qualified deferred compensation plan investments	0	0
Total assets at fair value	0	0
Liabilities
Interest rate swaps	0	0
Total liabilities at fair value	$ 0	$ 0