Note 7. Share-based Compensation Share-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Share-based compensation expense [Abstract]
Salaries, wages and employee benefits	$ 789	$ 7,646	$ 6,075	$ 10,976
Defined income tax benefit	(302)	(2,981)	(2,327)	(4,280)
Net share-based compensation expense	$ 487	$ 4,665	$ 3,748	$ 6,696