Note 8. Related-party Transactions (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Selling, general and administrative expenses	$ 14,397	[1]	$ 8,417	[2]	$ 27,001	[3]	$ 17,010	[4]
IHCAffiliatedEntityMember
Selling, general and administrative expenses	$ 210		$ 282		$ 439		$ 589

[1] $7,414 from related parties

[2] $2,809 from related parties

[3] $9,501 from related parties

[4] $5,929 from related parties