Note 8. Related-party Transactions (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2013		Sep. 30, 2012
Selling, general and administrative expenses	$ 13,834	[1]	$ 9,877	[2]	$ 40,835	[3]	$ 26,887	[4]
IHCAffiliatedEntityMember
Selling, general and administrative expenses	$ 233		$ 273		$ 672		$ 862

[1] $4,762 from related parties

[2] $3,571 from related parties

[3] $14,263 from related parties

[4] $9,500 from related parties