Note 7. Related-party Transactions (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Selling, general and administrative expenses	$ 16,215	[1]	$ 13,834	[2]	$ 53,703	[3]	$ 40,835	[4]
IHCAffiliatedEntityMember
Selling, general and administrative expenses	$ 212		$ 233		$ 689		$ 672

[1] $5,838 from related parties

[2] $4,762 from related parties

[3] $16,394 from related parties

[4] $14,263 from related parties