Note 7. Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2015	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Goodwill		$ 56,452		$ 56,452		$ 50,318
Intangible Assets, Net (Excluding Goodwill)		16,706		16,706		$ 12,135
Amortization of Intangible Assets		525	$ 679	929	$ 1,358
Fully Insured Segment Member
Amortization of Intangible Assets		$ 382	$ 492	$ 645	$ 984
GAF Acquiree Member
Goodwill	$ 6,134
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	5,500
GAF Acquiree Member | Fully Insured Segment Member
Goodwill	6,134
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	5,500
GAF Acquiree Member | Fully Insured Segment Member | Trademarks
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 1,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	8 years
GAF Acquiree Member | Fully Insured Segment Member | Customer Relationships
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 4,500
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 years