Note 7. Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 30, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Goodwill		$ 53,371		$ 53,371		$ 50,318
Intangible Assets, Net (Excluding Goodwill)		16,083		16,083		$ 12,135
Amortization of Intangible Assets		542	$ 653	1,471	$ 2,011
Fully Insured Segment Member
Goodwill, Written off Related to Sale of Business Unit		3,081
Net Intangible Assets Written off Related to Sale Of Business Unit		81
Amortization of Intangible Assets		$ 425	$ 493	$ 1,070	$ 1,477
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