Summary of Significant Accounting Policies Cost of Customer Relationships Acquired (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Number of Years-Cost of Customer Relationship Acquired Amortization	5 years
Number of years of available premiums	30 years
2014	$ 1,894
2015	1,676
2016	1,531
2017	1,401
2018	1,284
Thereafter	14,251
Net	22,037
Effects of unrealized (gains) losses on CCRA	(452)
Total	21,585	$ 23,542	$ 23,374	$ 25,116
Intangible Assets Arising from Insurance Contracts Acquired in Business Combination, Additions	0	2,762	0
Intangibles Assets Arising from Insurance Contracts Acquired in Business Combination, Amortization Expense	(2,317)	(2,182)	(2,408)
Intangible Assets Arising from Insurance Contracts Acquired in Business Combination, Period Increase (Decrease)	$ 360	$ (412)	$ 666
Customer Relationships [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	3.70%
Customer Relationships [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	8.50%