Fair Value Disclosures (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfers between Level 1 and Level 2 financial assets	$ 0	$ 0
Remaining goodwill	0	0	$ 0
Fixed Maturity and Equity Securities | IDC | Level 3 | Market Approach Valuation Technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	5,661,000	304,000
Priced Internally | Fixed Maturity and Equity Securities | Level 3 | Market Approach Valuation Technique
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets	$ 102,322,000	$ 65,600,000