Investments (OTTI by Asset Type) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
OTTI Losses Gross	$ 342	$ 1,282	$ 4,494	$ 7,827
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income	0	0	10	0
OTTI Losses Recognized in Earnings	342	1,282	4,484	7,827
AFS Fixed Income Securities [Member]
OTTI Losses Gross		253	1,175	1,446
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income		0	10	0
OTTI Losses Recognized in Earnings		253	1,165	1,446
AFS Fixed Income Securities [Member] \| Corporate Securities [Member]
OTTI Losses Gross		253	1,077	1,445
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income		0	0	0
OTTI Losses Recognized in Earnings		253	1,077	1,445
AFS Fixed Income Securities [Member] \| Residential Mortgage Backed Securities [Member]
OTTI Losses Gross			98	1
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income			10	0
OTTI Losses Recognized in Earnings			88	1
Total AFS Securities [Member] \| Equity Securities [Member]
OTTI Losses Gross	342	1,029	3,319	6,381
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income	0	0	0	0
OTTI Losses Recognized in Earnings	342	1,029	3,319	6,381
Common Stock [Member] \| Total AFS Securities [Member] \| Equity Securities [Member]
OTTI Losses Gross	342	1,029	3,316	6,201
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income	0	0	0	0
OTTI Losses Recognized in Earnings	$ 342	$ 1,029	3,316	6,201
Preferred Stock [Member] \| Total AFS Securities [Member] \| Equity Securities [Member]
OTTI Losses Gross			3	180
Other-than-temporary impairments on fixed income securities recognized in other comprehensive income			0	0
OTTI Losses Recognized in Earnings			$ 3	$ 180

The amount by which the fair value of an investment is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 35
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e25351-111560

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- Definition

Amount before tax of other than temporary impairment (OTTI) loss on investments in available-for-sale and held-to-maturity debt securities, recognized in other comprehensive loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 10A
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=66004124&loc=SL7669646-108580

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 35
-Paragraph 35
-URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e25362-111560

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- Definition

The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 8B
-URI http://asc.fasb.org/extlink&oid=73527792&loc=SL6284393-111563

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