Investments (Available-for-Sale Securities) (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 99,874	$ 94,497
Gross Unrealized Gains	6,549	4,800
Gross Unrealized Losses	765	2,588
Fair Value	105,658	96,709
Corporate Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	42,723	38,245
Gross Unrealized Gains	1,799	747
Gross Unrealized Losses	394	1,728
Fair Value	44,128	37,264
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	11,743	15,324
Gross Unrealized Gains	353	157
Gross Unrealized Losses	60	224
Fair Value	12,036	15,257
Private Label Asset Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	6,658	6,029
Gross Unrealized Gains	30	24
Gross Unrealized Losses	206	380
Fair Value	6,482	5,673
US States and Political Subdivisions Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	14,837	14,654
Gross Unrealized Gains	836	869
Gross Unrealized Losses	28	47
Fair Value	15,645	15,476
US Treasury Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	21,493	17,825
Gross Unrealized Gains	719	413
Gross Unrealized Losses	49	96
Fair Value	22,163	18,142
Available-for-sale Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	97,454	92,077
Gross Unrealized Gains	3,737	2,210
Gross Unrealized Losses	737	2,475
Fair Value	100,454	91,812
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,420	2,420
Gross Unrealized Gains	2,812	2,590
Gross Unrealized Losses	28	113
Fair Value	$ 5,204	$ 4,897

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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