Fair Value of Financial Instruments (Financial Instruments Measured at Fiar Value) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	$ 2,974,983	$ 2,856,699
Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	2,800,624	2,697,248
U.S. Treasury [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	43,504	43,951
U.S. Government Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	40,212	96,395
States, Municipalities and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	757,614	748,107
Foreign Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	235,634	214,815
Public Utilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	256,959	270,071
Corporate Bonds [Member] | Energy [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	186,548	197,192
Corporate Bonds [Member] | Industrial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	319,785	295,677
Corporate Bonds [Member] | Consumer Goods and Service [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	218,604	212,174
Corporate Bonds [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	127,623	115,671
Corporate Bonds [Member] | Technology, Media and Telecommunications [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	129,331	112,948
Corporate Bonds [Member] | Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	308,110	265,301
Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	34,992	35,390
Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	135,858	82,851
Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	5,469	6,296
Redeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	381	409
Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	174,359	159,451
Common Stocks [Member] | Public Utilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	15,011	14,735
Common Stocks [Member] | Energy [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	11,773	12,210
Common Stocks [Member] | Industrial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	30,998	28,556
Common Stocks [Member] | Consumer Goods and Service [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	17,961	18,564
Common Stocks [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	18,043	15,988
Common Stocks [Member] | Technology, Media and Telecommunications [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	11,055	10,018
Common Stocks [Member] | Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	65,906	56,090
Nonredeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	3,612	3,290
Recurring [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	2,974,983	2,856,699
Trading Securities	14,249	13,454
Short- Term Investments	1,100	1,100
Money Market Accounts	38,414	62,899
Total Assets Measured at Fair Value	3,028,746	2,934,152
Recurring [Member] | Fair Value [Member] | Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	2,800,624	2,697,248
Recurring [Member] | Fair Value [Member] | U.S. Treasury [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	43,504	43,951
Recurring [Member] | Fair Value [Member] | U.S. Government Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	40,212	96,395
Recurring [Member] | Fair Value [Member] | States, Municipalities and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	757,614	748,107
Recurring [Member] | Fair Value [Member] | Foreign Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	235,634	214,815
Trading Securities	2,801	2,906
Recurring [Member] | Fair Value [Member] | Public Utilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	256,959	270,071
Recurring [Member] | Fair Value [Member] | Corporate Bonds [Member] | Energy [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	186,548	197,192
Recurring [Member] | Fair Value [Member] | Corporate Bonds [Member] | Industrial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	319,785	295,677
Trading Securities	1,327	1,443
Recurring [Member] | Fair Value [Member] | Corporate Bonds [Member] | Consumer Goods and Service [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	218,604	212,174
Trading Securities	1,563	1,059
Recurring [Member] | Fair Value [Member] | Corporate Bonds [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	127,623	115,671
Trading Securities	1,814	1,450
Recurring [Member] | Fair Value [Member] | Corporate Bonds [Member] | Technology, Media and Telecommunications [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	129,331	112,948
Trading Securities	2,387	1,458
Recurring [Member] | Fair Value [Member] | Corporate Bonds [Member] | Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	308,110	265,301
Trading Securities	2,265	2,063
Recurring [Member] | Fair Value [Member] | Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	34,992	35,390
Recurring [Member] | Fair Value [Member] | Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	135,858	82,851
Recurring [Member] | Fair Value [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	5,469	6,296
Recurring [Member] | Fair Value [Member] | Redeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	381	409
Trading Securities	2,092	3,075
Recurring [Member] | Fair Value [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	174,359	159,451
Recurring [Member] | Fair Value [Member] | Common Stocks [Member] | Public Utilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	15,011	14,735
Recurring [Member] | Fair Value [Member] | Common Stocks [Member] | Energy [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	11,773	12,210
Recurring [Member] | Fair Value [Member] | Common Stocks [Member] | Industrial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	30,998	28,556
Recurring [Member] | Fair Value [Member] | Common Stocks [Member] | Consumer Goods and Service [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	17,961	18,564
Recurring [Member] | Fair Value [Member] | Common Stocks [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	18,043	15,988
Recurring [Member] | Fair Value [Member] | Common Stocks [Member] | Technology, Media and Telecommunications [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	11,055	10,018
Recurring [Member] | Fair Value [Member] | Common Stocks [Member] | Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	65,906	56,090
Recurring [Member] | Fair Value [Member] | Nonredeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	3,612	3,290
Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	170,770	156,076
Trading Securities	2,092	1,659
Short- Term Investments	1,100	1,100
Money Market Accounts	38,414	62,899
Total Assets Measured at Fair Value	212,376	221,734
Recurring [Member] | Level 1 [Member] | Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	381	409
Recurring [Member] | Level 1 [Member] | U.S. Treasury [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 1 [Member] | U.S. Government Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 1 [Member] | States, Municipalities and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 1 [Member] | Foreign Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Trading Securities	0	0
Recurring [Member] | Level 1 [Member] | Public Utilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 1 [Member] | Corporate Bonds [Member] | Energy [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 1 [Member] | Corporate Bonds [Member] | Industrial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Trading Securities	0	0
Recurring [Member] | Level 1 [Member] | Corporate Bonds [Member] | Consumer Goods and Service [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Trading Securities	0	0
Recurring [Member] | Level 1 [Member] | Corporate Bonds [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Trading Securities	0	0
Recurring [Member] | Level 1 [Member] | Corporate Bonds [Member] | Technology, Media and Telecommunications [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Trading Securities	0	0
Recurring [Member] | Level 1 [Member] | Corporate Bonds [Member] | Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Trading Securities	0	0
Recurring [Member] | Level 1 [Member] | Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 1 [Member] | Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 1 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 1 [Member] | Redeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	381	409
Trading Securities	2,092	1,659
Recurring [Member] | Level 1 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	170,389	155,667
Recurring [Member] | Level 1 [Member] | Common Stocks [Member] | Public Utilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	15,011	14,735
Recurring [Member] | Level 1 [Member] | Common Stocks [Member] | Energy [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	11,773	12,210
Recurring [Member] | Level 1 [Member] | Common Stocks [Member] | Industrial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	30,923	28,556
Recurring [Member] | Level 1 [Member] | Common Stocks [Member] | Consumer Goods and Service [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	17,961	18,564
Recurring [Member] | Level 1 [Member] | Common Stocks [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	18,043	15,988
Recurring [Member] | Level 1 [Member] | Common Stocks [Member] | Technology, Media and Telecommunications [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	11,055	10,018
Recurring [Member] | Level 1 [Member] | Common Stocks [Member] | Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	62,251	52,564
Recurring [Member] | Level 1 [Member] | Nonredeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	3,372	3,032
Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	2,782,093	2,674,781
Trading Securities	12,157	11,795
Short- Term Investments	0	0
Money Market Accounts	0	0
Total Assets Measured at Fair Value	2,794,250	2,686,576
Recurring [Member] | Level 2 [Member] | Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	2,781,778	2,674,523
Recurring [Member] | Level 2 [Member] | U.S. Treasury [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	43,504	43,951
Recurring [Member] | Level 2 [Member] | U.S. Government Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	40,212	96,395
Recurring [Member] | Level 2 [Member] | States, Municipalities and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	756,799	747,227
Recurring [Member] | Level 2 [Member] | Foreign Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	234,798	213,979
Trading Securities	2,801	2,906
Recurring [Member] | Level 2 [Member] | Public Utilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	256,959	270,071
Recurring [Member] | Level 2 [Member] | Corporate Bonds [Member] | Energy [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	186,548	197,192
Recurring [Member] | Level 2 [Member] | Corporate Bonds [Member] | Industrial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	316,887	292,780
Trading Securities	1,327	1,443
Recurring [Member] | Level 2 [Member] | Corporate Bonds [Member] | Consumer Goods and Service [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	217,225	210,759
Trading Securities	1,563	1,059
Recurring [Member] | Level 2 [Member] | Corporate Bonds [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	127,623	115,671
Trading Securities	1,814	1,450
Recurring [Member] | Level 2 [Member] | Corporate Bonds [Member] | Technology, Media and Telecommunications [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	129,331	112,948
Trading Securities	2,387	1,458
Recurring [Member] | Level 2 [Member] | Corporate Bonds [Member] | Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	295,888	249,328
Trading Securities	2,265	2,063
Recurring [Member] | Level 2 [Member] | Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	34,992	35,390
Recurring [Member] | Level 2 [Member] | Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	135,858	82,851
Recurring [Member] | Level 2 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	5,154	5,981
Recurring [Member] | Level 2 [Member] | Redeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Trading Securities	0	1,416
Recurring [Member] | Level 2 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	315	258
Recurring [Member] | Level 2 [Member] | Common Stocks [Member] | Public Utilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 2 [Member] | Common Stocks [Member] | Energy [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 2 [Member] | Common Stocks [Member] | Industrial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	75	0
Recurring [Member] | Level 2 [Member] | Common Stocks [Member] | Consumer Goods and Service [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 2 [Member] | Common Stocks [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 2 [Member] | Common Stocks [Member] | Technology, Media and Telecommunications [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 2 [Member] | Common Stocks [Member] | Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 2 [Member] | Nonredeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	240	258
Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	22,120	25,842
Trading Securities	0	0
Short- Term Investments	0	0
Money Market Accounts	0	0
Total Assets Measured at Fair Value	22,120	25,842
Recurring [Member] | Level 3 [Member] | Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	18,465	22,316
Recurring [Member] | Level 3 [Member] | U.S. Treasury [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 3 [Member] | U.S. Government Agency [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 3 [Member] | States, Municipalities and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	815	880
Recurring [Member] | Level 3 [Member] | Foreign Bonds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	836	836
Trading Securities	0	0
Recurring [Member] | Level 3 [Member] | Public Utilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 3 [Member] | Corporate Bonds [Member] | Energy [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 3 [Member] | Corporate Bonds [Member] | Industrial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	2,898	2,897
Trading Securities	0	0
Recurring [Member] | Level 3 [Member] | Corporate Bonds [Member] | Consumer Goods and Service [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	1,379	1,415
Trading Securities	0	0
Recurring [Member] | Level 3 [Member] | Corporate Bonds [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Trading Securities	0	0
Recurring [Member] | Level 3 [Member] | Corporate Bonds [Member] | Technology, Media and Telecommunications [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Trading Securities	0	0
Recurring [Member] | Level 3 [Member] | Corporate Bonds [Member] | Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	12,222	15,973
Trading Securities	0	0
Recurring [Member] | Level 3 [Member] | Mortgage Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 3 [Member] | Collateralized Mortgage Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 3 [Member] | Asset-Backed Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	315	315
Recurring [Member] | Level 3 [Member] | Redeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Trading Securities	0	0
Recurring [Member] | Level 3 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	3,655	3,526
Recurring [Member] | Level 3 [Member] | Common Stocks [Member] | Public Utilities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 3 [Member] | Common Stocks [Member] | Energy [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 3 [Member] | Common Stocks [Member] | Industrial [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 3 [Member] | Common Stocks [Member] | Consumer Goods and Service [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 3 [Member] | Common Stocks [Member] | Health Care [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 3 [Member] | Common Stocks [Member] | Technology, Media and Telecommunications [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	0	0
Recurring [Member] | Level 3 [Member] | Common Stocks [Member] | Financial Services [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	3,655	3,526
Recurring [Member] | Level 3 [Member] | Nonredeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-For-Sale Securities	$ 0	$ 0