Fair Value of Financial Assets and Financial Liabilities (Fair Value of Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Long-term Debt [Member]
Liabilities and Related Instruments [Abstract]
Carrying Value, Liabilities	$ 12,372	$ 12,372
Estimated Fair Value, Liabilities	12,372	12,372
Short-term Debt [Member]
Liabilities and Related Instruments [Abstract]
Carrying Value, Liabilities	625	485
Estimated Fair Value, Liabilities	625	485
Insurance Claims [Member]
Liabilities and Related Instruments [Abstract]
Carrying Value, Liabilities	1,429	1,408
Estimated Fair Value, Liabilities	1,429	1,408
Other Long-term Investments [Member]
Assets and Related Instruments [Abstract]
Carrying Value, Assets	3,848	3,929
Estimated Fair Value, Assets	3,848	3,929
Cash Surrender Value [Member]
Assets and Related Instruments [Abstract]
Carrying Value, Assets	5,831	5,660
Estimated Fair Value, Assets	5,831	5,660
Policy Loans [Member]
Assets and Related Instruments [Abstract]
Carrying Value, Assets	1,241	1,244
Estimated Fair Value, Assets	1,241	1,244
Mortgage Loans on Real Estate [Member]
Assets and Related Instruments [Abstract]
Carrying Value, Assets	386	390
Estimated Fair Value, Assets	$ 386	$ 390