Notes Payable and Long-Term Debt (Short-Term Debt) (Details) (USD $) In Thousands, unless otherwise specified			6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Unsecured Debt [Member]
Short-term Debt [Line Items]
Line of credit with variable interest rate equal to the WSJ prime rate, subject to a 5.0% floor; Maturity January 2013. Interest payments due quarterly. Unsecured.	$ 625	$ 485
Interest rate at period end	5.00%		5.00%
Payment terms			Interest payments due quarterly