Long-Term Debt (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Long-term debt
Total debt	$ 22,926	$ 24,185
Less current maturities	1,000	1,000
Long-term debt	21,926	23,185
Revolving bank credit facility [Member]
Long-term debt
Total debt	1,946	1,955
Promissory note payable to affiliate [Member]
Long-term debt
Total debt	$ 20,980	$ 22,230