Balance Sheet Parenthetical (USD $)	Dec. 31, 2011	Dec. 31, 2010
Partners' Capital [Abstract]
Limited Partners, unit value (in dollars per share)	$ 1,000	$ 1,000
Limited Partners, units authorized (in shares)	24,000	24,000
Limited Partners, units issued (in shares)	24,000	24,000
Limited Partners, units outstanding (in shares)	22,663	22,674