Related Party Transactions - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended			3 Months Ended				1 Months Ended	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011	Jun. 30, 2012 Regional Enterprises, Inc.	Jun. 30, 2011 Regional Enterprises, Inc.	Jun. 30, 2012 Regional Enterprises, Inc. Central Promissory Note	Jul. 26, 2007 Regional Enterprises, Inc. Central Promissory Note	Mar. 31, 2012 General Partner	Jun. 30, 2012 General Partner	Jun. 30, 2012 General Partner Maximum	Jun. 30, 2012 Related Party Demand Promissory Note	Mar. 31, 2012 Related Party Demand Promissory Note
Related Party Transaction [Line Items]
Advances from General Partner for the purpose of funding working capital	$ 10,000	$ 28,000	$ 425,000
Maximum intercompany demand note advances from General Partner to Partnership											2,000,000
Repayment term of advances together with accrued and unpaid interest										12 substantially equal quarterly installments starting with the quarter ended March 31, 2016
Interest rate on note									1.20%
Advances from General Partner				1,035,000						1,063,000
Debt instrument, face amount								2,500,000					1,208,000
Debt instrument, interest rate								10.00%					10.00%
Debt instrument, carrying amount							3,733,000					1,374,000
Advanced by Partnership to Regional		1,000,000
Termination period	30 days	30 days
Expenses paid by the Partnership recorded as allocable expense by Regional					$ 68,000	$ 214,000