CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
CONDENSED CONSOLIDATED BALANCE SHEETS
Accounts receivable, allowance for doubtful accounts (in dollars)	$ 98	$ 84
Prepaid expenses and other current assets, from affiliates (in dollars)	376	605
Other long-term assets, with affiliates (in dollars)	1,272	1,315
Accounts payable, due to affiliates (in dollars)	3,151	3,220
Personnel accruals, with affiliates (in dollars)	601	1,865
Accrued expenses and other current liabilities, with affiliates (in dollars)	551	553
Other long-term liabilities, with affiliates (in dollars)	$ 239	$ 355
Common unitholders, units issued	73,065,143	73,065,143
Common unitholders, units outstanding	73,065,143	73,065,143