CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED BALANCE SHEETS
Long term debt, bond premium (in dollars)	$ 3,124
Series A convertible preferred units, units issued	12,897,029	11,684,074
Series A convertible preferred units, units outstanding	12,897,029	11,684,074
Common units, units issued	78,966,408	66,341,458
Common units, units outstanding	78,966,408	66,341,458