Employee Benefit Plans (Details Textual) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Description Of Employee Participation In Employee Benefit Plans	Employee participation in this plan is voluntary and the LLC matches 50% of eligible employee contributions, up to an amount equal to 3% of employee compensation, on a biweekly basis.
Defined Benefit Plan, Contributions by Plan Participants	$ 50,000	$ 32,000	$ 192,000	$ 163,000