Employee Benefit Plans - Narrative (Details) (USD $)	3 Months Ended				12 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2012	Oct. 31, 2011 Western Conference of Teamsters Pension Plan [Member]	Jun. 30, 2012 Labor Management Pension Fund [Member] quarter	Sep. 30, 2013 Other Postretirement Benefit Plans, Defined Contribution [Member] plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Effect of Curtailments		$ (34,000)
Withdrawal obligation				0	4,300,000
Quarterly installment payments on estimated withdrawal liability					100,000
Number of quarters relating to installment payments on estimated withdrawal liability					80
Determination period relating to withdrawal liability					24 months
Number of non-pension multiemployer plans that the Company participates in						8
Percentage of employee contribution eligible for Company matching	50.00%
Company contribution, maximum percentage of employee's eligible income	6.00%
Plan periodic vesting percentage	20.00%
Plan, periodic vesting period	5 years
Automatic vesting age	65 years
Current employees, percent vested	100.00%
Employer match contribution amount	$ 400,000		$ 500,000