Revolving Credit Agreement (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended			1 Months Ended					9 Months Ended		9 Months Ended	3 Months Ended			3 Months Ended					3 Months Ended
	Sep. 30, 2013	Sep. 30, 2013	Sep. 12, 2013	Dec. 20, 2012	Sep. 30, 2012 Second amended credit agreement [Member]	Sep. 27, 2012 Third amended credit agreement [Member]	Nov. 07, 2013 Subsequent Event [Member]	Oct. 09, 2013 Subsequent Event [Member]	Aug. 07, 2013 Subsequent Event [Member]	Sep. 30, 2013 Base rate loan [Member]	Sep. 30, 2013 LIBOR rate [Member]	Sep. 30, 2013 Eurodollar Loan [Member]	Sep. 30, 2013 Minimum [Member]	Jun. 04, 2013 Minimum [Member]	Sep. 28, 2012 Minimum [Member]	Sep. 30, 2013 Minimum [Member] Base rate loan [Member]	Sep. 30, 2013 Minimum [Member] Eurodollar Loan [Member]	Sep. 30, 2013 Maximum [Member]	Jun. 04, 2013 Maximum [Member]	Dec. 20, 2012 Maximum [Member]	Sep. 30, 2013 Maximum [Member] Base rate loan [Member]	Sep. 30, 2013 Maximum [Member] Eurodollar Loan [Member]
Revolving Credit Agreement (Textual) [Abstract]
Company amended and restated its senior secured revolving credit agreement					2012-09-28
Senior secured revolving credit maximum facility						$ 400.0			$ 350.0
Borrowing base									275.0					255.0	500.0				280.0	215.0
Conforming borrowing base				220.0
Covenant, additional indebtedness									10.0
Borrowed under credit agreement	145.0	145.0					160.0
Additional borrowings for working capital requirements								15.0
Outstanding letters of credit	0.3	0.3					0.3
Borrowings interest rate											1.00%
Additional interest rate																0.0075	0.0175				0.03	0.04
Credit facility fee													0.375%					0.50%
Borrowings interest rate description										If the Company borrows funds as a base rate loan, such borrowings will bear interest at a rate equal to the higher of (i) the prime rate for such day or (ii) the Federal Funds Effective Rate on such day, plus 0.50% or (iii) the daily adjusting LIBOR rate plus 1.0% plus, in each case, an amount from 0.75% to 3.00% of such outstanding loan depending on the level of borrowings under the agreement.		If the Company borrows funds as a Eurodollar loan, such borrowings will bear interest at a rate equal to (i) the quotient obtained by dividing (A) the LIBOR rate by (B) a percentage equal to 100% minus the maximum rate during such interest calculation period at which RBC is required to maintain reserves on Eurocurrency Liabilities (as defined in Regulation D of the Board of Governors of the Federal Reserve System) plus (ii) an amount from 1.75% to 4.00% of such outstanding loan depending on the level of borrowings under the Credit Agreement.
Revolving Credit Agreement (Additional Textual) [Abstract]
Credit Agreement, maturity date		Dec. 29, 2016
The borrowing base under the Credit Agreement determined		semi-annually
Repay deficit in agreement Period	6 months
Additional deferred loan cost	1.1	1.1
Deferred loan costs	2.3	2.3
Outstanding borrowings bore interest effective rate	4.00%	4.00%
Federal Funds Effective Plus Rate	0.50%
Percentage of reserves required to maintain	100.00%
Current ratio	1.0
Total debt outstanding to EBITDA	4.0
Line of Credit Facility, Decrease, Repayments			$ 130.0