Represents the amount of additional financing costs.

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Represents the excess cash flow used to prepay the debt.

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Represents the percentage of excess cash flow used to prepay the debt.

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The variable rate percentage (such as LIBOR) that serves as the reference rate for the debt instrument.

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Represents the amount of premium paid on repayment of debt.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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No definition available.

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The effective interest rate at the end of the reporting period.

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Amount of the required periodic payments applied to principal.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

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No definition available.

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For an unclassified balance sheet, the amount as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. Such amount is before the consideration of accumulated amortization.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount borrowed under the credit facility as of the balance sheet date.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the remainder of the fiscal year following the latest fiscal year ended.

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No definition available.

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Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Long-Term Debt (Details) (USD $)	9 Months Ended			1 Months Ended		3 Months Ended	9 Months Ended		9 Months Ended				1 Months Ended	3 Months Ended				9 Months Ended
Long-Term Debt (Details) (USD $)	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Jun. 30, 2013 Term loan	Mar. 31, 2013 Term loan	Mar. 31, 2012 Term loan	Sep. 30, 2013 Term loan	Dec. 31, 2012 Term loan	Sep. 30, 2013 Term loan Minimum	Sep. 30, 2013 Term loan Maximum	Sep. 30, 2013 Term loan Prime rate	Sep. 30, 2013 Term loan Eurocurrency rate	Jun. 30, 2013 Term loan repaid	Mar. 31, 2012 Term loan repaid	Sep. 30, 2013 Term loan repaid Eurocurrency rate Minimum	Sep. 30, 2013 Revolving credit facility	Sep. 30, 2012 Revolving credit facility	Sep. 30, 2013 Revolving credit facility Prime rate Minimum	Sep. 30, 2013 Revolving credit facility Prime rate Maximum	Sep. 30, 2013 Revolving credit facility Eurocurrency rate Minimum	Sep. 30, 2013 Revolving credit facility Eurocurrency rate Maximum
Long-term debt
Long-term debt	$ 295,248,000		$ 295,410,000				$ 299,888,000	$ 299,250,000
Interest Rate (as a percent)							5.00%					5.00%
Original issue discount	(4,640,000)		(3,840,000)
Current	3,000,000		3,000,000
Noncurrent	292,248,000		292,410,000
Variable rate basis											prime rate	one, two, three or six months Eurocurrency rate						prime rate	prime rate	Eurocurrency rate for one, two, three or six month periods	Eurocurrency rate for one, two, three or six month periods
Margin (as a percent)											3.00%	4.00%						3.00%	6.00%	4.00%	5.50%
Variable interest rate floor (as a percent)															1.00%
Quarterly principal payments							800,000
Percentage of excess cash flow used to prepay the debt									25.00%	50.00%
Excess cash flow used to prepay the debt					2,100,000
Premium paid on repayment of debt													3,000,000	6,000,000
Underwriting fees and legal costs				3,400,000		4,100,000
Deferment of financing costs	2,700,000
Loss on early extinguishment of debt	3,660,000	5,112,000
Capitalized premium on the repayment of debt and refinancing fees		5,000,000
Available balance under the facility																30,000,000
Amounts drawn under the facility																0	0
Maturities
2013 (remainder of year)	750,000
2014	3,000,000
2015	3,000,000
2016	3,000,000
2017	3,000,000
Thereafter	287,138,000
Total	$ 299,888,000