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Debt and Financing Arrangements (Details) - USD ($) | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014 | Oct. 01, 2014 | Sep. 27, 2013
Debt Instrument [Line Items] |  |  |  |  |  |  |
Long-term debt | $ 254,375,000 |  | $ 254,375,000 |  | $ 258,125,000 |  |
Financial Liabilities: |  |  |  |  |  |  |
Effect of 1% in increase on borrowing rate | 1,100,000 |  | 1,100,000 |  |  |  |
Interest Rate Swap [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Amount of hedged item |  |  |  |  |  | $ 150,000,000 |
Notional amount of derivative | 150,000,000 |  | 150,000,000 |  | 150,000,000 | $ 150,000,000 |
Fixed interest rate of derivative |  |  |  |  |  | 1.89% |
Interest Rate Swap [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |  |  |  |  |
Financial assets: |  |  |  |  |  |  |
Interest Rate Swap Asset | 0 |  | 0 |  | 0 |  |
Financial Liabilities: |  |  |  |  |  |  |
Interest Rate Swap Liability (Other Accrued Liabilities) | 3,343,622 |  | 3,343,622 |  | $ 1,475,702 |  |
Other, Net [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Payments of financing costs | 800,000 | $ 900,000 | $ 1,700,000 | $ 1,700,000 |  |  |
LIBOR Rate [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate |  |  | 1.19% |  |  |  |
Term Loan and Revolving Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Partial repayment of debt | 1,900,000 |  | $ 3,800,000 |  |  |  |
Credit Agreement [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Additional principal amount available |  |  |  |  |  |  | $ 75,000,000
Revolving Facility [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  | 150,000,000
Long-term debt | 125,000,000 |  | 125,000,000 |  |  |  |
Available borrowing capacity | 25,000,000 |  | 25,000,000 |  |  |  |
Term Loan [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Principal amount |  |  |  |  |  |  | 150,000,000
Long-term debt | 136,900,000 |  | 136,900,000 |  |  |  |
Annual principal repayments | $ 7,500,000 |  | $ 7,500,000 |  |  |  |
Swing Loans [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Additional principal amount available |  |  |  |  |  |  | 20,000,000
Letters of Credit [Member] |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Additional principal amount available |  |  |  |  |  |  | $ 20,000,000

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