Debt and Financing Arrangements (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014		Oct. 01, 2014	Sep. 27, 2013
Debt Instrument [Line Items]
Long-term debt	$ 256,250,000		$ 258,125,000	[1]
Financial Liabilities:
Effect of 1% in increase on borrowing rate	2,700,000
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
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
Financial Liabilities:
Interest Rate Swap Liability (Other Accrued Liabilities)	3,307,392		1,475,702
Other, Net [Member]
Debt Instrument [Line Items]
Payments of financing costs	800,000	900,000
LIBOR Rate [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.18%
Term Loan and Revolving Facility [Member]
Debt Instrument [Line Items]
Partial repayment of debt	1,900,000
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
Available borrowing capacity	25,000,000
Term Loan [Member]
Debt Instrument [Line Items]
Principal amount						150,000,000
Long-term debt	138,800,000
Annual principal repayments	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

[1] Note: The condensed consolidated balance sheet at December 31, 2014 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.