Debt and Financing Arrangements (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Oct. 01, 2014	Sep. 27, 2013
Debt Instrument [Line Items]
Long-term debt	$ 227,500,000		$ 227,500,000		$ 258,125,000
Financial Liabilities:
Effect of 1% in increase on borrowing rate	800,000		800,000
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)	4,619,278		4,619,278		$ 1,475,702
Other, Net [Member]
Debt Instrument [Line Items]
Payments of financing costs	1,300,000	$ 900,000	$ 3,000,000	$ 2,700,000
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	26,900,000		$ 30,600,000
Revolving Facility [Member]
Debt Instrument [Line Items]
Partial repayment of debt	25,000,000
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	100,800,000		100,800,000
Available borrowing capacity	49,200,000		49,200,000
Term Loan [Member]
Debt Instrument [Line Items]
Principal amount							150,000,000
Long-term debt	135,000,000		135,000,000
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