Long-term Debt Credit Agreement (Details)	12 Months Ended							12 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended		3 Months Ended				3 Months Ended		12 Months Ended				1 Months Ended									12 Months Ended								3 Months Ended	9 Months Ended	3 Months Ended					9 Months Ended
	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Jan. 02, 2013 Minimum [Member]	Jan. 02, 2013 Maximum [Member]	Dec. 31, 2013 Revolving Credit Facility [Member] USD ($)	Oct. 02, 2012 Revolving Credit Facility [Member] USD ($)	Dec. 31, 2012 Revolving Credit Facility [Member] Base Rate [Member]	Dec. 31, 2012 Revolving Credit Facility [Member] LIBOR and BBSW Interest Rates [Member]	Mar. 27, 2013 Revolving Credit Facility [Member] Minimum [Member] Base Rate [Member]	Dec. 31, 2013 Revolving Credit Facility [Member] Minimum [Member] Base Rate [Member]	Mar. 27, 2013 Revolving Credit Facility [Member] Minimum [Member] LIBOR and BBSW Interest Rates [Member]	Dec. 31, 2013 Revolving Credit Facility [Member] Minimum [Member] LIBOR and BBSW Interest Rates [Member]	Mar. 27, 2013 Revolving Credit Facility [Member] Maximum [Member] Base Rate [Member]	Dec. 31, 2013 Revolving Credit Facility [Member] Maximum [Member] Base Rate [Member]	Mar. 27, 2013 Revolving Credit Facility [Member] Maximum [Member] LIBOR and BBSW Interest Rates [Member]	Dec. 31, 2013 Revolving Credit Facility [Member] Maximum [Member] LIBOR and BBSW Interest Rates [Member]	Dec. 31, 2012 United States Term Loan [Member] USD ($)	Dec. 31, 2013 United States Term Loan [Member] USD ($)	Oct. 02, 2012 United States Term Loan [Member] USD ($)	Dec. 31, 2012 Canadian term loan [Member] USD ($)	Dec. 31, 2012 Canadian term loan [Member] CAD	Oct. 02, 2012 Canadian term loan [Member] USD ($)	Oct. 02, 2012 Canadian term loan [Member] CAD	Dec. 31, 2012 Australian Term Loan [Member] USD ($)	Dec. 31, 2012 Australian Term Loan [Member] AUD	Dec. 31, 2013 Australian Term Loan [Member] USD ($)	Dec. 31, 2013 Australian Term Loan [Member] AUD	Oct. 02, 2012 Australian Term Loan [Member] USD ($)	Oct. 02, 2012 Australian Term Loan [Member] AUD	Oct. 31, 2012 Total Credit Facility [Member]	Dec. 31, 2013 United States Revolver [Member] USD ($)	Dec. 31, 2013 European revolver [Member] USD ($)	Dec. 31, 2013 European revolver [Member] EUR (€)	Dec. 31, 2013 Letter of Credit [Member] USD ($)	Dec. 31, 2013 Swingline U.S. [Member] USD ($)	Dec. 31, 2013 Swingline Canada [Member] USD ($)	Dec. 31, 2012 Swingline Australia [Member] USD ($)	Dec. 31, 2013 Swingline Europe [Member] USD ($)	Dec. 31, 2013 Prior Credit Agreement [Member]	Dec. 31, 2012 Prior Credit Agreement [Member] USD ($)	Jul. 29, 2011 Prior Credit Agreement [Member] USD ($)	Jul. 29, 2011 Prior United States Term Loan [Member] USD ($)	Jul. 29, 2011 Prior Australian Term Loan [Member] USD ($)	Jul. 29, 2011 Prior Australian Term Loan [Member] AUD	Jul. 29, 2011 Prior Canadian Term Loan [Member] USD ($)	Jul. 29, 2011 Prior Canadian Term Loan [Member] CAD	Dec. 31, 2012 Prepayment [Member] United States Term Loan [Member] USD ($)	Sep. 30, 2013 Prepayment [Member] United States Term Loan [Member] USD ($)	Mar. 31, 2013 Prepayment [Member] Canadian term loan [Member] CAD	Dec. 31, 2012 Prepayment [Member] Canadian term loan [Member] USD ($)	Dec. 31, 2012 Prepayment [Member] Canadian term loan [Member] CAD	Dec. 31, 2012 Prepayment [Member] Australian Term Loan [Member] USD ($)	Dec. 31, 2012 Prepayment [Member] Australian Term Loan [Member] AUD	Sep. 30, 2013 Prepayment [Member] Australian Term Loan [Member] USD ($)	Sep. 30, 2013 Prepayment [Member] Australian Term Loan [Member] AUD
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity						$ 425,000,000	$ 425,000,000													$ 1,600,000,000															$ 45,000,000	$ 30,000,000	$ 15,000,000	$ 15,000,000	$ 10,000,000			$ 750,000,000	$ 200,000,000	$ 100,000,000	92,200,000	$ 25,000,000	23,600,000
Line of credit facility, amount outstanding						15,900,000																	25,000,000	24,600,000					210,000,000	202,900,000		11,000,000	4,900,000	3,600,000
Debt instrument, maturity date																															Oct. 01, 2017									Jul. 29, 2016
Debt Instrument, basis spread on variable rate								1.50%	2.50%	0.50%	0.25%	1.50%	1.25%	1.75%	1.50%	2.75%	2.50%
Repayments of Long-term Debt																																																47,500,000	79,000,000		10,000,000	10,000,000	18,600,000	18,000,000
Scheduled repayments of debt																		16,400,000	63,700,000		200,000	200,000			2,100,000	2,000,000	7,700,000	8,100,000																						14,342,000					23,600,000	24,000,000
Write off of deferred financing fees	500,000	3,200,000	500,000																																						2,900,000
Long-term Debt, Gross	1,624,712,000	1,858,135,000																										150,800,000
Debt instrument, interest rate, stated percentage																			1.92%								4.40%	4.40%				1.92%	1.97%	1.97%
Line Of Credit, Unused Borrowing Capacity, Commitment Fee Rate		0.50%		0.25%	0.50%
Letters of Credit Outstanding, Amount						3,100,000
Debt Instrument, Unused Borrowing Capacity, Amount						406,000,000
penalties on early repayment of debt [Line Items]																																									0
Legal Fees																																									$ 500,000