Long-Term Debt (Narrative - North America) (Details)				3 Months Ended		9 Months Ended
	Jun. 30, 2018 USD ($)	Nov. 07, 2016 USD ($)	Jun. 29, 2016 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)
Line of Credit Facility
Line of credit facility, amount outstanding					$ 128,470,000	$ 75,401,000
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company
Line of Credit Facility
Line of credit facility, maximum borrowing capacity		$ 195,000,000	$ 275,000,000
Term loan		$ 30,000,000
Leverage ratio in seventh quarter		4.25
Leverage ratio in effect for the eighth quarter and remainder of a credit agreement		3.75
EBITDA required							$ 18,500,000
EBITDA required for seventh quarter	$ 31,000,000
Fixed charge coverage ratio					1.00
Fixed charge coverage ratio after fifth quarter						1.25
Liquidity covenant				$ 25,000,000
Maximum dividends allowed		$ 1,700,000	4,000,000
Loans and advances limit		5,000,000	10,000,000
Maximum asset sales allowed		25,000,000	25,000,000
Carryover of asset sales allowed		$ 15,000,000	$ 15,000,000
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Euro-rate
Line of Credit Facility
Debt instrument, basis spread on variable rate		3.25%
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Euro-rate | Lowest Tier
Line of Credit Facility
Debt instrument, basis spread on variable rate		2.50%
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Base Rate
Line of Credit Facility
Debt instrument, basis spread on variable rate		2.25%
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Base Rate | Lowest Tier
Line of Credit Facility
Debt instrument, basis spread on variable rate		1.50%
PNC Bank, N.A., Bank of America, N.A., Wells Fargo Bank, N.A., Citizens Bank of Pennsylvania, and Branch Banking and Trust Company | Revolving Credit Facility
Line of Credit Facility
Line of credit facility, amount outstanding						$ 425,000
Line of credit facility, current borrowing capacity						$ 119,174,000