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Debt (Narrative) (United States Credit Facilities) (Details) - Subsequent Event Type [Domain]
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 23, 2013
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2016
Dec. 31, 2014
USD ($)
Dec. 02, 2014
USD ($)
Jun. 28, 2013
USD ($)
Line of Credit Facility [Line Items]                    
Credit facilities amount outstanding         $ 9,153 $ 9,153   $ 6,860    
Term Credit Facility (U.S. Facilities) [Member]                    
Line of Credit Facility [Line Items]                    
Credit facility, borrowing capacity                 $ 5,000  
Minimum fixed charge coverage ratio           1.35        
Percentage of debt to capitalization         50 50        
Percentage of subsidiary shares used to secure borrowings in facility 65.00%                  
Credit facilities amount outstanding         $ 4,900 $ 4,900        
United States Credit Facilities [Member]                    
Line of Credit Facility [Line Items]                    
Credit facilities amount outstanding         $ 14,100 $ 14,100        
United States Credit Facilities [Member] | Scenario, Plan [Member]                    
Line of Credit Facility [Line Items]                    
Minimum fixed charge coverage ratio     1.00   1.00          
United States Credit Facilities [Member] | Bank of Montreal [Member]                    
Line of Credit Facility [Line Items]                    
Credit facility, borrowing capacity                   $ 10,000
United States Credit Facilities [Member] | Prime Rate [Member]                    
Line of Credit Facility [Line Items]                    
Interest rate spread           1.00%        
United States Credit Facilities [Member] | LIBOR Eurodollar Loan [Member]                    
Line of Credit Facility [Line Items]                    
Interest rate spread           2.25%        
Term Loan Facility [Member] | Term Credit Facility (U.S. Facilities) [Member] | Prime Rate [Member]                    
Line of Credit Facility [Line Items]                    
Interest rate spread           1.25%        
Term Loan Facility [Member] | Term Credit Facility (U.S. Facilities) [Member] | LIBOR Eurodollar Loan [Member]                    
Line of Credit Facility [Line Items]                    
Interest rate spread           2.50%        
Minimum [Member] | United States Credit Facilities [Member] | Scenario, Plan [Member]                    
Line of Credit Facility [Line Items]                    
Minimum fixed charge coverage ratio   1.25   0.50            
Maximum [Member] | United States Credit Facilities [Member]                    
Line of Credit Facility [Line Items]                    
EBITDA benchmark ratio         5.00 5.00        
Maximum [Member] | United States Credit Facilities [Member] | Scenario, Plan [Member]                    
Line of Credit Facility [Line Items]                    
EBITDA benchmark ratio   3.25 4.00 7.00     2.75      
Fiscal Quarters Ending on of After December 31, 2015 [Member] | Term Credit Facility (U.S. Facilities) [Member]                    
Line of Credit Facility [Line Items]                    
EBITDA benchmark ratio         3.00 3.00        
Quarter Ends March 31, 2015 and September 30, 2015 [Member] | Term Credit Facility (U.S. Facilities) [Member]                    
Line of Credit Facility [Line Items]                    
EBITDA benchmark ratio         3.75 3.75