Receivables Installment Receivables by Class (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Installment Receivables	$ 8,919	$ 6,488
Unpaid Principal Balance	8,858	6,417
Related Allowance for Doubtful Accounts	6,039	3,823
Interest Income Recognized	101	120
CANADA
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Installment Receivables	1,455	1,980
Unpaid Principal Balance	1,394	1,909
Related Allowance for Doubtful Accounts	88	458
Interest Income Recognized	101	120
Impaired Installment Receivables with Related Allowance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Installment Receivables	7,552	4,966
Unpaid Principal Balance	7,552	4,966
Related Allowance for Doubtful Accounts	6,039	3,823
Interest Income Recognized	0	0
Impaired Installment Receivables with Related Allowance [Member] | U.S.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Installment Receivables	7,464	4,508
Unpaid Principal Balance	7,464	4,508
Related Allowance for Doubtful Accounts	5,951	3,365
Interest Income Recognized	0	0
Impaired Installment Receivables with Related Allowance [Member] | CANADA
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Installment Receivables	88	458
Unpaid Principal Balance	88	458
Related Allowance for Doubtful Accounts	88	458
Interest Income Recognized	0	0
Installment Receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Installment Receivables	1,367	1,522
Unpaid Principal Balance	1,306	1,451
Related Allowance for Doubtful Accounts	0	0
Interest Income Recognized	101	120
Installment Receivables [Member] | CANADA
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Installment Receivables	1,367	1,522
Unpaid Principal Balance	1,306	1,451
Related Allowance for Doubtful Accounts	0	0
Interest Income Recognized	$ 101	$ 120