Long-Term Debt (Details Textual) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Dec. 31, 2015	Sep. 30, 2014	Jun. 30, 2014
Long-term Debt (Textual)
Short-term Debt	$ 9,600	$ 9,600	$ 3,000
Amortization period of underwriters fees and debt issuance costs	8 years
Number of manufacturer-affiliated finance partners	3	3
Current maturities of long-term debt and short-term financing	$ 42,993	$ 42,993	54,991
Debt, Long-term and Short-term, Combined Amount	8,300	8,300
5.00% Senior Note [Member]
Long-term Debt (Textual)
Note agreement with a third party financial institution	$ 550,000	$ 550,000	550,000	$ 200,000	$ 350,000
Debt Instrument, Interest Rate, Stated Percentage	5.00%	5.00%
Ending date of installments to be repaid	Jun. 01, 2022
Additional borrowings discount from face value	1.50%	1.50%
Long-term Debt Underwriters Fees, Discount, and Debt Issuance Costs Original	$ 13,100	$ 13,100
Unamortized Underwriters Fees, Discount, and Debt Issuance Costs	$ 10,300	$ 10,300
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	35.00%
Redemption price percentage of principal outstanding and accrued unpaid interest	105.00%	105.00%
Redemption price percentage of principal redeemed	100.00%	100.00%
Long-term Debt, Fair Value	$ 543,100	$ 543,100	545,900
5.25% Senior Note [Member]
Long-term Debt (Textual)
Note agreement with a third party financial institution	$ 300,000	$ 300,000	300,000
Debt Instrument, Interest Rate, Stated Percentage	5.25%	5.25%
Amortization period of underwriters fees and debt issuance costs	8 years
Maturity date of notes	Dec. 15, 2023
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed	35.00%
Redemption price percentage of principal outstanding and accrued unpaid interest	105.25%	105.25%
Redemption price percentage of principal redeemed	100.00%	100.00%
Long-term Debt Underwriters Fees and Debt Issuance Costs Original	$ 5,000	$ 5,000
Unamortized Underwriters Fees and Debt Issuance Costs	4,700	4,700
Long-term Debt, Fair Value	296,300	296,300	297,800
Real Estate Related and Other Long Term Debt [Member]
Long-term Debt (Textual)
Long-term Debt, Percentage Bearing Fixed Interest, Amount	97,300	97,300	100,700
Long-term Debt, Percentage Bearing Fixed Interest, Fair Value	98,500	98,500	$ 102,400
Real Estate Related Debt [Member]
Long-term Debt (Textual)
Note agreement with a third party financial institution	$ 351,100	351,100
Interest on real estate notes, minimum	3.00%
Interest on real estate notes, maximum	4.69%
Debt Issuance Cost	$ 2,700
Unamortized debt issuance cost	$ 700	700
Number of loans as per loan agreements	54
Total borrowings	$ 318,800	318,800
Current maturities of long-term debt and short-term financing	$ 23,600	23,600
Proceeds from Issuance of Long-term Debt		30,300
Repayments of Long-term Debt		7,700
Real Estate Related Debt [Member] | Minimum [Member]
Long-term Debt (Textual)
Maturity date of notes	May 01, 2017
Variable Interest Rate	1.50%
Amortization schedule	15 years
Real Estate Related Debt [Member] | Maximum [Member]
Long-term Debt (Textual)
Maturity date of notes	Dec. 01, 2024
Variable Interest Rate	2.50%
Amortization schedule	20 years
Brazil Note [Member]
Long-term Debt (Textual)
Maturity date of notes	Apr. 01, 2025
Total borrowings	$ 4,100	4,100
Current maturities of long-term debt and short-term financing	400	400
Proceeds from Issuance of Long-term Debt		0
Repayments of Long-term Debt		100
Brazilian third party financial institution [Member]
Long-term Debt (Textual)
Short-term Debt	$ 6,800	6,800
Ending date of installments to be repaid	Feb. 01, 2017
Proceeds from Issuance of Long-term Debt		0
U.K. Note [Member]
Long-term Debt (Textual)
Maturity date of notes	Sep. 01, 2034
Number of loans as per loan agreements	0
Total borrowings	$ 57,100	57,100
Current maturities of long-term debt and short-term financing	$ 4,700	4,700
Proceeds from Issuance of Long-term Debt		0
Repayments of Long-term Debt		$ 2,400