Description of Business and Summary of Significant Accounting Policies, Business and Recently Issued Accounting Pronouncements (Details) $ in Thousands	Dec. 31, 2019 USD ($) Showroom State	Dec. 31, 2018 USD ($)
Description of Business and Summary of Significant Accounting Policies [Abstract]
Number of showrooms | Showroom	121
Number of states | State	16
Consolidated Balance Sheet [Abstract]
Property and income, net	$ 156,534	$ 216,852
Right-of-use lease assets	175,474	0
Deferred income taxes - asset	13,198	12,544
Lease liabilities	179,005	0
Lease obligations		50,803
Other liabilities	22,959	30,539
Retained earnings	$ 295,999	282,366
ASU 2016-02 [Member]
Consolidated Balance Sheet [Abstract]
Property and income, net		163,333
Right-of-use lease assets		177,868
Deferred income taxes - asset		10,269
Lease liabilities		175,377
Lease obligations		0
Other liabilities		21,069
Retained earnings		289,190
ASU 2016-02 [Member] | Adjustments for New Standard [Member]
Consolidated Balance Sheet [Abstract]
Property and income, net		(53,519)
Right-of-use lease assets		177,868
Deferred income taxes - asset		(2,275)
Lease liabilities		175,377
Lease obligations		(50,803)
Other liabilities		(9,470)
Retained earnings		$ 6,824