Rental Merchandise Rental Merchandise (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Rental Merchandise [Abstract]
On rent cost	$ 1,110,968	$ 1,176,240
On rent accumulated depreciation	(427,160)	(474,437)
On rent	683,808	701,803	$ 795,118
Held for rent cost	147,300	198,471
Held for rent accumulated depreciation	(23,638)	(31,283)
Held for rent	$ 123,662	$ 167,188	$ 206,836