Restructuring - Narrative (Details) $ in Thousands	3 Months Ended									12 Months Ended			24 Months Ended
	Mar. 31, 2019 store	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($) store	Dec. 31, 2016 USD ($)	Dec. 31, 2017 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring Expenses, Net		$ 600	$ 500	$ (900)	$ 900	$ 3,400	$ 800	$ 13,500	$ 300	$ 1,105	$ 17,994	$ 20,218
Facility Closing
Restructuring Cost and Reserve [Line Items]
Number of store closures | store											139
2016 and 2017 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring Expenses, Net											$ 17,994		$ 39,300
2016 and 2017 Restructuring Program | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Expenses, Net											0
2016 and 2017 Restructuring Program | Contractual Lease Obligations
Restructuring Cost and Reserve [Line Items]
Restructuring Expenses, Net											13,432
Subsequent Event | 2019 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Number of store closures | store	85
Aaron's Business
Restructuring Cost and Reserve [Line Items]
Restructuring Expenses, Net												20,200
Aaron's Business | 2016 and 2017 Restructuring Program
Restructuring Cost and Reserve [Line Items]
Restructuring Expenses, Net										1,105	17,523	20,218
Aaron's Business | 2016 and 2017 Restructuring Program | Facility Closing
Restructuring Cost and Reserve [Line Items]
Restructuring Expenses, Net										(377)	0	0
Aaron's Business | 2016 and 2017 Restructuring Program | Contractual Lease Obligations
Restructuring Cost and Reserve [Line Items]
Restructuring Expenses, Net										2,057	$ 13,432	$ 11,589
Minimum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		12,000								12,000
Maximum
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Cost		$ 15,000								$ 15,000