Accrued Acquisition Liability (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended
	Aug. 31, 2020	May 31, 2021	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Business Acquisition [Line Items]
Implied interest rate	1.80%
Accrued acquisition liability			$ 32,871		$ 32,673
Interest expense			323	$ 115
Partsmaster
Business Acquisition [Line Items]
Payments for purchase	$ 2,300
Accrued acquisition liability			32,900		$ 32,700
Interest expense			$ 200
Forecast | Partsmaster
Business Acquisition [Line Items]
Payments for purchase		$ 33,000