Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Provision for Income Taxes

The provision for income taxes consists of the following:

	Years Ended December 31,
	2020		2019		2018
	(in thousands)
Current	$	9,939	$	7,282	$	10,530
Deferred	13,027		6,038		2,641
Total	$	22,966	$	13,320	$	13,171

Federal Statutory Income Tax Rate Reconciliation

The reconciliation of the federal statutory income tax rate to the effective income tax rate is as follows: 

	Years Ended December 31,
	2020		2019		2018
Federal statutory rate	21.0	%	21.0	%	21.0	%
State income taxes, net of federal benefit	5.3	%	5.2	%	6.0	%
Excess tax benefits	(3.2)	%	(2.6)	%	(2.0)	%
Return to provision	0.1	%	(1.4)	%	—	%
Oklahoma amended tax returns	—	%	(1.3)	%	—	%
Other	(0.7)	%	(0.9)	%	(1.0)	%
	22.5	%	20.0	%	24.0	%

Deferred Tax Assets and Liabilities

The significant components of the Company’s deferred tax assets and liabilities are as follows:

	December 31,
	2020		2019
	(in thousands)
Deferred income tax assets (liabilities):
Accounts receivable and inventory reserves	$	1,052	$	835
Warranty accrual	3,776		3,523
Other accruals	747		1,919
Share-based compensation	4,102		3,906
Donations	297		194
Other, net	2,457		2,140
Total deferred income tax assets	12,431		12,517
Property & equipment	(40,755)		(27,814)
Total deferred income tax liabilities	$	(40,755)	$	(27,814)
Net deferred income tax liabilities	$	(28,324)	$	(15,297)