Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Provision for Income Taxes

The provision (benefit) for income taxes consists of the following:

	Years Ended December 31,
	2019		2018		2017
	(in thousands)
Current	$	7,282	$	10,530	$	21,543
Deferred	6,038		2,641		(749)
Total	$	13,320	$	13,171	$	20,794

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,
	2019		2018		2017
Federal statutory rate	21	%	21	%	35	%
State income taxes, net of federal benefit	5	%	6	%	5	%
Remeasurement of deferred taxes	—	%	—	%	(5)	%
Domestic manufacturing deduction	—	%	—	%	(3)	%
Excess tax benefits	(3)	%	(2)	%	(3)	%
Return to provision	(1)	%	—	%	—	%
Oklahoma amended tax returns	(1)	%	—	%	—	%
Other	(1)	%	(1)	%	(1)	%
	20	%	24	%	28	%

Deferred Tax Assets and Liabilities

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

	December 31,
	2019		2018
	(in thousands)
Deferred income tax assets (liabilities):
Accounts receivable and inventory reserves	$	835	$	401
Warranty accrual	3,523		3,105
Other accruals	1,919		2,445
Share-based compensation	3,906		3,264
Donations	194		80
Other, net	2,140		851
Total deferred income tax assets	12,517		10,146
Property & equipment	(27,814)		(19,405)
Total deferred income tax liabilities	$	(27,814)	$	(19,405)
Net deferred income tax liabilities	$	(15,297)	$	(9,259)