Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0000824142 (http://www.sec.gov/CIK)

Income Tax Disclosure [Abstract]	Period [Axis]
	2016-01-01 - 2016-12-31
Income Tax Disclosure [Abstract]
Provision for Income Taxes	The provision (benefit) for income taxes consists of the following:   Years Ending December 31,   2016   2015   2014   (in thousands) Current $ 25,790   $ 24,439   $ 26,199 Deferred 825   1,172   (2,111 ) Total $ 26,615   $ 25,611   $ 24,088
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 Ending December 31,   2016   2015   2014             Federal statutory rate 35  %   35  %   35  % State income taxes, net of federal benefit 5  %   5  %   5  % Domestic manufacturing deduction (3 )%   (3 )%   (4 )% Excess tax benefits (3 )%   —  %   —  % Other (1 )%   (1 )%   (1 )%   33  %   36  %   35  %
Deferred Tax Assets and Liabilities	The significant components of the Company’s deferred tax assets and liabilities are as follows:     December 31,   2016   2015   (in thousands) Deferred income tax assets (liabilities):     Accounts receivable and inventory reserves $ 587   $ 351 Warranty accrual 3,165   3,405 Other accruals 1,715   1,248 Share-based compensation 1,784   1,099 Donations 463   691 Other, net 738   986      Total deferred income tax assets 8,452   7,780 Property & equipment (17,983 )   (16,486 )      Total deferred income tax liabilities $ (17,983 )   $ (16,486 ) Net deferred income tax liabilities $ (9,531 )   $ (8,706 )