Note 14 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

	Year Ended December 31,
	2018			2017		2016
	(Dollars in thousands)
Current tax provision:
Federal	$	47,547		$	41,737	$	32,102
State		1,798			1,374		323
Total current		49,345			43,111		32,425
Deferred tax provision:
Federal		(2,755	)		37,398		10,960
State		6,484			7,388		5,185
Total deferred		3,729			44,786		16,145
Provision for income taxes	$	53,074		$	87,897	$	48,570

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

	Year Ended December 31,
	2018			2017			2016
	(Dollars in thousands)
Tax expense computed at federal statutory rate	$	55,409		$	80,406		$	53,123
State income tax expense, net of federal benefit		9,661			6,432			4,553
Other permanent differences		(31	)		(748	)		(647	)
Domestic manufacturing deduction		-			(5,387	)		(5,563	)
Limitation on executive compensation		2,912			-			-
Rate change effect of tax method changes		(5,661	)		-			-
Tax expense (benefit) related to an increase (decrease) in unrecognized tax benefits		4,680			75			75
Expiration of stock-based compensation		415			2,832			-
Federal energy credits		(12,446	)		-			(3,428	)
Rate changes		(78	)		10,018			-
Change in valuation allowance		(885	)		(8,978	)		253
Other		(902	)		3,247			204
Provision for income taxes	$	53,074		$	87,897		$	48,570
Effective tax (benefit) rate		20.1	%		38.3	%		32.0	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

	December 31,
	2018			2017
	(Dollars in thousands)
Deferred tax assets:
State net operating loss carryforwards	$	18,045		$	25,398
Stock-based compensation expense		11,767			10,280
Warranty, litigation and other reserves		12,844			10,763
Accrued compensation		2,622			699
Asset impairment charges		5,848			3,738
Inventory, additional costs capitalized for tax purposes		5,863			4,260
Other, net		1,680			1,887
Total deferred tax assets		58,669			57,025
Valuation allowance		(7,598	)		(8,170	)
Total deferred tax assets, net of valuation allowance		51,071			48,855
Deferred tax liabilities:
Property, equipment and other assets		8,440			3,705
Deferral of profit on home sales		1,817			-
Unrealized gain on marketable securities		375			1,290
Other, net		3,261			2,380
Total deferred tax liabilities		13,893			7,375
Net deferred tax asset	$	37,178		$	41,480

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

	Year Ended December 31,
	2018			2017			2016
	(Dollars in thousands)
Gross unrecognized tax benefits at beginning of year	$	547		$	577		$	488
Increases related to prior year tax positions		8,190			94			156
Decreases related to prior year tax positions		-			-			-
Lapse of applicable statute of limitations		(158	)		(124	)		(67	)
Gross unrecognized tax benefits at end of year	$	8,579		$	547		$	577