Note 8 - Accrued Expenses and Other Liabilities (Details Textual) - USD ($)		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Standard Product Warranty Accrual, Estimated Recoveries From Insurance Policies		$ 2,500,000	$ 1,900,000
Estimated Litigation Liability		5,600,000	10,900,000
Insurance Settlements Receivable	[1]	4,816,000	10,900,000
Proceeds from Insurance Settlement, Operating Activities		4,700,000
Adjustment to Warranty Insurance Receivable		1,200,000	1,400,000
Pretax Income (Loss) from Adjustments to Warranty Insurance Receivable		300,000
Home Building Segment [Member]
Standard Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties		900,000	500,000	$ 43,000
Adjustment to Warranty Insurance Receivable		1,200,000		(300,000)
Pretax Income (Loss) from Adjustments to Warranty Insurance Receivable		300,000	(500,000)
Adjustment of Warranty Accrual, Impact on Net Income (Loss)				(43,000)
Fee Building Segment [Member]
Standard Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties		(21,000)	(100,000)	30,000
Adjustment of Warranty Accrual, Impact on Net Income (Loss)		21,000	100,000	(30,000)
Increase (Decrease) in Insurance Settlements Receivable				$ 32,000
Ordinary Course Litigation [Member]
Estimated Litigation Liability			5,900,000
Increase (Decrease) in Litigation Reserve		(200,000)
Increase (Decrease) in Insurance Settlements Receivable		(200,000)
IBNR Construction Defect Claims [Member]
Estimated Litigation Liability			$ 5,000,000.0
Increase (Decrease) in Litigation Reserve		(400,000)
Increase (Decrease) in Insurance Settlements Receviable		(1,000,000.0)
Increase (Decrease) in Insurance Settlements Receivable		(1,200,000)
IBNR Construction Defect Claims [Member] | Cost of Sales [Member]
Expense Recorded Related to Additional Self-insured Retention Deductibles		$ 600,000

[1] The Company recorded insurance receivables of $10.9 million in connection with $10.9 million of litigation reserves recorded as of December 31, 2019. During 2020, $4.7 million was paid by our insurance carrier directly to claimants related to two claims, and the Company reduced its insurance receivable estimate by $0.2 million for one claim and adjusted the incurred but not reported ("IBNR") litigation reserve by $1.2 million, resulting in an insurance receivable balance of $4.8 million at December 31, 2020 with a corresponding decrease recorded within litigation reserves and $0.2 million charged to cost of sales. For more information, please refer to Note 8.