Note 18 - Supplemental Guarantor Information - Supplemental Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net cash provided by (used in) operating activities	$ 121,258	$ (139,685)	$ (90,863)
Purchases of property and equipment	(41)	(246)	(195)
Contributions and advances to unconsolidated joint ventures	(8,826)	(15,066)	(27,479)
Contributions to subsidiaries from corporate	0	0	0
Distributions of capital from subsidiaries to corporate	0	0	0
Distributions of capital and repayment of advances from unconsolidated joint ventures	9,133	15,436	15,577
Net cash provided by investing activities	266	302	(10,550)
Borrowings from credit facility	50,000	150,000	88,000
Repayments of credit facility	(117,500)	(82,500)	(206,000)
Repurchases of senior notes	(15,605)	0	0
Contributions to subsidiaries from corporate	0	0	0
Distributions to corporate from subsidiaries	0	0	0
Repurchases of common stock	(1,042)	(8,563)	0
Tax withholding paid on behalf of employees for stock awards	(488)	(982)	(590)
Net cash used in financing activities	(84,635)	57,955	194,302
Net increase (decrease) in cash, cash equivalents and restricted cash	36,889	(81,428)	92,889
Cash, cash equivalents and restricted cash – beginning of year	42,542	123,970	31,081
Cash, cash equivalents and restricted cash – end of year	79,431	42,542	123,970
Interest collected on advances to unconsolidated joint ventures		178	552
Cash assumed from joint venture at consolidation	0	0	995
Proceeds from senior notes	0	0	324,465
Repayments of other notes payable	0	0	(4,110)
Payment of debt issuance costs	0	0	(7,565)
Proceeds from exercise of stock options	0	0	102
Consolidation, Eliminations [Member]
Net cash provided by (used in) operating activities	(1,152)	(4,779)	(17,058)
Purchases of property and equipment	0	0	0
Contributions and advances to unconsolidated joint ventures	0	0	0
Contributions to subsidiaries from corporate	98,620	249,435	275,794
Distributions of capital from subsidiaries to corporate	(287,523)	(183,896)	(192,478)
Distributions of capital and repayment of advances from unconsolidated joint ventures	0	0	0
Net cash provided by investing activities	(188,903)	65,539	83,316
Borrowings from credit facility	0	0	0
Repayments of credit facility	0	0	0
Repurchases of senior notes	0
Contributions to subsidiaries from corporate	(98,620)	(249,435)	(275,794)
Distributions to corporate from subsidiaries	288,675	188,675	209,536
Repurchases of common stock	0	0
Tax withholding paid on behalf of employees for stock awards	0	0	0
Net cash used in financing activities	190,055	(60,760)	(66,258)
Net increase (decrease) in cash, cash equivalents and restricted cash	0	0	0
Cash, cash equivalents and restricted cash – beginning of year	0	0	0
Cash, cash equivalents and restricted cash – end of year	0	0	0
Interest collected on advances to unconsolidated joint ventures		0	0
Cash assumed from joint venture at consolidation			0
Proceeds from senior notes			0
Repayments of other notes payable			0
Payment of debt issuance costs			0
Proceeds from exercise of stock options			0
Parent Company [Member]
Net cash provided by (used in) operating activities	(66,965)	(63,076)	(31,824)
Purchases of property and equipment	(14)	(49)	(71)
Contributions and advances to unconsolidated joint ventures	0	0	0
Contributions to subsidiaries from corporate	(98,620)	(249,435)	(275,794)
Distributions of capital from subsidiaries to corporate	287,523	183,896	192,478
Distributions of capital and repayment of advances from unconsolidated joint ventures	0	0	0
Net cash provided by investing activities	188,889	(65,588)	(83,387)
Borrowings from credit facility	50,000	150,000	88,000
Repayments of credit facility	(117,500)	(82,500)	(206,000)
Repurchases of senior notes	(15,605)
Contributions to subsidiaries from corporate	0	0	0
Distributions to corporate from subsidiaries	0	0	0
Repurchases of common stock	(1,042)	(8,563)
Tax withholding paid on behalf of employees for stock awards	(488)	(982)	(590)
Net cash used in financing activities	(84,635)	57,955	198,412
Net increase (decrease) in cash, cash equivalents and restricted cash	37,289	(70,709)	83,201
Cash, cash equivalents and restricted cash – beginning of year	28,877	99,586	16,385
Cash, cash equivalents and restricted cash – end of year	66,166	28,877	99,586
Interest collected on advances to unconsolidated joint ventures		0	0
Cash assumed from joint venture at consolidation			0
Proceeds from senior notes			324,465
Repayments of other notes payable			0
Payment of debt issuance costs			(7,565)
Proceeds from exercise of stock options			102
Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	189,352	(71,789)	(41,900)
Purchases of property and equipment	(27)	(197)	(124)
Contributions and advances to unconsolidated joint ventures	(8,826)	(15,066)	(27,479)
Contributions to subsidiaries from corporate	0	0	0
Distributions of capital from subsidiaries to corporate	0	0	0
Distributions of capital and repayment of advances from unconsolidated joint ventures	9,133	15,436	15,577
Net cash provided by investing activities	280	351	(10,479)
Borrowings from credit facility	0	0	0
Repayments of credit facility	0	0	0
Repurchases of senior notes	0
Contributions to subsidiaries from corporate	98,620	249,435	275,794
Distributions to corporate from subsidiaries	(288,675)	(188,675)	(209,536)
Repurchases of common stock	0	0
Tax withholding paid on behalf of employees for stock awards	0	0	0
Net cash used in financing activities	(190,055)	60,760	62,148
Net increase (decrease) in cash, cash equivalents and restricted cash	(423)	(10,678)	9,769
Cash, cash equivalents and restricted cash – beginning of year	13,518	24,196	14,427
Cash, cash equivalents and restricted cash – end of year	13,095	13,518	24,196
Interest collected on advances to unconsolidated joint ventures		178	552
Cash assumed from joint venture at consolidation			995
Proceeds from senior notes			0
Repayments of other notes payable			(4,110)
Payment of debt issuance costs			0
Proceeds from exercise of stock options			0
Non-Guarantor Subsidiaries [Member]
Net cash provided by (used in) operating activities	23	(41)	(81)
Purchases of property and equipment	0	0	0
Contributions and advances to unconsolidated joint ventures	0	0	0
Contributions to subsidiaries from corporate	0	0	0
Distributions of capital from subsidiaries to corporate	0	0	0
Distributions of capital and repayment of advances from unconsolidated joint ventures	0	0	0
Net cash provided by investing activities	0	0	0
Borrowings from credit facility	0	0	0
Repayments of credit facility	0	0	0
Repurchases of senior notes	0
Contributions to subsidiaries from corporate	0	0	0
Distributions to corporate from subsidiaries	0	0	0
Repurchases of common stock	0	0
Tax withholding paid on behalf of employees for stock awards	0	0	0
Net cash used in financing activities	0	0	0
Net increase (decrease) in cash, cash equivalents and restricted cash	23	(41)	(81)
Cash, cash equivalents and restricted cash – beginning of year	147	188	269
Cash, cash equivalents and restricted cash – end of year	$ 170	147	188
Interest collected on advances to unconsolidated joint ventures		$ 0	0
Cash assumed from joint venture at consolidation			0
Proceeds from senior notes			0
Repayments of other notes payable			0
Payment of debt issuance costs			0
Proceeds from exercise of stock options			$ 0