Note 10 - Construction Joint Ventures - Unconsolidated Construction Joint Ventures Financial Information (Details) - USD ($) $ in Thousands		Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Cash, cash equivalents and marketable securities		$ 161,574	$ 181,889	$ 144,472
Other current assets	[1]	768,127	767,803	821,399
Noncurrent assets		150,273	164,022	203,520
Current liabilities		470,667	482,562	555,380
Equity in construction joint ventures	[2]	130,923	106,335	117,300
Other Partners Interest in Partnerships [Member]
Unconsolidated construction joint venture assets		719,634	751,125	785,876
Unconsolidated construction joint venture liabilities	[3]	241,250	226,308	289,165
Reporting Entitys Interest in Joint Venture [Member]
Unconsolidated construction joint venture assets	[1],[4]	360,340	362,589	383,515
Unconsolidated construction joint venture liabilities		$ 229,417	$ 256,254	$ 266,215

[1] Included in this balance and in accrued expenses and other current liabilities on the condensed consolidated balance sheets was $82.3 million as of both March 31, 2021 and December 31, 2020 and $81.9 million as of March 31, 2020, related to performance guarantees.

[2] Included in this balance and in accrued expenses and other current liabilities on our condensed consolidated balance sheets was $55.6 million, $82.5 million and $73.2 million as of March 31, 2021, December 31, 2020 and March 31, 2020, respectively, related to deficits in unconsolidated construction joint ventures, which includes provisions for losses.

[3] Partners' interest and adjustments includes amounts to reconcile total net assets as reported by our partners to Granite's interest adjusted to reflect our accounting policies and estimates primarily related to contract forecast differences.

[4] Included in this balance as of March 31, 2021, December 31, 2020 and March 31, 2020, was $95.4 million, $88.7 million and $117.1 million, respectively, related to Granite's share of estimated cost recovery of customer affirmative claims. In addition, this balance included $12.9 million, $13.1 million and $18.2 million as of March 31, 2021, December 31, 2020 and March 31, 2020, respectively, related to Granite’s share of estimated recovery of back charge claims.