Note 10 - Construction Joint Ventures - Unconsolidated Construction Joint Ventures Financial Information (Details) - USD ($) $ in Thousands		Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Cash, cash equivalents and marketable securities		$ 159,187	$ 181,889	$ 211,483
Other current assets	[1]	765,319	767,803	874,396
Noncurrent assets		111,981	164,022	176,195
Current liabilities		396,154	482,562	514,739
Equity in construction joint ventures	[2]	175,479	106,335	109,871
Other Partners Interest in Partnerships [Member]
Unconsolidated construction joint venture assets		692,226	751,125	849,213
Unconsolidated construction joint venture liabilities	[3]	227,372	226,308	211,749
Reporting Entitys Interest in Joint Venture [Member]
Unconsolidated construction joint venture assets	[1],[4]	344,261	362,589	412,861
Unconsolidated construction joint venture liabilities		$ 168,782	$ 256,254	$ 302,990

[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 September 30, 2021, December 31, 2020 and September 30, 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 $19.9 million, $82.5 million and $75.1 million as of September 30, 2021, December 31, 2020 and September 30, 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 September 30, 2021, December 31, 2020 and September 30, 2020, was $101.9 million, $88.7 million and $86.2 million, respectively, related to Granite’s share of estimated cost recovery of customer affirmative claims. In addition, this balance included $14.1 million, $13.1 million and $13.8 million as of September 30, 2021, December 31, 2020 and September 30, 2020, respectively, related to Granite’s share of estimated recovery of back charge claims.