CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Current assets
Cash and cash equivalents ($131,481, $131,965 and $91,903 related to consolidated construction joint ventures (“CCJVs”))	$ 200,263	$ 272,804	$ 193,581
Short-term marketable securities	36,049	30,002	39,961
Receivables, net ($24,990, $21,237 and $17,598 related to CCJVs)	368,215	473,246	330,192
Contract assets ($15,140, $19,699 and $23,889 related to CCJVs)	260,250	219,754	178,663
Inventories	96,862	88,623	71,295
Equity in construction joint ventures	300,489	282,229	254,816
Other current assets ($11,795, $11,744 and $14,180 related to CCJVs)	54,590	48,731	43,125
Total current assets	1,316,718	1,415,389	1,111,633
Property and equipment, net ($35,377, $34,761 and $44,655 related to CCJVs)	552,504	549,688	409,708
Long-term marketable securities	30,000	36,098	67,305
Investments in affiliates	81,034	84,354	38,682
Goodwill	259,695	259,471	53,799
Right of use assets	71,480	0	0
Other noncurrent assets	128,349	131,601	78,100
Total assets	2,439,780	2,476,601	1,759,227
Current liabilities
Current maturities of long-term debt	47,281	47,286	47,298
Accounts payable ($41,013, $37,086 and $31,854 related to CCJVs)	216,966	251,481	226,253
Contract liabilities ($46,775, $60,288 and $33,760 related to CCJVs)	90,752	105,449	71,030
Accrued expenses and other current liabilities ($3,269, $2,046 and $2,090 related to CCJVs)	265,102	273,626	233,637
Total current liabilities	620,101	677,842	578,218
Long-term debt	333,290	335,119	176,011
Lease liabilities	60,237	0	0
Other long-term liabilities	64,219	66,006	40,104
Commitments and contingencies (Note 18)	0	0	0
Equity
Preferred stock, $0.01 par value, authorized 3,000,000 shares, none outstanding	0	0	0
Common stock, $0.01 par value, authorized 150,000,000 shares; issued and outstanding: 46,812,366 shares as of March 31, 2019, 46,665,889 shares as of December 31, 2018 and 40,047,187 shares as of March 31, 2018	468	467	400
Additional paid-in capital	566,497	564,559	162,038
Accumulated other comprehensive (loss) income	(626)	(749)	1,197
Retained earnings	746,100	787,356	751,801
Total Granite Construction Incorporated shareholders’ equity	1,312,439	1,351,633	915,436
Non-controlling interests	49,494	46,001	49,458
Total equity	1,361,933	1,397,634	964,894
Total liabilities and equity	$ 2,439,780	$ 2,476,601	$ 1,759,227