CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
CURRENT ASSETS:
Cash and cash equivalents ($102,679 and $105,735 related to VIEs)	$ 202,197	$ 374,289
Restricted cash	9,199	77,563
Restricted investments	84,355	78,912
Accounts receivable ($116,415 and $86,012 related to VIEs)	1,454,319	1,415,063
Retainage receivable ($162,259 and $122,335 related to VIEs)	568,881	648,441
Costs and estimated earnings in excess of billings ($143,105 and $39,846 related to VIEs)	1,356,768	1,236,734
Other current assets ($43,718 and $51,746 related to VIEs)	186,773	249,455
Total current assets	3,862,492	4,080,457
PROPERTY AND EQUIPMENT:
Land	40,175	44,167
Building and improvements	116,146	116,422
Construction equipment	580,909	570,675
Other equipment	175,832	192,247
Total property and equipment, gross	913,062	923,511
Less accumulated depreciation	(483,417)	(434,294)
Total property and equipment, net ($2,203 and $12,840 related to VIEs)	429,645	489,217
GOODWILL	205,143	205,143
INTANGIBLE ASSETS, NET	85,068	123,115
OTHER ASSETS	142,550	147,685
TOTAL ASSETS	4,724,898	5,045,617
CURRENT LIABILITIES:
Current maturities of long-term debt, net of unamortized discount and debt issuance costs totaling $0 and $2,040	24,406	100,188
Accounts payable ($96,097 and $116,461 related to VIEs)	512,056	794,611
Retainage payable ($37,007 and $26,439 related to VIEs)	268,945	315,135
Billings in excess of costs and estimated earnings ($355,270 and $362,427 related to VIEs)	761,689	839,222
Accrued expenses and other current liabilities ($8,566 and $9,595 related to VIEs)	210,017	215,207
Total current liabilities	1,777,113	2,264,363
LONG-TERM DEBT, less current maturities, net of unamortized discount and debt issuance costs totaling $17,109 and $20,209	969,248	925,277
DEFERRED INCOME TAXES	70,989	82,966
OTHER LONG-TERM LIABILITIES	233,828	230,066
TOTAL LIABILITIES	3,051,178	3,502,672
COMMITMENTS AND CONTINGENCIES (Note 8)
Stockholders' equity:
Preferred stock – authorized 1,000,000 shares ($1 par value), none issued	0	0
Common stock – authorized 112,500,000 shares ($1 par value), issued and outstanding 51,095,706 and 50,827,205 shares	51,096	50,827
Additional paid-in capital	1,133,150	1,127,385
Retained earnings	514,310	422,385
Accumulated other comprehensive loss	(43,635)	(46,741)
Total stockholders' equity	1,654,921	1,553,856
Noncontrolling interests	18,799	(10,911)
TOTAL EQUITY	1,673,720	1,542,945
TOTAL LIABILITIES AND EQUITY	$ 4,724,898	$ 5,045,617