Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 423,118	$ 71,427
Accounts receivable, net of allowance	784,488	850,326
Contract assets	969,743	1,024,568
Inventories, net	89,645	100,069
Prepaid expenses	60,631	52,000
Other current assets	31,390	75,169
Total current assets	2,359,015	2,173,559
Property and equipment, net	982,328	905,835
Operating lease assets	176,573	229,903
Goodwill, net	1,243,034	1,221,440
Other intangible assets, net	184,043	211,528
Other long-term assets	282,856	254,741
Total assets	5,227,849	4,997,006
Current liabilities:
Current portion of long-term debt, including finance leases	145,110	118,429
Current portion of operating lease liabilities	72,481	81,561
Accounts payable	571,269	535,029
Accrued salaries and wages	135,316	87,562
Other accrued expenses	187,647	115,581
Contract liabilities	228,388	206,180
Other current liabilities	74,988	74,784
Total current liabilities	1,415,199	1,219,126
Long-term debt, including finance leases	1,157,632	1,314,030
Long-term operating lease liabilities	116,506	154,553
Deferred income taxes	302,938	296,326
Other long-term liabilities	230,049	221,280
Total liabilities	3,222,324	3,205,315
Commitments and contingencies (Note 14)
Equity
Preferred stock, $1.00 par value: authorized shares - 5,000,000; issued and outstanding shares – none	0	0
Common stock, $0.10 par value: authorized shares - 145,000,000; issued shares - 93,107,440 and 91,909,430 (including 1,843,041 and 1,221,593 of unvested stock awards) as of December 31, 2020 and 2019, respectively	9,311	9,191
Capital surplus	837,453	809,753
Retained earnings	1,833,557	1,510,709
Accumulated other comprehensive loss	(91,444)	(75,706)
Treasury stock, at cost: 18,941,926 shares and 15,344,917 shares as of December 31, 2020 and 2019, respectively	(586,955)	(466,727)
Total MasTec, Inc. shareholders’ equity	2,001,922	1,787,220
Non-controlling interests	3,603	4,471
Total equity	2,005,525	1,791,691
Total liabilities and equity	$ 5,227,849	$ 4,997,006
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized	145,000,000	145,000,000
Common stock, shares issued	93,107,440	91,909,430
Treasury stock, shares	18,941,926	15,344,917
Common Stock [Member]
Equity
Total equity	$ 9,311	$ 9,191
Common stock, shares issued	93,107,440	91,909,430
Restricted Stock [Member] | Common Stock [Member]
Unvested stock awards (in shares)	1,843,041	1,221,593