Condensed Unaudited Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 10,472	$ 7,406
Accounts receivable, net of allowance	873,102	652,553
Inventories	91,037	88,914
Deferred tax assets, net	0	10,596
Prepaid expenses and deposits	27,851	21,001
Other current assets	6,435	11,739
Current assets of discontinued operations	16,665	30,608
Total current assets	1,025,562	822,817
Property and equipment, net	287,529	263,007
Goodwill	724,347	714,772
Other intangible assets, net	102,229	110,707
Available for sale auction rate securities	14,110	13,565
Other assets	32,928	42,167
Long-term assets of discontinued operations	9,195	121,695
Total assets	2,195,900	2,088,730
Current liabilities:
Current maturities of long-term debt	42,436	34,050
Accounts payable	431,864	297,712
Accrued salaries and wages	55,661	37,561
Accrued taxes payable	22,316	5,383
Accrued insurance	18,351	19,304
Other accrued expenses	17,021	10,629
Current deferred tax liabilities, net	4,619	0
Acquisition-related contingent consideration, current	19,210	16,955
Billings in excess of costs and earnings	104,281	108,433
Other current liabilities	28,407	27,169
Current liabilities of discontinued operations	5,334	29,274
Total current liabilities	749,500	586,470
Acquisition-related contingent consideration	70,870	75,925
Long-term debt	410,561	460,690
Deferred tax liabilities, net	108,684	122,614
Other liabilities	40,319	31,824
Total liabilities	1,379,934	1,277,523
Commitments and contingencies (See Note 14)
Shareholders' 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 - 85,435,438 and 85,162,527 as of September 30, 2012 and December 31, 2011, respectively	8,544	8,516
Capital surplus	798,108	792,096
Accumulated surplus	164,574	93,489
Accumulated other comprehensive loss	(5,303)	(7,946)
Treasury stock, at cost; shares - 9,467,286 and 4,593,663 as of September 30, 2012 and December 31, 2011, respectively	(150,000)	(75,000)
Total MasTec, Inc. shareholders' equity	815,923	811,155
Non-controlling interests	43	52
Total shareholders' equity	815,966	811,207
Total liabilities and shareholders' equity	$ 2,195,900	$ 2,088,730