CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating activities
Net (loss) income	$ (44,766)	$ 59,920	$ 66,085
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Non-cash restructuring and impairment charges, net	44,734	145	6,745
Depreciation, depletion and amortization	72,899	56,101	60,546
Gain on sales of property and equipment	(12,130)	(27,447)	(15,789)
Change in deferred income tax	(19,557)	6,013	8,566
Stock-based compensation	13,443	11,475	12,155
Equity in net income from unconsolidated joint ventures	(72,764)	(101,747)	(67,845)
Changes in assets and liabilities, net of the effects of acquisition in 2012:
Receivables	12,236	9,415	(2,258)
Costs and estimated earnings in excess of billings, net	(507)	2,780	(56,524)
Inventories	(2,689)	(8,079)	43
Contributions to unconsolidated construction joint ventures	(40,758)	(4,986)	(800)
Distributions from unconsolidated construction joint ventures	110,347	92,474	35,598
Other assets, net	3,961	8,898	(3,715)
Accounts payable	(34,048)	(9,472)	28,960
Accrued expenses and other current liabilities, net	(25,021)	(3,700)	20,578
Net cash provided by operating activities	5,380	91,790	92,345
Investing activities
Purchases of marketable securities	(74,924)	(124,596)	(155,122)
Maturities of marketable securities	63,650	90,100	110,875
Proceeds from sale of marketable securities	5,000	75,000	33,268
Purchases of property and equipment	(43,682)	(37,622)	(45,035)
Proceeds from sales of property and equipment	25,759	34,392	27,959
Acquisition of Kenny, net of cash acquired	(8,382)	(79,640)	0
Other investing activities, net	931	(188)	327
Net cash used in investing activities	(31,648)	(42,554)	(27,728)
Financing activities
Proceeds from long-term debt	0	70,495	2,122
Long-term debt principal payments	(12,148)	(11,751)	(16,907)
Cash dividends paid	(20,210)	(20,117)	(20,117)
Purchase of common stock	(5,896)	(4,854)	(4,029)
Proceeds from Contributions from Affiliates	5,117	107	519
Distributions to non-controlling partners	(34,600)	(16,093)	(21,581)
Other financing activities, net	1,136	(2,023)	344
Net cash (used in) provided by financing activities	(66,601)	15,764	(59,649)
(Decrease) increase in cash and cash equivalents	(92,869)	65,000	4,968
Cash and cash equivalents at beginning of year	321,990	256,990	252,022
Cash and cash equivalents at end of year	229,121	321,990	256,990
Cash paid during the period for:
Interest	14,622	11,484	16,239
Income taxes	4,119	24,616	24,783
Performance guarantees	(23,765)	6,528	(4,941)
Non-cash investing and financing activities:
Restricted stock/units issued, net of forfeitures (See Note 14)	13,775	14,175	6,874
Accrued cash dividends	5,059	5,035	5,028
Debt payments out of escrow from sale of assets	0	1,109	14,447
Debt extinguishment from joint venture interest assignment	0	18,612	0
Debt payment from refinance	$ 0	$ 1,150	$ 0