CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Operating Activities
Net income (loss)	$ 15,051	$ (11,512)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation, depletion and amortization	49,968	54,788
Gain on sales of property and equipment	(6,891)	(7,653)
Stock-based compensation	8,933	10,645
Equity in net income from unconsolidated joint ventures	(27,001)	(51,826)
Changes in assets and liabilities:
Receivables	(103,913)	(99,856)
Costs and estimated earnings in excess of billings, net	(44,126)	(16,064)
Inventories	(12,131)	(1,882)
Contributions to unconsolidated construction joint ventures	(24,797)	(28,514)
Distributions from unconsolidated construction joint ventures	46,991	68,033
Other assets, net	7,250	(4,820)
Accounts payable	43,710	3,204
Accrued expenses and other current liabilities, net	123	20,942
Net cash used in operating activities	(46,833)	(64,515)
Investing Activities
Purchases of marketable securities	(49,975)	(34,957)
Maturities of marketable securities	40,000	57,000
Proceeds from sale of marketable securities	25,000	5,000
Purchases of property and equipment	(37,471)	(30,467)
Proceeds from sales of property and equipment	12,257	18,431
Payment of Kenny post-closing adjustments	0	(8,382)
Other investing activities, net	(1,109)	1,088
Net cash (used in) provided by investing activities	(11,298)	7,713
Financing Activities
Long-term debt principal repayments	(919)	(10,900)
Cash dividends paid	(15,229)	(15,150)
Purchases of common stock	(4,751)	(5,457)
Contributions from non-controlling partners	15,842	6,007
Distributions To Noncontrolling Partners	(686)	(28,015)
Other financing activities	1,927	790
Net cash used in financing activities	(3,816)	(52,725)
Decrease in cash and cash equivalents	(61,947)	(109,527)
Cash and cash equivalents at beginning of period	229,121	321,990
Cash and cash equivalents at end of period	167,174	212,463
Cash paid during the period for:
Interest	6,911	7,940
Income taxes	2,293	2,338
Other non-cash activities:
Performance guarantees	21,332	24,202
Non-cash investing and financing activities:
Restricted stock units issued, net of forfeitures	6,862	13,942
Accrued cash dividends	$ 5,090	$ 5,054