Long-Term Incentive Plan (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		3 Months Ended		9 Months Ended				1 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Restricted Shares and Performance awards	Sep. 30, 2013 Restricted Shares and Performance awards	Sep. 30, 2014 Restricted Shares and Performance awards	Sep. 30, 2013 Restricted Shares and Performance awards	Sep. 30, 2014 Restricted Shares and Performance awards Minimum	Sep. 30, 2014 Restricted Shares and Performance awards Maximum	Aug. 31, 2011 Time-based shares Kenneth E. Cruse	Aug. 31, 2011 Performance-based shares Kenneth E. Cruse
Long-Term Incentive Plan
Vesting period							3 years	5 years
Percentage of total shares granted represented by each award									60.00%	40.00%
Period after the grant date for vesting (in years)									third, fourth and fifth anniversary	fifth anniversary
Compensation Expense, including forfeitures			$ 2,178	$ 1,861	$ 6,885	$ 5,301
Net-settle adjustment					(2,116)
Amortization related to shares issued to design and construction employees	354	293			354
Vesting of restricted stock presented on statement of equity	$ 5,123				$ 5,123