Notes Payable and Long-Term Debt (Details) (USD $) In Millions, unless otherwise specified																																																													12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Revolving Credit loans, (2.53% for 2013 and 2.07% for 2012)	Dec. 31, 2012 Revolving Credit loans, (2.53% for 2013 and 2.07% for 2012)	Dec. 31, 2013 6.90%, payable through 2020	Dec. 31, 2012 6.90%, payable through 2020	Dec. 31, 2013 5.55%, payable through 2026	Dec. 31, 2012 5.55%, payable through 2026	Dec. 31, 2013 5.53%, payable through 2024	Dec. 31, 2012 5.53%, payable through 2024	Dec. 31, 2013 5.56%, payable through 2026	Dec. 31, 2012 5.56%, payable through 2026	Dec. 31, 2013 3.90%, payable through 2024	Dec. 31, 2012 3.90%, payable through 2024	Dec. 31, 2013 4.35%, payable through 2026	Dec. 31, 2012 4.35%, payable through 2026	Dec. 31, 2013 6.20%, payable through 2013, secured by Deere Valley Center	Dec. 31, 2012 6.20%, payable through 2013, secured by Deere Valley Center	Dec. 31, 2013 6.38%, payable through 2017, secured by Midstate 99 Distribution Ctr.	Dec. 31, 2012 6.38%, payable through 2017, secured by Midstate 99 Distribution Ctr.	Dec. 31, 2013 5.50%, payable through 2014, secured by Little Cottonwood Center	Dec. 31, 2012 5.50%, payable through 2014, secured by Little Cottonwood Center	Dec. 31, 2013 5.88%, payable through 2014, secured by Midstate 99 Distribution Ctr.	Dec. 31, 2012 5.88%, payable through 2014, secured by Midstate 99 Distribution Ctr.	Dec. 31, 2013 5.39%, payable through 2015, secured by Waianae Mall	Dec. 31, 2012 5.39%, payable through 2015, secured by Waianae Mall	Dec. 31, 2013 5.89%, payable through 2016, secured by Pearl Highlands Center	Dec. 31, 2012 5.89%, payable through 2016, secured by Pearl Highlands Center	Dec. 31, 2013 2.08%, payable through 2021, secured by Kailua Town Center III (a)		Dec. 31, 2012 2.08%, payable through 2021, secured by Kailua Town Center III (a)		Dec. 31, 2013 2.84%, payable through 2016, secured by Kukui'ula Village (b)		Dec. 31, 2012 2.84%, payable through 2016, secured by Kukui'ula Village (b)		Dec. 31, 2013 2.80%, payable through 2016, secured by Kahala Estate Properties (c)		Dec. 31, 2012 2.80%, payable through 2016, secured by Kahala Estate Properties (c)		Dec. 31, 2013 3.05%, payable through 2014, secured by Maui Mall (d)		Dec. 31, 2012 3.05%, payable through 2014, secured by Maui Mall (d)		Dec. 31, 2013 3.31%, payable through 2018	Dec. 31, 2012 3.31%, payable through 2018	Dec. 31, 2013 2.00%, payable through 2018	Dec. 31, 2012 2.00%, payable through 2018	Dec. 31, 2013 2.65%, payable through 2016	Dec. 31, 2012 2.65%, payable through 2016	Dec. 31, 2013 5.00%, payable through 2014	Dec. 31, 2012 5.00%, payable through 2014	Dec. 31, 2013 5.19%, payable through 2019	Dec. 31, 2012 5.19%, payable through 2019	Dec. 31, 2013 1.17%, payable through 2021, secured by asphalt plant (e)		Dec. 31, 2012 1.17%, payable through 2021, secured by asphalt plant (e)		Dec. 31, 2013 1.85%, payable through 2017	Dec. 31, 2012 1.85%, payable through 2017	Dec. 31, 2013 LIBOR 2.08%, payable through 2021, secured by Kailua Town Center III (a)	Dec. 31, 2013 LIBOR 2.84%, payable through 2016, secured by Kukui'ula Village (b)	Dec. 31, 2013 LIBOR 2.80%, payable through 2016, secured by Kahala Estate Properties (c)	Dec. 31, 2013 LIBOR 3.05%, payable through 2014, secured by Maui Mall (d)	Dec. 31, 2013 LIBOR 1.17%, payable through 2021, secured by asphalt plant (e)
Notes payable and long-term debt
Total debt	$ 710.7	$ 235.5	$ 112.1	$ 5.0	$ 85.0	$ 90.0	$ 50.0	$ 50.0	$ 37.5	$ 37.5	$ 25.0	$ 25.0	$ 75.0	$ 0	$ 25.0	$ 0	$ 0	$ 10.1	$ 8.3	$ 8.3	$ 6.1	$ 6.3	$ 3.2	$ 3.3	$ 19.9	$ 0	$ 61.8	$ 0	$ 11.3	[1]	$ 0	[1]	$ 44.0	[2]	$ 0	[2]	$ 42.0	[3]	$ 0	[3]	$ 60.0	[4]	$ 0	[4]	$ 8.0	$ 0	$ 2.9	$ 0	$ 1.8	$ 0	$ 0.3	$ 0	$ 11.9	$ 0	$ 8.9	[5]	$ 0	[5]	$ 10.7	$ 0
Less debt (premium) discount	(1.8)	0
Total debt (contractual)	708.9	235.5
Less current portion	(105.2)	(15.5)
Add debt premium (discount)	1.8	0
Long-term debt	$ 605.5	$ 220.0
LIBOR																																																													LIBOR	LIBOR	LIBOR	LIBOR	LIBOR
Basis spread on variable rate																																																													1.50%	2.66%	2.625%	3.00%	1.00%
Fixed rate on derivative (in percents)																													5.95%																										5.98%

[1] Loan has a stated interest rate of LIBOR plus 1.5%, but is swapped through maturity to a 5.95% fixed rate

[2] Loan has a stated interest rate of LIBOR plus 2.66%.

[3] Loan has a stated interest rate of LIBOR plus 2.63%.

[4] Loan has a stated interest rate of LIBOR plus 3.00%. The loan was used as temporary financing for the acquisition of the Kailua Portfolio in December 2013. The loan was paid off with reverse 1031 proceeds from Maui Mall on January 6, 2014.

[5] Loan has a stated interest rate of LIBOR plus 1.0%, but is swapped through maturity to a 5.98% fixed rate