Note 13 - Notes and Mortgage Payable - Note Repayments (Details) - USD ($) $ in Millions		1 Months Ended
		Aug. 31, 2016	Mar. 31, 2016	Nov. 30, 2015	Sep. 30, 2015	Feb. 28, 2015
Canadian Notes Payable [Member]
Amount Repaid	[1]	$ 270.9
Senior Note 1 [Member]
Amount Repaid	[2]	$ 290.9
Maturity Date	[2]	May-17
Interest Rate	[2]	5.70%
Medium-term Note 1 [Member]
Amount Repaid			$ 300.0
Maturity Date			Mar-16
Interest Rate			5.783%
Medium-term Note 2 [Member]
Amount Repaid				$ 150.0
Maturity Date				Nov-15
Interest Rate				5.584%
Senior Note 2 [Member]
Amount Repaid					$ 100.0
Maturity Date					Sep-15
Interest Rate					5.25%
Medium-term Note 3 [Member]
Amount Repaid						$ 100.0
Maturity Date						Feb-15
Interest Rate						4.904%

[1] On August 26, 2016, the redemption date, the Company repaid (i) its Canadian denominated ("CAD") $150.0 million 5.99% notes, which were scheduled to mature in April 2018 and (ii) its CAD $200.0 million 3.855% notes, which were scheduled to mature in August 2020. The Company recorded aggregate early extinguishment of debt charges of CAD $34.1 million (USD $26.3 million) resulting from the early repayment of these notes.

[2] The Company recorded an early extinguishment of debt charge of $10.2 million resulting from the early repayment of this note.