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Note 9 - Acquisitions and Subsidiaries and Joint Ventures with Noncontrolling Owners' Interests (Details) - Mandatorily Redeemable Noncontrolling Interest Liability (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2014	Dec. 31, 2013
Mandatorily Redeemable Noncontrolling Interest Liability [Abstract]
Member’s interest subject to mandatory redemption	$ 20,000	$ 20,000	$ 20,000
Undistributed earnings attributable to this interest	6,037	6,037	3,989
Earnings distributed	(2,000)	(3,200)
Total liability	$ 22,837	$ 22,837	$ 23,989