Note 12 - Insurance Reserves (Details) - Insurance Reserves - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Insurance Reserves [Abstract]
Balance at beginning of period	$ 47,389,000	$ 49,363,000	$ 50,470,000	$ 49,637,000
Balance at end of period	46,685,000	49,469,000	46,685,000	49,469,000
Expense provisions	1,652,000	1,530,000	4,501,000	4,577,000
Cash payments, net of recoveries	(2,356,000)	(1,424,000)	(6,786,000)	(4,745,000)
Adjustments	$ 0	$ 0	$ (1,500,000)	$ 0