Note 12 - Insurance Reserves (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Balance at beginning of period	$ 45,811	$ 50,470
Expense provisions	1,388	1,273
Cash payments, net of recoveries	(820)	(1,728)
Balance at end of period	$ 46,379	$ 50,015