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Note 17 - Quarterly Results of Operations (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2015

Notes Tables

Schedule of Quarterly Financial Information [Table Text Block]

		(in thousands except per share amounts)
Quarters ended		Mar. 31, 2015(2)				June 30, 2015(3)				Sep. 30, 2015				Dec. 31, 2015

Total revenue		$	167,216			$	175,451			$	173,512			$	208,061
Operating income			10,043				18,774				14,629				24,336
Net income			10,227				11,001				7,627				13,230
Basic income per share			0.56				0.60				0.42				0.74
Diluted income per share			0.56				0.60				0.42				0.72

		(in thousands except per share amounts)

Quarters ended		Mar. 31, 2014				June 30, 2014				Sep. 30, 2014 (4)				Dec. 31, 2014

Total revenue		$	160,957			$	173,654			$	177,581			$	206,788
Operating income			354				9,056				5,586				24,650
Net income (loss)			(1,374	)			3,780				1,857				13,545
Basic (loss) income per share (1)			(0.09	)			0.25				0.12				0.84
Diluted (loss) income per share (1)			(0.09	)			0.25				0.12				0.82