Note 12 - Operating Segment Information (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	North			Southeast
	Sea			Asia			Americas			Other			Total
Year Ended December 31, 2016
Revenue	$	76,759		$	14,069		$	32,891		$	-		$	123,719
Direct operating expenses		45,872			11,308			25,985			-			83,165
Drydock expense		2,549			588			1,525			-			4,662
General and administrative expense		6,961			5,218			6,876			18,608			37,663
Depreciation and amortization		24,157			8,654			22,008			3,363			58,182
Impairment charge		1,986			50,437			110,385			-			162,808
Gain on sale of assets and other		5,920			2,648			(4	)		-			8,564
Operating income (loss)	$	(10,686	)	$	(64,784	)	$	(133,884	)	$	(21,971	)	$	(231,325	)
Cash and cash equivalents	$	5,436		$	3,008		$	364		$	14		$	8,822
Long-lived assets(a)		440,670			149,668			401,425			3,457			995,220
Total assets		465,908			158,671			424,398			4,926			1,053,903
Capital expenditures		12,550			90			2,751			797			16,188
Year Ended December 31, 2015
Revenue	$	142,168		$	35,524		$	97,114		$	-		$	274,806
Direct operating expenses		84,474			16,483			68,880			-			169,837
Drydock expense		4,112			4,356			6,919			-			15,387
General and administrative expense		9,469			4,296			9,906			23,609			47,280
Depreciation and amortization		28,724			10,419			29,827			3,621			72,591
Impairment charge		22,919			-			129,184			-			152,103
Gain on sale of assets and other		1,244			(59	)		(25	)		-			1,160
Operating income (loss)	$	(8,774	)	$	29		$	(147,577	)	$	(27,230	)	$	(183,552	)
Cash and cash equivalents	$	12,930		$	4,911		$	1,221		$	2,877		$	21,939
Long-lived assets(a)		544,904			216,477			499,083			6,022			1,266,486
Total assets		589,934			232,356			529,654			9,308			1,361,252
Capital expenditures		5,992			253			26,602			2,581			35,428
Year Ended December 31, 2014
Revenue	$	225,253		$	64,753		$	205,763		$	-		$	495,769
Direct operating expenses		113,140			22,831			100,273			-			236,244
Drydock expense		9,094			4,400			11,346			-			24,840
General and administrative expense		17,226			5,387			12,837			27,278			62,728
Depreciation and amortization		32,440			11,168			28,789			2,939			75,336
Impairment charge		8,551			444			-			-			8,995
Gain on sale of assets and other		(3,260	)		(9,200	)		(1,579	)		-			(14,039	)
Operating income (loss)	$	48,062		$	29,723		$	54,097		$	(30,217	)	$	101,665
Cash and cash equivalents	$	19,345		$	15,126		$	7,959		$	8,355		$	50,785
Long-lived assets(a)(b)		627,728			226,920			638,706			7,064			1,500,418
Total assets		725,078			263,487			700,558			27,232			1,716,355
Capital expenditures		109,152			459			45,403			3,412			158,426