Guarantor/Non Guarantor Condensed Consolidated Financial Statements (Statements of Operations (Unaudited)) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Condensed Financial Statements, Captions [Line Items]
Revenues	$ 107,480	$ 273,267	$ 436,305	$ 772,113
Costs and expenses:
Operating Costs	71,518	178,956	288,631	501,044
Depreciation and amortization	35,257	46,081	115,528	137,398
General and administrative	16,814	26,613	56,909	76,372
Intercompany leasing	0	0	0	0
Bad debt expense (recovery)	(1,071)	19	(358)	456
Impairment charges	2,329	678	79,648	678
Loss (gain) on dispositions of property and equipment	605	142	(2,639)	(1,589)
Gain on sale of fishing and rental services operations	0	(10,702)	0	(10,702)
Gain on litigation	0	1,324	0	4,200
Total costs and expenses	125,452	240,463	537,719	699,457
Income (loss) from operations	(17,972)	32,804	(101,414)	72,656
Other (expense) income:
Equity in earnings of subsidiaries	0	0	0	0
Interest expense, net of interest capitalized	(5,465)	(8,969)	(16,165)	(32,085)
Loss on extinguishment of debt	0	0	0	(22,482)
Other	(785)	(1,455)	(2,979)	360
Total other (expense) income	(6,250)	(10,424)	(19,144)	(54,207)
Income (loss) before income taxes	(24,222)	22,380	(120,558)	18,449
Income tax (expense) benefit	6,682	(9,927)	13,718	(8,894)
Net income (loss)	(17,540)	12,453	(106,840)	9,555
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	104,810	250,363	399,596	701,518
Costs and expenses:
Operating Costs	67,554	159,958	258,125	450,262
Depreciation and amortization	32,797	42,250	104,841	126,093
General and administrative	11,671	18,665	39,916	53,301
Intercompany leasing	(1,215)	(1,215)	(3,645)	(3,645)
Bad debt expense (recovery)	(1,071)	19	(358)	456
Impairment charges	2,329	678	23,766	678
Loss (gain) on dispositions of property and equipment	651	147	(2,572)	(1,317)
Gain on sale of fishing and rental services operations		(10,702)		(10,702)
Gain on litigation		0		0
Total costs and expenses	112,716	209,800	420,073	615,126
Income (loss) from operations	(7,906)	40,563	(20,477)	86,392
Other (expense) income:
Equity in earnings of subsidiaries	(6,309)	(3,742)	(73,472)	345
Interest expense, net of interest capitalized	2	(22)	(120)	(39)
Loss on extinguishment of debt		0		0
Other	472	707	1,343	1,995
Total other (expense) income	(5,835)	(3,057)	(72,249)	2,301
Income (loss) before income taxes	(13,741)	37,506	(92,726)	88,693
Income tax (expense) benefit	2,533	(15,598)	5,547	(34,193)
Net income (loss)	(11,208)	21,908	(87,179)	54,500
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	2,670	22,904	36,709	70,595
Costs and expenses:
Operating Costs	3,964	18,998	30,506	50,782
Depreciation and amortization	2,135	3,473	9,667	10,322
General and administrative	417	976	1,783	2,840
Intercompany leasing	1,215	1,215	3,645	3,645
Bad debt expense (recovery)	0	0	0	0
Impairment charges	0	0	56,632	0
Loss (gain) on dispositions of property and equipment	(174)	(5)	(195)	(272)
Gain on sale of fishing and rental services operations		0		0
Gain on litigation		0		0
Total costs and expenses	7,557	24,657	102,038	67,317
Income (loss) from operations	(4,887)	(1,753)	(65,329)	3,278
Other (expense) income:
Equity in earnings of subsidiaries	0	0	0	0
Interest expense, net of interest capitalized	6	(4)	18	3
Loss on extinguishment of debt		0		0
Other	(1,098)	(2,022)	(3,894)	(1,229)
Total other (expense) income	(1,092)	(2,026)	(3,876)	(1,226)
Income (loss) before income taxes	(5,979)	(3,779)	(69,205)	2,052
Income tax (expense) benefit	(330)	37	(4,267)	(1,707)
Net income (loss)	(6,309)	(3,742)	(73,472)	345
Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and expenses:
Operating Costs	0	0	0	0
Depreciation and amortization	0	0	0	0
General and administrative	(138)	(138)	(414)	(414)
Intercompany leasing	0	0	0	0
Bad debt expense (recovery)	0	0	0	0
Impairment charges	0	0	(750)	0
Loss (gain) on dispositions of property and equipment	0	0	0	0
Gain on sale of fishing and rental services operations		0		0
Gain on litigation		0		0
Total costs and expenses	(138)	(138)	(1,164)	(414)
Income (loss) from operations	138	138	1,164	414
Other (expense) income:
Equity in earnings of subsidiaries	17,517	(18,166)	160,651	(54,845)
Interest expense, net of interest capitalized	0	0	0	0
Loss on extinguishment of debt		0		0
Other	(138)	(138)	(414)	(414)
Total other (expense) income	17,379	(18,304)	160,237	(55,259)
Income (loss) before income taxes	17,517	(18,166)	161,401	(54,845)
Income tax (expense) benefit	0	0	0	0
Net income (loss)	17,517	(18,166)	161,401	(54,845)
Parent [Member]
Condensed Financial Statements, Captions [Line Items]
Revenues	0	0	0	0
Costs and expenses:
Operating Costs	0	0	0	0
Depreciation and amortization	325	358	1,020	983
General and administrative	4,864	7,110	15,624	20,645
Intercompany leasing	0	0	0	0
Bad debt expense (recovery)	0	0	0	0
Impairment charges	0	0	0	0
Loss (gain) on dispositions of property and equipment	128	0	128	0
Gain on sale of fishing and rental services operations		0		0
Gain on litigation		1,324		4,200
Total costs and expenses	5,317	6,144	16,772	17,428
Income (loss) from operations	(5,317)	(6,144)	(16,772)	(17,428)
Other (expense) income:
Equity in earnings of subsidiaries	(11,208)	21,908	(87,179)	54,500
Interest expense, net of interest capitalized	(5,473)	(8,943)	(16,063)	(32,049)
Loss on extinguishment of debt		0		(22,482)
Other	(21)	(2)	(14)	8
Total other (expense) income	(16,702)	12,963	(103,256)	(23)
Income (loss) before income taxes	(22,019)	6,819	(120,028)	(17,451)
Income tax (expense) benefit	4,479	5,634	12,438	27,006
Net income (loss)	$ (17,540)	$ 12,453	$ (107,590)	$ 9,555