Condensed Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
OPERATING ACTIVITIES
Net loss	$ (110,312)	$ (102,797)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	126,351	70,562
Goodwill impairment	40,000
Bad debt expense	1,853	(1,129)
Loss on prepayment of debt, amortization of deferred financing costs, and accretion of debt discount	4,789	5,613
Stock-based compensation	1,987	2,059
Change in fair value of derivative liabilities	(31,381)	(1,370)
Other, net	(5,819)	1,750
Changes in operating assets and liabilities:
Restricted cash	270	(1,620)
Accounts receivable	4,328	83,113
Prepaid expenses and other assets	(3,789)	(4,221)
Deferred costs	1,789	(22,163)
Accounts payable	13,322	(3,163)
Deferred revenue	622	26,064
Accrued liabilities and other liabilities	15,574	(13,708)
Net cash provided by operating activities	59,584	38,990
INVESTING ACTIVITIES
Investment in multi-client data library	(63,888)	(30,637)
Acquisition of PGS Onshore, net of cash acquired		(180,832)
Purchases and acquisition of property and equipment	(14,031)	(40,999)
Investments in other assets	(1,616)	(3,295)
Proceeds from disposal of property and equipment and insurance claims	1,640	1,210
Proceeds from sale of other assets	5,948
Change in restricted cash held for purchase of PGS Onshore		303,803
Net cash provided by (used in) investing activities	(71,947)	49,250
FINANCING ACTIVITIES
Proceeds from issuance of debt	60,348	26,000
Proceeds from common stock issuance, net		1,714
Payments on capital lease obligations and vendor financing	(1,807)	(24,447)
Payments on debt	(33,000)	(44,864)
Payments of debt issuance costs	(2,376)	(3,047)
Net cash provided by (used in) financing activities	23,165	(44,644)
Net increase in cash	10,802	43,596
Cash at the beginning of period	42,851	10,176
Cash at the end of period	53,653	53,772
Cash disclosures:
Interest paid	18,499	15,355
Income taxes paid	4,144	11,386
Non-cash disclosures:
Capitalized depreciation to multi-client data library	4,491	709
Purchases of property and equipment under capital lease obligations	6,743
Deferred financing costs paid in common stock	$ 3,980