Accrued Expenses

12 Months Ended

Dec. 31, 2012

Payables and Accruals [Abstract]

Accrued Expenses

Accrued Expenses

A summary of accrued expenses is as follows (in thousands):

	December 31,
	2012		2011
Accrued multi-client data library acquisition costs	$	47,678	$	26,871
Compensation, including compensation-related taxes and commissions	28,993		19,398
Deferred income tax liability	20,556		5,695
Accrued legal contingency	10,000		—
Income tax payable	8,348		1,211
Other	8,520		8,209
Total accrued expenses	$	124,095	$	61,384