Accrued Expenses

3 Months Ended

Mar. 31, 2014

Payables and Accruals [Abstract]

Accrued Expenses

12.    Accrued Expenses

Accrued expenses consist of the following:

	March 31, 2014		December 31, 2013
	(In thousands)
Payroll and benefits	$	62,298	$	75,909
Deferred revenue and customer advances	51,323		44,764
Accrued interest	44,351		21,807
Accrued royalties (Note 16)	43,324		43,324
Income taxes payable	14,655		17,528
Accrued severance plan obligations (Note 14)	11,414		11,197
Acquisition payable (Note 3)	—		17,897
Other accrued expenses	31,193		31,826
Total accrued expenses	$	258,558	$	264,252

Accrued royalties relate to our estimate of royalties due as a result of our pending patent license litigation (Note 16).