Accrued Expenses

6 Months Ended

Jun. 30, 2014

Payables and Accruals [Abstract]

Accrued Expenses

13.    Accrued Expenses

Accrued expenses consist of the following:

	June 30, 2014		December 31, 2013
	(In thousands)
Payroll and benefits	$	69,629	$	75,909
Deferred revenue and customer advances	52,822		44,764
Accrued royalties (Note 17)	43,324		43,324
Accrued interest	21,369		21,807
Income taxes payable	17,117		17,528
Accrued severance plan obligations (Note 15)	11,794		11,197
Acquisition payable (Note 3)	—		17,897
Other accrued expenses	35,993		31,826
Total accrued expenses	$	252,048	$	264,252

Accrued royalties relate to our estimate of royalties due as a result of our pending patent license litigation (Note 17).