Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies

Schedule of future minimum annual lease payments, and sublease rental income

(In thousands of dollars)	Future Minimum Lease Payments		Sublease Rental Income		Net Lease Payments
2013 (remaining)	$	6,495	$	896	$	5,599
2014	6,922		860		6,062
2015	6,293		502		5,791
2016	5,850		—		5,850
2017	5,538		—		5,538
Thereafter	38,364		—		38,364
Total	$	69,462	$	2,258	$	67,204