Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Commitments And Contingencies Disclosure [Abstract]

Future Minimum Rental Payments on Operating Leases

The Company leases certain facilities and equipment under operating leases. Most leases contain renewal options for varying periods. Future minimum rental payments on such operating leases at December 31, 2012 are as follows:

(Dollar amounts in thousands)	Unrelated parties		Related party		Minimum future rentals
2013	$	806	$	3,858	$	4,664
2014		636		3,973		4,609
2015		484		1,001		1,485
2016		314		—		314
2017 and thereafter		118		—		118
	$	2,358	$	8,832	$	11,190