Geographic Information And Major Customers (Tables)

3 Months Ended

Mar. 31, 2012

Geographic Information And Major Customers [Abstract]

Revenue From International Customers By Geographic Areas

	Three Months Ended March 31,
(Dollars in thousands)	2012				2011
U.S.	$	55,692	50	%	$	51,912	51	%
United Kingdom		18,138	16	%		19,895	19	%
Europe, other		14,558	13	%		20,497	20	%
Other		22,779	21	%		10,056	10	%
	$	111,167	100	%	$	102,360	100	%

Trade Receivables Of Major Customers

	Three Months Ended March 31,
(Dollars in thousands)	2012			2011
Total Revenue	$	111,167		$	102,360
Customer A		11	%		—	%

	As of March 31,			As of December 31,
(Dollars in thousands)	2012			2011
Trade receivables, net of allowances	$	106,852		$	98,293
Customer A		13	%		—	%
Customer B		13	%		14	%