Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Components of (loss) income from continuing operations before foreign income taxes
United States	$ (11,923)	$ (4,559)	$ (15,930)
Foreign	6,618	12,718	8,153
(Loss) income from continuing operations before provision for foreign income taxes	(5,305)	8,159	(7,777)
Distribution to members as a percentage of the highest taxable income allocated to any common unit	45.00%
Provision (benefit) for foreign income taxes
Current	1,711	3,442	2,660
Deferred	39	(271)	(161)
Total	1,750	3,171	2,499
Deferred tax assets
Reserves	255	340
Deferred tax liabilities
Intangible assets	(1,127)	(1,226)
Fixed assets	(388)	(275)
Other	(70)	(98)
Total	(1,330)	(1,259)
Net long-term deferred tax liability	1,515	1,501
Net current deferred tax asset	185	242
Reserves for uncertain tax positions	$ 0	$ 0