Identified Intangible Assets and Goodwill, Net (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Carrying amount of intangible assets	$ 22,113	$ 22,330
Accumulated amortization	17,588	16,926
Identified intangibles, net	4,525	5,404
Goodwill	21,673	21,677
Identified intangible assets and goodwill, net	26,198	27,081
Customer lists/relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Carrying amount of intangible assets	12,411	12,627
Accumulated amortization	9,728	9,570
Employment-related [Member]
Finite-Lived Intangible Assets [Line Items]
Carrying amount of intangible assets	5,345	5,345
Accumulated amortization	4,830	4,573
Tradenames [Member]
Finite-Lived Intangible Assets [Line Items]
Carrying amount of intangible assets	4,357	4,358
Accumulated amortization	$ 3,030	$ 2,783