Long-Lived Assets (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Finite Lived Intangible Assets [Line Items]
Write-down of goodwill		$ 1,967,000
Proceeds from the disposition of business operations	1,130,000	4,530,000
Loss on disposition of business operations	222,000	(3,017,000)
Client contracts
Finite Lived Intangible Assets [Line Items]
Estimated useful life	63 months
Estimated total amortization expense 2015	14,800,000
Estimated total amortization expense 2016	10,500,000
Estimated total amortization expense 2017	8,300,000
Estimated total amortization expense 2018	6,200,000
Estimated total amortization expense 2019	4,200,000
Software
Finite Lived Intangible Assets [Line Items]
Estimated useful life	78 months
Estimated total amortization expense 2015	10,500,000
Estimated total amortization expense 2016	8,000,000
Estimated total amortization expense 2017	6,600,000
Estimated total amortization expense 2018	5,300,000
Estimated total amortization expense 2019	$ 3,600,000