Property, Plant, and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Property, Plant and Equipment [Line Items]
Capitalized Computer Software, Gross	$ 59,237	$ 56,872
Leasehold Improvements, Gross	19,090	14,201
Property, Plant and Equipment, Other, Gross	34,783	24,933
Total Property, Plant and Equipment, Gross	113,110	96,006
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	88,060	82,648
Property, Plant and Equipment, Net	$ 25,050	$ 13,358