Business Combinations, (Allocation of Total Purchase Price) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013
PointBridge [Member]
Legal Entities [Line Items]
Acquired tangible assets	$ 5.0
Acquired intangible assets	6.2
Liabilities assumed	(1.1)
Goodwill	10.4
Total purchase price	20.5
Nascent [Member]
Legal Entities [Line Items]
Acquired tangible assets	3.8
Acquired intangible assets	4.4
Liabilities assumed	(1.1)
Goodwill	9.7
Total purchase price	16.8
Northridge [Member]
Legal Entities [Line Items]
Acquired tangible assets	3.1
Acquired intangible assets	4.1
Liabilities assumed	(2.9)
Goodwill	9.6
Total purchase price	13.9
ClearTask [Member]
Legal Entities [Line Items]
Acquired tangible assets	2.2
Acquired intangible assets	1.7
Liabilities assumed	(0.9)
Goodwill	5.5
Total purchase price	8.5
TriTek [Member]
Legal Entities [Line Items]
Acquired tangible assets	12.3
Acquired intangible assets	6.2
Liabilities assumed	(5.6)
Goodwill	8.2
Total purchase price	$ 21.1