Acquisitions (Tables) (StrikeIron [Member])
 3 Months Ended
Mar. 31, 2015
StrikeIron [Member]
  
Business Acquisition [Line Items]  
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed
The following table summarizes the fair value of assets acquired and liabilities assumed of $50.5 million and the acquiree's transaction related costs and debt settlement of $4.1 million, which were paid by the Company (in thousands):
Assumed liabilities, net of assets
$
(3,499
)
Identifiable intangible assets:
 
Developed and core technology
13,900

Customer relationships
3,500

Covenants not to compete
450

Trade names
40

Total identifiable net assets
14,391

Goodwill
36,116

Total assets acquired and liabilities assumed
50,507

Acquiree's transaction related costs and debt settlement
4,138

Total
$
54,645