Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Details)

v3.2.0.727
Fair Value Measurements (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2015
Dec. 31, 2014
WMS    
Fair Value Measurements    
The cash flow period from the acquisition date used in determining fair value 3 years  
Klein Decisions, Inc.    
Fair Value Measurements    
The cash flow period from the acquisition date used in determining fair value 3 years  
Level 1 | Recurring Basis | Money market funds    
Fair Value Measurements    
Cash and cash equivalents $ 41,363 $ 70,760