Rendering

Component: (Network and Table)
Network
0612 - Disclosure - Stock-based compensation (Details)
(http://advisoryboardcompany.com/role/StockbasedCompensationDetails)
Table(Implied)
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001157377 (http://www.sec.gov/CIK)
Stock-based Compensation [Abstract]Period [Axis]
2011-04-01 - 2012-03-31
2010-04-01 - 2011-03-31
2009-04-01 - 2010-03-31
Stock-based Compensation [Abstract]
 
 
 
Summary of changes in RSUs
 
 
 
Number of RSUs, Non-vested, Beginning balance
332,109  
205,615  
247,501  
Number of RSUs, Granted
232,350  
266,314  
76,500  
Number of RSUs, Forfeited
(3,055) 
(20,000) 
(3,150) 
Number of RSUs, Vested
(113,084) 
(119,820) 
(115,236) 
Number of RSUs, Non-vested, Ending balance
448,320  
 
332,109  
 
205,615  
 
Weighted Average Grant Date Fair Value, Non-vested, Beginning balance
34.67  
36.47  
47.97  
Weighted Average Grant Date Fair Value, Granted
49.62  
33.85  
18.52  
Weighted Average Grant Date Fair Value, Forfeited
47.06  
35.32  
48.86  
Weighted Average Grant Date Fair Value, Vested
37.83  
35.83  
48.93  
Weighted Average Grant Date Fair Value, Non-vested, Ending balance
41.53  
 
34.67  
 
36.47