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Stock-Based Compensation Restricted Stock (Tables)
 3 Months Ended
Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Restricted stock and restricted stock unit transactions
 
 
Three Months Ended June 30,
 
 
2017
 
2016
 
 
Number of Shares
 
Weighted-Average Grant Date Value
 
Number of Shares
 
Weighted-Average Grant Date Value
Unvested shares at March 31
 
3,321

 
38.92

 
3,058

 
$
43.34

Granted
 
1,441

 
37.64

 
1,642

 
31.24

Vested
 
(1,281
)
 
39.41

 
(1,164
)
 
38.88

Canceled/forfeited
 
(32
)
 
38.89

 
(63
)
 
42.11

Unvested shares at June 30
 
3,449

 
$
38.20

 
3,473

 
$
39.11