XML 88 R63.htm IDEA: XBRL DOCUMENT v2.4.0.6
Summary of Non Vested Restricted Share Activity (Detail) (USD $)
1 Months Ended 12 Months Ended
Nov. 30, 2012
Dec. 31, 2012
Number of non-vested restricted shares    
Beginning Balance   84,375
Shares granted upon conversion of options   632,500
Granted 11,000 11,000
Vested   (241,248)
Forfeited   (18,740)
Ending Balance   467,887
Weighted-average grant-date fair value    
Beginning Balance   $ 3.95
Shares granted upon conversion of options   $ 9.50
Granted   $ 9.90
Vested   $ 8.89
Forfeited   $ 9.50
Ending Balance   $ 8.82