XML 56 R45.htm IDEA: XBRL DOCUMENT v3.10.0.1
Stock award plan - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Mar. 05, 2013
Jun. 30, 2016
May 31, 2016
May 31, 2013
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Stock option plan                
Share-based compensation expense         $ 8,084 $ 7,885 $ 15,831 $ 16,914
Unrecognized compensation cost         $ 57,800   $ 57,800  
Weighted average remaining service period for recognition of unrecognized compensation cost             2 years 8 months 9 days  
Common stock                
Stock option plan                
Number of shares available for issuance (in shares)         654,499   654,499  
Unvested restricted stock                
Stock option plan                
Grants in period (in shares)             345,991  
Stock option                
Stock option plan                
Granted (in shares)             2,247,739  
Inducement grants for non-statutory stock options (in shares)             461,750  
Expected dividend yield (as a percent)             0.00%  
Weighted average grant date fair value (in dollars per share)             $ 13.87  
SARs                
Stock option plan                
Granted (in shares)     897,290          
Vesting period             4 years  
Vested (in shares)             177,329  
Share-based compensation expense             $ 2,600  
2013 Stock Incentive Plan                
Stock option plan                
Number of shares available for issuance (in shares) 0              
2013 Stock Incentive Plan | Common stock                
Stock option plan                
Number of shares authorized (in shares) 739,937              
2013 Stock Incentive Plan | Unvested restricted stock                
Stock option plan                
Grants in period (in shares) 735,324              
2013 Stock Incentive Plan | Stock option                
Stock option plan                
Granted (in shares) 4,613              
2009 Equity and Long Term Incentive Plan                
Stock option plan                
Number of shares available for issuance (in shares)         0   0  
Number of additional shares authorized (in shares)       2,500,000        
2009 Equity and Long Term Incentive Plan and 2013 Stock Incentive Plan | Common stock                
Stock option plan                
Number of shares available for issuance (in shares)       122,296        
2009 Equity and Long Term Incentive Plan and 2013 Stock Incentive Plan | 1998 Employee, Director and Consultant Stock Option Plan | Common stock | Maximum                
Stock option plan                
Number of shares subject to outstanding awards (in shares)       3,040,444        
2013 Long Term Incentive Plan | Minimum                
Stock option plan                
Annual increase in the number of shares (in shares) on the first day of the fiscal year       2,500,000        
Annual increase in the number of shares outstanding on the first day of the fiscal year       4.00%        
Employee Stock Purchase Plan                
Stock option plan                
Number of shares authorized (in shares)   1,000,000            
Share-based compensation expense             $ 500  
Award requisite service period   6 months            
Purchase price of common stock, percent   85.00%            
Employee stock purchase plan, voting percentage limit   5.00%