Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Details)

v3.8.0.1
Stock-Based Compensation (Details)
3 Months Ended
Mar. 31, 2018
tranche
shares
Stock-Based compensation  
Maximum number of shares available for future issuance 3,101,905
Unvested restricted stock units and awards  
Stock-Based compensation  
Number of shares vested 503,668
Performance-based restricted stock unit awards  
Stock-Based compensation  
Number of shares vested 26,000
Threshold percentage of matrics to be achieved 100.00%
Number of annual tranches | tranche 3
Performance-based restricted stock unit awards | Minimum  
Stock-Based compensation  
Number of shares to vest upon each evaluation date (as a percent) 50.00%
Performance-based restricted stock unit awards | Maximum  
Stock-Based compensation  
Number of shares to vest upon each evaluation date (as a percent) 150.00%