Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Incentive Compensation Plans (Valuation Assumptions) (Details)

v3.10.0.1
Stock-Based Incentive Compensation Plans (Valuation Assumptions) (Details) - ESPP
3 Months Ended
Jun. 30, 2018
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected volatility 45.88%
Risk-free interest rate 2.05%
Expected dividends 0.00%
Expected term (in years) 6 months
Forfeiture rate 7.80%
Fair value of stock purchase rights granted under the ESPP (in usd per share) $ 3.42