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Stock-Based Compensation - Narrative (Details)
1 Months Ended 3 Months Ended
May 31, 2015
shares
Jun. 30, 2010
USD ($)
item
shares
Mar. 31, 2017
USD ($)
shares
Mar. 31, 2016
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]        
Options granted (in shares)       0
Options        
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]        
Unamortized compensation cost, net of expected forfeitures | $     $ 1,500,000  
Weighted average expected period over which the expense is to be recognized     2 years 3 months 18 days  
Tax benefits associated with exercise of stock options | $     $ 0 $ 0
Stock options exercised     0 0
RSU's        
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]        
Weighted average expected period over which the expense is to be recognized     1 year 10 months 24 days  
Unamortized compensation cost for awards other than options, net of expected forfeitures | $     $ 400,000  
Cash paid for employee income tax related to settlement of RSUs | $     20,000  
Total intrinsic value of the restricted stock units outstanding | $     $ 200,000  
RSU's | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]        
Stock-based compensation expense, recognition period     3 years  
RSU's | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]        
Stock-based compensation expense, recognition period     5 years  
Employee stock purchase plan        
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]        
Number of shares reserved for issuance   2,000,000    
Increase in number of shares reserved for issuance 2,000,000      
Number of offering periods | item   2    
Offering period   6 months    
Purchase price to be paid by participants as a percentage of price per share either at the beginning or the end of each six-month offering period, whichever is less   85.00%    
Employee stock purchase plan | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]        
Maximum amount of shares that eligible employee may purchase annually (in dollars) | $   $ 25,000    
Equity Incentive Plan2010 [Member] | Options        
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]        
Increase in number of shares reserved for issuance     50,000  
Mosy Plans [Member] | Options        
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]        
Options granted (in shares)     1,000  
Shares issued in Replacement Offering     1,000