XML 42 R32.htm IDEA: XBRL DOCUMENT v3.8.0.1
Equity Incentive Plans (Details) - shares
Jan. 20, 2017
Sep. 30, 2017
Dec. 31, 2016
2012 Plan      
Equity Incentive Plans      
Number of options or stock awards available for grant under the Plan   0 17,963
2012 Plan | Maximum      
Equity Incentive Plans      
Number of options or stock awards available for grant under the Plan     61,483
Common Stock | 2012 Plan      
Equity Incentive Plans      
Shares reserved for issuance 1,387,204    
Common Stock | 2016 Plan      
Equity Incentive Plans      
Annual increase in authorized shares (as a percent) 4.00%    
Common Stock | 2016 Plan | Maximum      
Equity Incentive Plans      
Shares issuable 854,321    
Out-of-the-money options | Common Stock | 2016 Plan | Maximum      
Equity Incentive Plans      
Additional shares issuable 103,023