XML 42 R30.htm IDEA: XBRL DOCUMENT v3.10.0.1
Summary of Business and Significant Accounting Policies - Summary of Stock Option Assumptions (Details) - USD ($)
 3 Months Ended 6 Months Ended
Sep. 19, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Stock-based Compensation Expense          
Closing stock price (in dollars per share) $ 2.50        
Options granted during period   122,400 357,400 213,250 1,472,541
Options granted during period, weighted-average price (in dollars per share)   $ 3.94 $ 1.16 $ 5.29 $ 1.26
Total compensation cost, net of forfeitures, of all options granted but not yet vested   $ 1,700,000   $ 1,700,000  
Weighted average period over which unrecognized compensation is expected to be recognized       1 year 5 months 19 days  
Exercise of stock options (in shares)   14,967 34,899 216,253 138,049
Stock-based compensation assumptions          
Expected volatility   68.00% 59.00% 66.00% 57.00%
Average risk-free interest rate   2.88% 2.07% 2.85% 1.88%
Expected life (in years)   4 years 4 months 21 days 4 years 4 months 10 days 4 years 4 months 2 days 4 years 6 months 4 days
Dividend yield   0.00% 0.00% 0.00% 0.00%
Employee, Not Executive or Director | 2005 Management Stock Option Plan          
Stock-based Compensation Expense          
Modified exercise price approved for previously issued options with higher grant date exercise price (in dollars per share) $ 2.50        
Incremental stock-based compensation $ 445,000        
Incremental stock-based compensation recognized   $ 0 $ 373,000 $ 3,000 $ 414,000
Incremental stock-based compensation not yet recognized   $ 8,000 $ 31,000 $ 8,000 $ 31,000
Number of repriced shares 804,172        
Modified weighted-average fair value (in dollars per share) $ 1.19