Stock-Based Compensation (Details) | Jan. 16, 2015shares | Mar. 20, 2014shares | Dec. 31, 2015USD ($)$ / sharesshares | Dec. 31, 2014USD ($)shares | Sep. 30, 2015$ / sharesshares | Dec. 31, 2015USD ($)plan$ / sharesshares | Sep. 30, 2015USD ($)planshares |
Stock-based compensation | | | | | | | |
Number of plans | plan | | | | | | 3 | 3 |
Number of shares of common stock reserved under plan for issuance to employees | | | | | | 315,771 | 372,529 |
Stock-based compensation expense | $ | | | $ 778,000 | $ 688,000 | | | |
Restricted stock unit awards | | | | | | | |
Stock-based compensation | | | | | | | |
Vesting period | | | 4 years | | | | |
Shares granted (in shares) | | | 30,000 | 0 | | | |
Grant date fair value (in dollars per share) | $ / shares | | | $ 7.94 | | | | |
Unrecognized employee stock-based compensation expense, net of estimated forfeitures | $ | | | | | | $ 200,000 | |
Weighted-average period of recognition | | | 4 years 1 month 6 days | | | | |
2014 Plan | | | | | | | |
Stock-based compensation | | | | | | | |
Term of the plan | | 10 years | | | | | |
Number of shares of common stock reserved under plan for issuance to employees | | 1,000,000 | | | | | |
Maximum annual increase in number of shares issuable by the plan, as a percentage of shares outstanding as of the preceding December 31 | | 4.00% | | | | | |
Additional shares authorized | 722,834 | | | | | | |
Shares Available for Grant | | | | | | | |
Additional shares authorized | 722,834 | | | | | | |
Corium Plans | | | | | | | |
Stock-based compensation | | | | | | | |
Vesting period | | | 4 years | | | | |
Corium Plans | Maximum | | | | | | | |
Stock-based compensation | | | | | | | |
Term of the plan | | | 10 years | | | | |
Corium Plans | Stock options | | | | | | | |
Stock-based compensation | | | | | | | |
Options granted (in shares) | | | 593,200 | | | | |
Shares Available for Grant | | | | | | | |
Granted (in shares) | | | (593,200) | | | | |
Forfeited / Cancelled (in shares) | | | 44,196 | | | | |
Stock Options Outstanding | | | | | | | |
Balance at the beginning of the period (in shares) | | | 2,914,977 | | | | |
Granted (in shares) | | | 593,200 | | | | |
Exercised (in shares) | | | (1,664) | | | | |
Forfeited / Cancelled (in shares) | | | (44,196) | | | | |
Balance at the end of the period (in shares) | | | 3,462,317 | | 2,914,977 | | |
Options exercisable at the end of the period (in shares) | | | | | | 1,840,258 | |
Options vested and expected to vest at the end of the period (in shares) | | | | | | 3,300,208 | |
Weighted Average Exercise Price | | | | | | | |
Balance at the beginning of the period (in dollars per share) | $ / shares | | | $ 4.04 | | | | |
Granted (in dollars per share) | $ / shares | | | 7.81 | | | | |
Exercised (in dollars per share) | $ / shares | | | 5.31 | | | | |
Forfeited / Cancelled (in dollars per share) | $ / shares | | | 4.32 | | | | |
Balance at the end of the period (in dollars per share) | $ / shares | | | $ 4.68 | | $ 4.04 | | |
Options exercisable at the end of the period (in dollars per share) | $ / shares | | | | | | $ 3.04 | |
Options vested and expected to vest at the end of the period (in dollars per share) | $ / shares | | | | | | $ 4.56 | |
Weighted Average Remaining Contractual Life | | | | | | | |
Balance at the end of the period | | | 7 years 2 months 23 days | | 6 years 11 months 9 days | | |
Options exercisable at the end of the period | | | 5 years 8 months 9 days | | | | |
Options vested and expected to vest at the end of the period | | | 7 years 1 month 17 days | | | | |
Aggregate Intrinsic Value | | | | | | | |
Balance at the end of the period | $ | | | | | | $ 11,909,000 | $ 15,482,000 |
Options exercisable at the end of the period | $ | | | | | | 9,342,000 | |
Options vested and expected to vest at the end of the period | $ | | | | | | $ 11,763,000 | |
Additional disclosures | | | | | | | |
Exercise price, minimum(in dollars per share) | $ / shares | | | $ 2.12 | | | | |
Exercise price, maximum(in dollars per share) | $ / shares | | | $ 14.12 | | | | |
2014 Employee Stock Purchase Plan | | | | | | | |
Stock-based compensation | | | | | | | |
Term of the plan | | 10 years | | | | | |
Number of shares of common stock reserved under plan for issuance to employees | | | | | | 3,743,709 | 3,745,373 |
Shares of common stock available for grant | | | 830,396 | | 830,396 | 251,392 | 830,396 |
Maximum annual increase in number of shares issuable by the plan, as a percentage of shares outstanding as of the preceding December 31 | | 1.00% | | | | | |
Stock-based compensation expense | $ | | | $ 77,000 | $ 164,000 | | | |
Maximum number of shares to be issued over the term of the plan | | 4,000,000 | | | | | |
Shares issued during the period | | | 56,758 | 61,042 | | | |
Shares Available for Grant | | | | | | | |
Balance at the beginning of the period (in shares) | | | 830,396 | | | | |
Balance at the end of the period (in shares) | | | 251,392 | | 830,396 | | |