In millions, except per share items | Mar-31-21 | Dec-31-20 | Sep-30-20 | Jun-30-20 | Mar-31-20 | Dec-31-19 | Sep-30-19 | Jun-30-19 |
| 10-Q | 10-K | 10-Q | 10-Q | 10-Q | 10-K | 10-Q | 10-Q |
Assets | | | | | | | | |
Current assets | | | | | | | | |
Cash and cash equivalents | 24.6 | 15.5 | 72.8 | 52.2 | 42.6 | 27.9 | 19.7 | 20.6 |
Marketable securities | 90.5 | 120.0 | 83.9 | 14.9 | 36.7 | 64.5 | 83.0 | 37.6 |
Accounts receivable | 1.0 | 0.5 | 0.2 | | | | | |
Inventory | 14.4 | 11.0 | 8.9 | | | | | |
Prepaid expenses and other current assets | 6.6 | 6.4 | 5.4 | 3.7 | 4.9 | 3.9 | 3.0 | 1.1 |
Total current assets | 137.0 | 153.4 | 171.3 | 70.8 | 84.1 | 96.3 | 105.7 | 59.3 |
Property and equipment, net | 0.5 | 0.5 | 0.6 | 0.6 | 0.6 | 0.3 | 0.2 | 0.1 |
Other assets | 1.7 | 1.9 | 2.4 | 2.5 | 2.0 | 2.2 | 1.0 | 1.3 |
Restricted cash | 20.3 | 20.6 | 20.3 | 20.0 | | | | |
Total assets | 159.5 | 176.3 | 194.6 | 94.0 | 86.7 | 98.8 | 106.9 | 60.6 |
|
Liabilities and Stockholders' Equity | | | | | | | | |
Current liabilities | | | | | | | | |
Accounts payable | 6.4 | 4.2 | 7.1 | 7.1 | 5.5 | 3.3 | 2.7 | 3.3 |
Accrued expenses | 10.3 | 11.9 | 10.3 | 8.1 | 7.2 | 7.6 | 6.6 | 5.4 |
Other current liabilities | 0.6 | 0.6 | 0.7 | 0.7 | 0.7 | 0.5 | 0.2 | 0.2 |
Total current liabilities | 17.3 | 16.7 | 18.1 | 15.9 | 13.4 | 11.4 | 9.5 | 8.8 |
Deferred royalty obligation | 73.4 | 63.5 | 63.5 | 24.6 | | | | |
Long-term liabilities | 6.2 | 4.3 | 2.5 | 1.4 | | 1.7 | | |
Total liabilities | 96.8 | 84.6 | 84.2 | 42.0 | 15.0 | 13.1 | 10.1 | 9.5 |
|
Commitments and contingencies (Note 11) | | | | | | | | |
Stockholders’ equity: | | | | | | | | |
Common stock | 0.6 | 0.6 | 0.6 | 0.4 | 0.4 | 0.4 | 0.4 | 0.3 |
|
Preferred stock, $0.01 par value; authorized 5,000,000 shares; none outstanding | | | | | | | | |
Additional paid-in capital | 440.4 | 438.9 | 437.7 | 361.0 | 359.6 | 358.2 | 357.2 | 304.0 |
|
Accumulated other comprehensive income | | | | | | | | |
Accumulated deficit | -378.3 | -347.7 | -327.9 | -309.4 | -288.3 | -272.9 | -260.9 | -253.2 |
Total stockholders’ equity | 62.7 | 91.8 | 110.3 | 52.0 | 71.7 | 85.8 | 96.7 | 51.1 |
Total liabilities and stockholders' equity | 159.5 | 176.3 | 194.6 | 94.0 | 86.7 | 98.8 | 106.9 | 60.6 |