Deferred Revenues	12 Months Ended
Dec. 31, 2018
Deferred Revenue Disclosure [Abstract]
Deferred Revenues	9. Deferred Revenues We primarily generate revenue through licensing arrangements of our intellectual property. Amounts received prior to satisfying the revenue recognition criteria are recorded as deferred revenue in the Company’s balance sheets. Amounts expected to be recognized as revenue within the 12 months following the balance sheet date are classified as current liabilities. Deferred revenue represents amounts received prior to revenue recognition. On October 3, 2017, CytRx entered into a Reimbursement Agreement with NantCell, Inc. whereby the Company agreed to reimburse them for payment obligations under certain of the contracts under the NantCell licensing agreement up to a maximum of $4.2 million plus one half of any amounts in excess thereof. Once all conditions of the agreement are met and no contingencies remain outstanding, the revenue will be recognized as licensing fee revenue. In 2017, CytRx recognized $6.9 million of deferred revenue from the NantCell licensing agreement. There was no deferred revenue in 2018.

Deferred Revenues

12 Months Ended

Dec. 31, 2018

Deferred Revenue Disclosure [Abstract]

9. Deferred Revenues

We primarily generate revenue through licensing arrangements of our intellectual property. Amounts received prior to satisfying the revenue recognition criteria are recorded as deferred revenue in the Company’s balance sheets. Amounts expected to be recognized as revenue within the 12 months following the balance sheet date are classified as current liabilities.

Deferred revenue represents amounts received prior to revenue recognition. On October 3, 2017, CytRx entered into a Reimbursement Agreement with NantCell, Inc. whereby the Company agreed to reimburse them for payment obligations under certain of the contracts under the NantCell licensing agreement up to a maximum of $4.2 million plus one half of any amounts in excess thereof. Once all conditions of the agreement are met and no contingencies remain outstanding, the revenue will be recognized as licensing fee revenue. In 2017, CytRx recognized $6.9 million of deferred revenue from the NantCell licensing agreement. There was no deferred revenue in 2018.