BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Current assets:
Cash and cash equivalents	$ 12,331	$ 9,590
Short-term investments	170,299	64,899
Total cash, cash equivalents and short-term investments	182,630	74,489
Receivable for foreign tax withholding	20,420
Common stock proceeds receivable		5,274
Prepaid expenses and other current assets	5,594	2,435
Total current assets	208,644	82,198
Intangible assets, net		261
Property and equipment, net	1,084	204
Total assets	209,728	82,663
Current liabilities:
Accounts payable	2,437	4,787
Accrued liabilities	6,090	4,559
Deferred revenue	14,777	4,955
Total current liabilities	23,304	14,301
Deferred revenue, long-term	67,723	2,819
Warrant liability	40,483	17,613
Total liabilities	131,510	34,733
Commitments and contingencies (Note 10)
Stockholders' equity:
Preferred stock, $0.01 par value; 100 shares authorized; none outstanding
Common stock, $0.00000002 par value; 226,000 shares authorized; 111,514 and 73,545 shares issued and outstanding at June 30, 2020 and 2019, respectively.
Additional paid-in-capital	355,452	279,148
Accumulated deficit	(277,234)	(231,218)
Total stockholders' equity	78,218	47,930
Total liabilities and stockholders' equity	$ 209,728	$ 82,663

Receivable for foreign tax withholding.

No definition available.

Name:	meip_ReceivableForForeignTaxWithholding
Namespace Prefix:	meip_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).