CONDENSED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Jun. 30, 2020
Current assets:
Cash and cash equivalents	$ 9,745	$ 12,331
Short-term investments	154,879	170,299
Total cash, cash equivalents and short-term investments	164,624	182,630
Receivable for foreign tax withholding		20,420
Prepaid expenses and other current assets	11,937	5,594
Total current assets	176,561	208,644
Operating lease right-of-use asset	7,992
Property and equipment, net	1,569	1,084
Total assets	186,122	209,728
Current liabilities:
Accounts payable	5,571	2,437
Accrued liabilities	7,762	6,090
Deferred revenue	19,143	14,777
Operating lease liability	900
Total current liabilities	33,376	23,304
Deferred revenue, long-term	70,734	67,723
Operating lease liability, long-term	7,608
Warrant liability	29,442	40,483
Total liabilities	141,160	131,510
Commitments and contingencies (Note 6)
Stockholders' equity:
Preferred stock, $0.01 par value; 100 shares authorized; none outstanding
Common stock, $0.00000002 par value; 226,000 shares authorized; 112,528 and 111,514 shares issued and outstanding at December 31, 2020 and June 30, 2020, respectively
Additional paid-in capital	367,055	355,452
Accumulated deficit	(322,093)	(277,234)
Total stockholders' equity	44,962	78,218
Total liabilities and stockholders' equity	$ 186,122	$ 209,728

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).