XML 18 R6.htm IDEA: XBRL DOCUMENT
v3.19.1

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Statement Of Stockholders Equity [Abstract] |  |
Issuance of common stock and warrants, issuance costs | $ 709 | $ 265

X
- Definition Stock and warrants issuance costs. + References No definition available. + Details
Name: | mosy_StockAndWarrantsIssuanceCosts
Namespace Prefix: | mosy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_StatementOfStockholdersEquityAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration