CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
CURRENT ASSETS
Cash and cash equivalents	$ 339,881	$ 72,560
Restricted and short-term bank deposits	2,315mbly_RestrictedAndShortTermBankDeposits	5,084mbly_RestrictedAndShortTermBankDeposits
Marketable securities	32,895	46,718
Trade accounts receivables, net	15,806us-gaap_AccountsReceivableNetCurrent	12,490us-gaap_AccountsReceivableNetCurrent
Inventories	17,626us-gaap_InventoryNet	11,354us-gaap_InventoryNet
Other current assets	9,820us-gaap_OtherAssetsCurrent	7,025us-gaap_OtherAssetsCurrent
TOTAL CURRENT ASSETS	418,343us-gaap_AssetsCurrent	155,231us-gaap_AssetsCurrent
LONG-TERM ASSETS
Property and equipment, net	8,787us-gaap_PropertyPlantAndEquipmentNet	5,697us-gaap_PropertyPlantAndEquipmentNet
Funds in respect of employee rights upon retirement	7,969	6,962
Other assets	1,307us-gaap_OtherAssetsNoncurrent	338us-gaap_OtherAssetsNoncurrent
TOTAL LONG-TERM ASSETS	18,063us-gaap_AssetsNoncurrent	12,997us-gaap_AssetsNoncurrent
TOTAL ASSETS	436,406us-gaap_Assets	168,228us-gaap_Assets
CURRENT LIABILITIES
Accounts payable and accrued expenses	17,870	11,096
Employee related accrued expenses	3,961	3,338
Other current liabilities	5,739us-gaap_OtherLiabilitiesCurrent	1,441us-gaap_OtherLiabilitiesCurrent
TOTAL CURRENT LIABILITIES	27,570us-gaap_LiabilitiesCurrent	15,875us-gaap_LiabilitiesCurrent
LONG TERM LIABILITIES
Liability in respect of employee rights upon retirement	9,350	8,313
Long term liabilities	4,812us-gaap_OtherLiabilitiesNoncurrent	1,402us-gaap_OtherLiabilitiesNoncurrent
TOTAL LONG TERM LIABILITIES	14,162us-gaap_LiabilitiesNoncurrent	9,715us-gaap_LiabilitiesNoncurrent
COMMITMENTS AND CONTINGENT LIABILITIES (Note 7)
TOTAL LIABILITIES	41,732us-gaap_Liabilities	25,590us-gaap_Liabilities
SHAREHOLDERS' EQUITY
Ordinary shares	2,511us-gaap_CommonStockValue
Additional paid-in capital	523,315	240,563
Accumulated other comprehensive income (loss)	(181)	612
Accumulated deficit	(130,971)	(100,887)
TOTAL SHAREHOLDERS' EQUITY	394,674us-gaap_StockholdersEquity	142,638us-gaap_StockholdersEquity
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	436,406	168,228
Class B Ordinary shares
SHAREHOLDERS' EQUITY
Ordinary shares		75
Class C Ordinary shares
SHAREHOLDERS' EQUITY
Ordinary shares		35
Class D Ordinary shares
SHAREHOLDERS' EQUITY
Ordinary shares		415
Class E Ordinary shares
SHAREHOLDERS' EQUITY
Ordinary shares		155
Class F1 Ordinary shares
SHAREHOLDERS' EQUITY
Ordinary shares		165
Class F2 Ordinary shares
SHAREHOLDERS' EQUITY
Ordinary shares		480
Class A Ordinary shares
SHAREHOLDERS' EQUITY
Ordinary shares		345
Ordinary shares (with liquidation preferences)
SHAREHOLDERS' EQUITY
Ordinary shares		$ 680

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