| Component: (Network and Table) | |
|---|---|
| Network | 00500 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (http://gsitechnology.com/role/StatementConsolidatedStatementsOfCashFlows)  | 
| Table | (Implied) | 
| Reporting Entity [Axis] | 0001126741 (http://www.sec.gov/CIK) | 
| Statement of Cash Flows [Abstract] | Period [Axis] | ||
|---|---|---|---|
2015-04-01 - 2016-03-31  | 2014-04-01 - 2015-03-31  | 2013-04-01 - 2014-03-31  | |
Statement of Cash Flows [Abstract]  | |||
Cash flows from operating activities:  | |||
Net loss  | (  | (  | (  | 
Adjustments to reconcile net loss to net cash provided by operating activities:  | |||
Allowance for sales returns, doubtful accounts and other  | (  | (  | (  | 
Provision for excess and obsolete inventories  | |||
Depreciation and amortization  | |||
Stock-based compensation  | |||
Deferred income taxes  | |||
Windfall tax benefits from stock options exercised  | 33,000    | ||
Amortization of bond premium on investment  | |||
Changes in assets and liabilities, net of impact of acquisition:  | |||
Accounts receivable  | (  | ||
Inventory  | (  | ||
Prepaid expenses and other assets  | |||
Accounts payable  | (  | (  | |
Accrued expenses and other liabilities  | (  | (  | |
Deferred revenue  | (  | (  | |
Net cash provided by operating activities  | |||
Cash flows from investing activities:  | |||
Purchase of investments  | (  | (  | (  | 
Sales and maturities of investments  | |||
Acquisition  | (  | ||
Restricted cash  | (  | ||
Purchases of property and equipment  | (  | (  | (  | 
Net cash provided by (used in) investing activities  | (  | ||
Cash flows from financing activities:  | |||
Repurchase of common stock  | (  | (  | (  | 
Windfall tax benefits from stock options exercised  | (  | ||
Proceeds from issuance of common stock under employee stock plans  | |||
Net cash provided by (used in) financing activities  | (  | (  | |
Net increase (decrease) in cash and cash equivalents  | (  | (  | |
Cash and cash equivalents at beginning of the year  | 36,776,000    | ||
Cash and cash equivalents at end of the period  | 31,963,000    | 36,776,000    | 41,520,000    | 
Non-cash financing activities:  | |||
Purchases of property and equipment through accounts payable and accruals  | |||
Supplemental cash flow information:  | |||
Net cash paid (received) for income taxes  | (  | ||