| Component: (Network and Table) | |
|---|---|
| Network | 00400 - Statement - STATEMENTS OF CASH FLOWS (http://www.iderapharma.com/role/StatementStatementsOfCashFlows)  | 
| Table | (Implied) | 
| Reporting Entity [Axis] | 0000861838 (http://www.sec.gov/CIK) | 
| STATEMENTS OF CASH FLOWS | Period [Axis] | ||
|---|---|---|---|
2016-01-01 - 2016-12-31  | 2015-01-01 - 2015-12-31  | 2014-01-01 - 2014-12-31  | |
STATEMENTS OF CASH FLOWS  | |||
Cash Flows from Operating Activities:  | |||
Net loss  | (38,389,000)   | (48,555,000)   | (38,642,000)   | 
Adjustments to reconcile net loss to net cash used in operating activities:  | |||
Loss from disposition of assets  | |||
Non-employee stock option expense  | |||
Stock-based compensation  | |||
Issuance of common stock for services rendered  | |||
Accretion of premiums and discounts on investments  | |||
Depreciation and amortization expense  | |||
Changes in operating assets and liabilities:  | |||
Prepaid expenses and other current assets  | (  | (  | |
Accounts payable, accrued expenses, and other liabilities  | (  | ||
Deferred revenue  | (  | ||
Net cash used in operating activities  | (  | (  | (  | 
Cash Flows from Investing Activities:  | |||
Purchases of available-for-sale securities  | (  | (  | (  | 
Proceeds from maturity of available-for-sale securities  | |||
Proceeds from sale of available-for-sale securities  | |||
Purchases of property and equipment  | (  | (  | (  | 
Net cash provided by (used in) investing activities  | (  | (  | |
Cash Flows from Financing Activities:  | |||
Sale of common stock and warrants, net of issuance costs  | |||
Proceeds from issuance of note payable  | |||
Proceeds from exercise of common stock warrants and options and employee stock purchases  | |||
Dividends paid  | (  | ||
Payments on note payable  | (  | (  | |
Payments on capital lease  | (  | (  | (  | 
Net cash provided by financing activities  | |||
Net increase (decrease) in cash and cash equivalents  | (  | ||
Cash and cash equivalents, beginning of period  | 26,586,000    | ||
Cash and cash equivalents, end of period  | 80,667,000    | 26,586,000    | 19,971,000    |