| Component: (Network and Table) | |
|---|---|
| Network | 00500 - Statement - Consolidated Statements of Cash Flows (http://www.supernus.com/role/StatementConsolidatedStatementsOfCashFlows)  | 
| Table | (Implied) | 
| Reporting Entity [Axis] | 0001356576 (http://www.sec.gov/CIK) | 
| Consolidated Statements of Cash Flows | Period [Axis] | ||
|---|---|---|---|
2016-01-01 - 2016-12-31  | 2015-01-01 - 2015-12-31  | 2014-01-01 - 2014-12-31  | |
Consolidated Statements of Cash Flows  | |||
Cash flows from operating activities  | |||
Net income (loss)  | 91,221,000    | 13,944,000    | (10,925,000)   | 
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:  | |||
Loss on extinguishment of debt  | 671,000    | 2,338,000    | 2,592,000    | 
Change in fair value of derivative liability  | (  | (  | (  | 
Unrealized loss on marketable securities  | (  | ||
Depreciation and amortization  | |||
Amortization of deferred financing costs and debt discount  | |||
Noncash interest expense on nonrecourse liability related to sale of future royalties  | 4,548,000    | 3,541,000    | 658,000    | 
Non-cash royalty revenue  | (  | (  | (  | 
Share-based compensation expense  | |||
Deferred income tax benefit  | (  | ||
Changes in operating assets and liabilities:  | |||
Accounts receivable  | (  | (  | (  | 
Inventories  | (  | (  | |
Prepaid expenses and other assets  | (  | (  | |
Accounts payable  | (  | ||
Accrued sales deductions  | |||
Accrued expenses  | |||
Deferred product revenue, net  | (  | ||
Deferred licensing revenue  | (  | ||
Other non-current liabilities  | (  | ||
Net cash provided by (used in) operating activities  | (  | ||
Cash flows from investing activities  | |||
Purchases of marketable securities  | (  | (  | (  | 
Sales and maturities of marketable securities  | |||
Purchases of property and equipment  | (  | (  | (  | 
Deferred legal fees  | (  | (  | (  | 
Net cash used in investing activities  | (  | (  | (  | 
Cash flows from financing activities  | |||
Proceeds from issuance of common stock  | |||
Cash settlement of debt to equity conversion  | (  | ||
Proceeds from sale of future royalties  | |||
Net cash provided by financing activities  | |||
Net change in cash and cash equivalents  | (  | ||
Cash and cash equivalents at beginning of year  | 33,498,000    | ||
Cash and cash equivalents at end of year  | 66,398,000    | 33,498,000    | 36,396,000    | 
Supplemental cash flow information:  | |||
Cash paid for interest  | |||
Noncash financial activity:  | |||
Conversion of convertible notes and interest make-whole  | |||
Exercise of warrants  | |||
Deferred legal fees included in accounts payable and accrued expenses  | |||