CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2015	Mar. 31, 2014
Cash Flows From Operating Activities:
Net loss	$ (27,389)	$ (16,225)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	34	28
Amortization of deferred financing costs	617us-gaap_AmortizationOfFinancingCosts
Stock-based compensation expense	2,405us-gaap_ShareBasedCompensation	1,264us-gaap_ShareBasedCompensation
Accretion of discount/premium on available for sale securities	(13)	24
Change in fair value of derivative instruments-warrants	268us-gaap_UnrealizedGainLossOnDerivatives	(223)us-gaap_UnrealizedGainLossOnDerivatives
Changes in operating assets and liabilities:
Security deposit	(56)
Distribution of non-cash item - ContraVir net assets		84sgyp_DistributionOfNonCashItems
Accounts payable and accrued expenses	(2,952)	(3,011)
Prepaid expenses and other current assets	187	(1,860)
Accrued interest expense on Senior Convertible Debentures	3,750
Total Adjustments	4,240	(3,694)
Net Cash used in Operating Activities	(23,149)	(19,919)
Cash Flows From Investing Activities:
Net purchases of available-for-sale securities	(50,000)
Additions to property and equipment	(8)	(28)
Repayment on ContraVir loan receivable		455
Net Cash (used in) / provided by Investing Activities	(50,008)	427
Cash Flows From Financing Activities:
Proceeds of sale of common stock	5,558	22,606
Proceeds of sale of common stock - ContraVir		3,224
Fees and expenses - sale of common stock	(153)us-gaap_PaymentsOfStockIssuanceCosts	(639)us-gaap_PaymentsOfStockIssuanceCosts
Proceeds from exercise of stock options		36
Distribution associated with ContraVir Spinoff		(3,230)sgyp_DistributionSpinoffTransaction
Net Cash provided by Financing Activities	5,405	21,997
Net (decrease) / increase in cash and cash equivalents	(67,752)	2,505
Cash and cash equivalents at beginning of period	146,470	18,130
Cash and cash equivalents at end of period	78,718	20,635
Supplementary disclosure of cash flow information:
Cash paid for taxes	122us-gaap_IncomeTaxesPaid	30us-gaap_IncomeTaxesPaid
Supplementary disclosure of non-cash investing and financing activities:
Distribution of net assets of ContraVir		$ 84

Distribution of non-cash items.

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The cash outflow during the period associated with the spinoff of subsidiary.

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Distribution of net assets in non-cash investing or financing transactions.

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The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.

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The sum of adjustments which are added to or deducted from net income or loss, including the portion attributable to noncontrolling interest, to reflect cash provided by or used in operating activities, in accordance with the indirect cash flow method.

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Amount of noncash expense included in interest expense to issue debt and obtain financing associated with the related debt instruments. Alternate captions include noncash interest expense.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets.

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The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income.

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The increase (decrease) during the reporting period in the amounts payable to vendors for goods and services received and the amount of obligations and expenses incurred but not paid.

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The increase (decrease) during the reporting period in interest payable, which represents the amount owed to note holders, bond holders, and other parties for interest earned on loans or credit extended to the reporting entity.

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The increase (decrease) during the reporting period in the value of prepaid expenses and other assets not separately disclosed in the statement of cash flows, for example, deferred expenses, intangible assets, or income taxes.

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The increase (decrease) during the reporting period in security deposits.

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The increase (decrease) in cash associated with the entity's continuing operating, investing, and financing activities. While for technical reasons this element has no balance attribute, the default assumption is a debit balance consistent with its label.

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Amount of cash inflow (outflow) of financing activities, excluding discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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The net cash paid (received) associated with the acquisition or disposal of all investments, including securities and other assets.

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The cash outflow for cost incurred directly with the issuance of an equity security.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation.

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The cash inflow from the additional capital contribution to the entity.

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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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