Condensed Consolidated Statements of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013
OPERATING ACTIVITIES:
Net income	$ 32,470		$ 10,195
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	165		52
Amortization of debt issuance costs	185		208
Amortization of lease incentive	(92)
Gain on extinguishment of debt	(35,999)
Stock-based compensation	462		478
Change in fair value of warrant liability	(894)		(28)
Changes in operating assets and liabilities:
Accounts receivable	725		500
Other receivables	1,007
Prepaid expenses and other current assets	(86)		(18)
Accounts payable	148		519
Accrued liabilities	(994)		(959)
Accrued compensation and related expense	318		(316)
Accrued royalties	95		(166)
Accrued interest	2,003		(101)
Deferred revenues	993
Net cash provided by operating activities	506		10,364
INVESTING ACTIVITIES:
Purchase of property and equipment	(282)		(30)
Decrease (increase) in short-term investments	5,000		(1)
Net cash provided by (used in) investing activities	4,718		(31)
FINANCING ACTIVITIES:
Payment of secured notes payable	(6,000)		(5,046)
Net cash used in financing activities	(6,000)		(5,046)
Net increase (decrease) in cash and cash equivalents	(776)		5,287
Cash and cash equivalents at beginning of period	3,251	[1]	1,323
Cash and cash equivalents at end of period	2,475		6,610
Supplemental disclosure of cash flow information:
Interest received	1		3
Interest paid	1,018		4,056
Income taxes paid	1		1
Non-cash investing activities - Lease incentive	201
Non-cash financing activities - Debt extinguishment	$ 36,047

[1] Derived from the Company's audited consolidated financial statements as of December 31, 2013.