Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 54,106	$ 58,321
Marketable securities	148,471	173,345
Inventory	1,354	0
Prepaid expenses and other current assets	4,623	4,691
Trade receivables, net	32,173	24,929
Total current assets	240,727	261,286
Fixed assets, net	7,059	7,429
Deposits and other assets	859	630
Total assets	248,645	269,345
Current liabilities:
Accounts payable and accrued expenses	45,153	48,759
Other current liabilities	265	865
Total current liabilities	45,418	49,624
Deferred revenue - long-term	2,194	1,587
Long-term debt	99,895	98,216
Other long-term liabilities	311	335
Total liabilities	147,818	149,762
Stockholders’ equity:
Common stock, $0.001 par value. Authorized 125,000,000 shares; issued and outstanding 34,316,836 shares at March 31, 2017. Authorized 125,000,000 shares; issued and outstanding 34,169,410 shares at December 31, 2016	34	34
Additional paid-in capital	865,834	856,142
Accumulated other comprehensive loss	(876)	(1,485)
Accumulated deficit	(764,165)	(735,108)
Total stockholders’ equity	100,827	119,583
Total liabilities and stockholders’ equity	$ 248,645	$ 269,345