Quarterly report pursuant to Section 13 or 15(d)

New Accounting Standards Implemented (Details)

v3.8.0.1
New Accounting Standards Implemented (Details) - USD ($)
Mar. 31, 2018
Jan. 02, 2018
Dec. 31, 2017
Liabilities      
Current portion of deferred revenue $ 544,000 $ 2,612,000 $ 3,214,000
Total current liabilities 6,454,000 2,612,000 5,607,000
Deferred revenue, net of current portion 0 0 3,061,000
Total liabilities 6,454,000 5,005,000 8,668,000
Stockholders’ Equity      
Accumulated deficit (364,592,000) (356,129,000) (359,792,000)
Total stockholders' equity 169,199,000 $ 170,098,000 170,098,000
As Reported Under ASC 605      
Liabilities      
Current portion of deferred revenue 1,146,000   3,214,000
Total current liabilities 7,056,000   3,214,000
Deferred revenue, net of current portion 2,910,000   3,061,000
Total liabilities 9,966,000   8,668,000
Stockholders’ Equity      
Accumulated deficit (368,255,000)   (359,792,000)
Total stockholders' equity 165,536,000   170,098,000
Adjustments Due to ASC 606      
Liabilities      
Current portion of deferred revenue (602,000)   (602,000)
Total current liabilities (602,000)   (602,000)
Deferred revenue, net of current portion (2,910,000)   (3,061,000)
Total liabilities (3,512,000)   (3,663,000)
Stockholders’ Equity      
Accumulated deficit (3,663,000)   3,663,000
Total stockholders' equity $ 3,663,000   $ 0