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SF        0000720672    
Filing Date Form Type Description Document
2017-08-16 UPLOAD View Document
2017-08-14 8-K 8-K View Document
2017-08-14 13F-HR View Document
2017-08-11 S-3 S-3 View Document
2017-08-11 8-K FORM 8-K View Document
2017-08-08 10-Q SF-Q2-20170630 View Document
2017-08-07 4 PRIMARY DOCUMENT View Document
2017-08-03 4 PRIMARY DOCUMENT View Document
2017-08-03 4 PRIMARY DOCUMENT View Document
2017-07-31 8-K SF_8K_20170731 View Document
2017-06-23 11-K 11-K View Document
2017-06-21 8-K 8-K View Document
2017-06-15 3 PRIMARY DOCUMENT View Document
2017-06-09 4 PRIMARY DOCUMENT View Document
2017-06-09 4 PRIMARY DOCUMENT View Document
2017-06-09 4 PRIMARY DOCUMENT View Document
2017-06-09 4 PRIMARY DOCUMENT View Document
2017-06-09 4 PRIMARY DOCUMENT View Document
2017-06-09 4 PRIMARY DOCUMENT View Document
2017-06-09 4 PRIMARY DOCUMENT View Document
2017-06-09 4 PRIMARY DOCUMENT View Document
2017-06-09 4 PRIMARY DOCUMENT View Document
2017-06-08 4 PRIMARY DOCUMENT View Document
2017-06-07 8-K 8-K View Document
2017-05-19 4 PRIMARY DOCUMENT View Document
2017-05-10 13F-HR View Document
2017-05-05 10-Q SF-Q1-20170331 View Document
2017-05-01 8-K SF_8K_20170427 View Document
2017-04-26 DEFA14A DEFA14A View Document
2017-04-26 DEF 14A DEF 14A View Document
2017-04-21 8-K SF_8K_20170421 View Document
2017-03-21 8-K SF_8K_20170321 View Document
2017-03-06 4 PRIMARY DOCUMENT View Document
2017-03-06 4 PRIMARY DOCUMENT View Document
2017-03-06 4 PRIMARY DOCUMENT View Document
2017-03-06 4 PRIMARY DOCUMENT View Document
2017-03-06 4 PRIMARY DOCUMENT View Document
2017-03-06 4 PRIMARY DOCUMENT View Document
2017-03-06 4 PRIMARY DOCUMENT View Document
2017-03-06 4 PRIMARY DOCUMENT View Document
2017-03-06 4 PRIMARY DOCUMENT View Document
2017-03-06 4 PRIMARY DOCUMENT View Document
2017-03-06 4 PRIMARY DOCUMENT View Document
2017-03-06 4 PRIMARY DOCUMENT View Document
2017-02-23 10-K SF-10K-20151231 View Document
2017-02-22 4 PRIMARY DOCUMENT View Document
2017-02-17 4 PRIMARY DOCUMENT View Document
2017-02-16 4 PRIMARY DOCUMENT View Document
2017-02-16 13F-HR View Document
2017-02-15 UPLOAD View Document
2017-02-14 5 PRIMARY DOCUMENT View Document
2017-02-14 5 PRIMARY DOCUMENT View Document
2017-02-14 5 PRIMARY DOCUMENT View Document
2017-02-14 3/A PRIMARY DOCUMENT View Document
2017-02-13 8-K FORM 8-K View Document
2017-02-10 4 PRIMARY DOCUMENT View Document
2017-02-10 4 PRIMARY DOCUMENT View Document
2017-02-10 SC 13G/A View Document
2017-01-31 8-K SF_8K_20170208 View Document
2017-01-17 8-K FORM 8-K View Document
2017-01-17 D View Document
2017-01-17 424B7 424B7 View Document
2017-01-09 SC 13G/A View Document
2017-01-06 4 PRIMARY DOCUMENT View Document
2017-01-06 5 PRIMARY DOCUMENT View Document
2017-01-06 5/A PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4/A PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2017-01-04 4 PRIMARY DOCUMENT View Document
2016-12-27 4 PRIMARY DOCUMENT View Document
2016-12-22 CORRESP View Document
2016-12-20 4 PRIMARY DOCUMENT View Document
2016-12-15 4 PRIMARY DOCUMENT View Document
2016-12-15 UPLOAD View Document
2016-12-14 4 PRIMARY DOCUMENT View Document
2016-12-09 4 PRIMARY DOCUMENT View Document
2016-12-08 8-K 8-K View Document
2016-12-07 8-K SF_8K_20161207 View Document
2016-12-05 4 PRIMARY DOCUMENT View Document
2016-12-01 4 PRIMARY DOCUMENT View Document
2016-11-23 4 PRIMARY DOCUMENT View Document
2016-11-23 4 PRIMARY DOCUMENT View Document

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