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Note 8 - Preferred Stock | 12 Months Ended
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Dec. 31, 2018
Notes to Financial Statements |
Preferred Stock [Text Block] | 8. Preferred Stock SGRP's certificate of incorporation authorizes it to issue 3,000,000 shares of preferred stock with a par value of $0.01 per share (the "SGRP Preferred Stock"), which may have such preferences and priorities over the SGRP Common Stock and other rights, powers and privileges as the Company's Board of Directors may establish in its discretion from time to time. The Company has created and authorized the issuance of a maximum of 3,000,000 shares of Series A Preferred Stock pursuant to SGRP's Certificate of Designation of Series "A" Preferred Stock (the "SGRP Series A Preferred Stock"), which have dividend and liquidation preferences, have a cumulative dividend of 10% per year, are redeemable at the Company's option and are convertible at the holder's option (and without further consideration) on a one -to- one basis into SGRP Common Stock. The Company issued 554,402 of SGRP shares to affiliated retirement plans which were all converted into common shares in 2011 (including dividends earned thereon), leaving 2,445,598 shares of remaining authorized preferred stock. At December 31, 2018, no shares of SGRP Series A Preferred Stock were issued and outstanding.

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- Definition The entire disclosure for terms, amounts, nature of changes, rights and privileges, dividends, and other matters related to preferred stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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