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Long Term Debt (Tables) - Long-term debt (Details) (USD $) | Feb. 28, 2015 | Feb. 28, 2014
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Long-term debt | $ 1,477,921 us-gaap_LongTermDebt | $ 1,670,524 us-gaap_LongTermDebt
Due within one year | 158,184 us-gaap_LongTermDebtCurrent | 191,466 us-gaap_LongTermDebtCurrent
Due after one year | 1,319,737 us-gaap_LongTermDebtNoncurrent | 1,479,058 us-gaap_LongTermDebtNoncurrent
Equipment loan, bank, collateralized by related office equipment, payable by monthly installments of principal and interest of $5,158 through June 2015. Interest rate 2.12%. 48 month term. |  |
Long-term debt | 20,542 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember | 81,164 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_NotesPayableToBanksMember
Note payable, bank, collateralized by land and buildings, payable in monthly installments of principal and interest of $16,358 through January 2024. Interest rate 4.15%. 10 year term. |  |
Long-term debt | $ 1,457,379 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = SOTK_NotesPayableToBanksTwoMember | $ 1,589,360 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = SOTK_NotesPayableToBanksTwoMember

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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 + Details
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Period Type: | instant

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- Definition Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Details
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