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Note 8 - Commitments and Contingencies (Tables) | 6 Months Ended | 12 Months Ended
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Jun. 30, 2012 | Dec. 31, 2012
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block] |
Year of Payment |  | Amount |
2013 |  | $ | 629 |
2014 |  |  | 343 |
2015 |  |  | 294 |
2016 |  |  | 290 |
2017 |  |  | 290 |
Thereafter |  |  | 580 |
Total |  | $ | 2,426 |
Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block] |  |
Year of Payment |  | Amount |
2013 |  | $ | 145 |
2014 |  |  | 145 |
2015 |  |  | 155 |
2016 |  |  | 155 |
2017 |  |  | 155 |
Thereafter |  |  | 310 |
Total |  | $ | 1,065 |
Schedule of Product Warranty Liability [Table Text Block] |  |
|  | 2012 |  |  | 2011 |  |  | 2010 |
Aggregate product warranty liability at beginning of year |  | $ | 313 |  |  | $ | 215 |  |  | $ | 199 |
Net aggregate expense related to product warranties |  |  | 1,208 |  |  |  | 650 |  |  |  | 170 |
Aggregate reductions for payments |  |  | (745 | ) |  |  | (552 | ) |  |  | (154 | )
Aggregate product warranty liability at end of year |  | $ | 776 |  |  | $ | 313 |  |  | $ | 215 |

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- Definition Tabular disclosure of future minimum lease payments as of the date of the latest balance sheet presented, in aggregate and for each of the five years succeeding fiscal years, with separate deductions from the total for the amount representing executor costs, including any profit thereon, included in the minimum lease payments and for the amount of the imputed interest necessary to reduce the net minimum lease payments to present value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
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- Definition Tabular disclosure of future minimum payments required in the aggregate and for each of the five succeeding fiscal years for operating leases having initial or remaining noncancelable lease terms in excess of one year and the total minimum rentals to be received in the future under noncancelable subleases as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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- Definition Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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