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Commitments and contingencies (Tables) | 12 Months Ended
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Dec. 31, 2012
Future minimum annual capital and operating lease payments | Future minimum rental commitments under capital and operating leases for years ending December 31 are as follows:
|  |  | Capital |  |  | Operating
|  |  | leases |  |  | leases
2013 |  | $ | 62,000 |  | $ | 642,000
2014 |  |  | 21,000 |  |  | -
2015 |  |  | - |  |  | -
2016 |  |  | - |  |  | -
2017 |  |  | - |  |  | -
Thereafter |  |  | - |  |  | -
Total minimum lease payments |  |  | 83,000 |  | $ | 642,000
Less: Amount representing interest |  |  | (15,000) |  |  |
Present value of capital lease obligations |  |  | 68,000 |  |  |
Less: Current portion |  |  | (48,000) |  |  |
Long-term obligation at December 31, 2012 |  | $ | 20,000 |  |  |

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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 -Topic 840 -SubTopic 20 -Publisher FASB -Number -Article -Subparagraph -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41502-112717 + Details
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Namespace Prefix: | us-gaap_
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