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Business combinations, Goodwill and Intangible assets - Additional Information (Detail) | 3 Months Ended | 6 Months Ended |  |
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Jun. 30, 2013 USD ($) | Jun. 30, 2012 USD ($) | Jun. 30, 2013 USD ($) | Jun. 30, 2012 USD ($) | Mar. 22, 2013 USD ($) | Mar. 22, 2013 ARS | Jun. 30, 2013 24-Months Period [Member] USD ($) | Jun. 30, 2013 36-Months Period [Member] USD ($)
Business Acquisition Actual Revenue And Pre Tax Income Loss [Line Items] |  |  |  |  |  |  |  |
Percentage of acquisition |  |  |  |  | 100.00% | 100.00% |  |
Business acquisition rights of buyer description |  |  | On such same date, the Buyer paid and agreed to pay the purchase price as follows i) $2,191,781 in cash; ii) set an escrow amounting to $489,237 for a 24-months period, aiming to cover unexpected liabilities and negative working capital; iii) set an escrow amounting to $547,945 for a 36-months period, aiming to continue the employment relationship of certain key employees; and iv) on June 24, 2013 the Company paid the remaining $225,534 net of certain negative working capital adjustments. |  |  |  |  |
Business acquisition, cash pay |  |  | $ 2,191,781 |  |  |  |  |
Escrow amount covering unexpected liabilities and negative working capital |  |  |  |  |  |  | 489,237 |
Escrow amount to continue employment relationship |  |  |  |  |  |  |  | 547,945
Business acquisition payment subject to collection of credits held by certain customer | 225,534 |  | 225,534 |  |  |  |  |
Total purchase price |  |  |  |  | 3,454,497 | 17,652,480 |  |
Escrow for employment relationship |  |  |  |  | 547,945 |  |  |
Net revenues |  |  | 500,255 |  |  |  |  |
Net income |  |  | 50,792 |  |  |  |  |
Total aggregate amortization expense for intangible assets | $ 216,587 | $ 194,313 | $ 437,446 | $ 462,476 |  |  |  |

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- Definition Business acquisition rights of buyer description. + References No definition available. + Details
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- Definition Business combination escrow deposits related to continue employment relationship of certain key employees. + References No definition available. + Details
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- Definition Business combination escrow deposits to cover unexpected liabilities and negative working capital. + References No definition available. + Details
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- Definition Net Income From Acquired Companies + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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