v2.4.0.6

Note 10 - Revolving Credit Facility Financing Agreement (Detail) - Borrowings under the Credit Facility: (USD $) | Dec. 31, 2012 | Nov. 13, 2012
--- | --- | ---
Revolving Credit Facility | $ 5,311,000 | $ 4,700,000
Cash Securing Letters of Credit [Member] |  |
Revolving Credit Facility | 4,635,000 |
Borrowings Under The Credit Facility [Member] |  |
Revolving Credit Facility | 600,000 |
Interest Payable [Member] |  |
Revolving Credit Facility | $ 76,000 |

X
- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityAmountOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant