Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_LineOfCreditFacilityExpirationPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Note 15 - Subsequent Events (Details Textual) - American AgCredit, PCA [Member] - USD ($)		3 Months Ended								12 Months Ended
	Jul. 13, 2017	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2017
Minimum Consolidated EBITDA Required by Credit Agreement								$ 2,000,000	$ 2,500,000
Scenario, Forecast [Member]
Minimum Consolidated Tangible Net Worth by Credit Agreement										$ 49,000,000
Minimum Consolidated EBITDA Required by Credit Agreement		$ 3,000,000	$ 2,750,000	$ 2,750,000	$ 2,750,000	$ 2,750,000	$ 2,250,000
Revolving Credit Facility [Member] \| Subsequent Event [Member]
Line of Credit Facility, Expiration Period	3 years