XML 25 R18.htm IDEA: XBRL DOCUMENT v2.4.0.6

Earnings per Share (Narrative) (Details)	6 Months Ended
	Jun. 30, 2012 warrants
Earnings Per Share 1	6,099,550

X

- Definition

Earnings Per Share 1

+ References

No definition available.

+ Details

Name:	njmc_EarningsPerShareZeroFiveSevenFiveZeroklyZSLQTdJcD
Namespace Prefix:	njmc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration