XML 32 R22.htm IDEA: XBRL DOCUMENT v2.4.0.6

Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Computation for earnings per share

		Three Months Ended March 31,
		2013				2012
Net income		$	5,330,733			$	4,611,353
Weighted average number of outstanding shares			3,197,476				3,030,834
Earnings per share		$	1.67			$	1.52

X

- Details

Name:	us-gaap_EarningsPerShareAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations.

+ References

No definition available.

+ Details

Name:	us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration