Computation of Basic and Diluted Earnings per Share Parentheticals (Details)	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Computation of Basic and Diluted Earnings per Share Parentheticals
Warrants were excluded from the calculation of diluted earning per share	0	528,000
Employee stock options excluded from calculation of diluted earnings per share	105,000	174,000

Warrants were excluded from the calculation of diluted earning per share

No definition available.

Name:	fil_EmployeeStockOptionsExcludedFromCalculationOfDilutedEarningsPerShare
Namespace Prefix:	fil_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration