Schedule of 2003 Stock Option and Appreciation Rights Plan (Details) - shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, beginning of year	2,165,000	2,130,000
Options forfeited	0	(17,500)
Options expired	(40,000)	(47,500)
Options outstanding, end of year	2,175,000	2,165,000
2003 Stock Option and Appreciation Rights Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Options outstanding, beginning of year	1,210,000	1,275,000
Options forfeited	0	(17,500)
Options expired	(40,000)	(47,500)
Options outstanding, end of year	1,170,000	1,210,000