Stock Compensation Plan (Details 1) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Schedule of change in stock options during the years
Outstanding at beginning of year, Shares				750,000
Outstanding at end of year, Shares	1,301,000	1,093,000	785,000	750,000
Options exercisable at end of year	962,000	701,000	691,000
Outstanding at beginning of year, Weighted Average Exercise Price				$ 12.03
Outstanding at end of year, Weighted Average Exercise Price	$ 10.34	$ 10.86	$ 11.71	$ 12.03
Employee Stock Option [Member]
Schedule of change in stock options during the years
Outstanding at beginning of year, Shares	1,093,000	785,000	750,000
Granted, Shares	339,000	392,000	94,000
Exercised, Shares	(23,000)	0	(4,000)
Expired, Shares	(108,000)	(84,000)	(55,000)
Outstanding at end of year, Shares	1,301,000	1,093,000	785,000
Options exercisable at end of year	962,000	701,000	691,000
Outstanding at beginning of year, Weighted Average Exercise Price	$ 10.86	$ 11.71	$ 12.03
Granted, Weighted Average Exercise Price	$ 9.85	$ 10.08	$ 11.29
Exercised, Weighted Average Exercise Price	$ 7.28	$ 0	$ 7.56
Expired, Weighted Average Exercise Price	$ 14.52	$ 15.51	$ 15.58
Weighted-average fair value of options granted during the year	$ 0.98	$ 1.42	$ 0.92
Outstanding at end of year, Weighted Average Exercise Price	$ 10.34	$ 10.86	$ 11.71