EMPLOYEE STOCK OPTION PLANS (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Weighted-average assumptions used for options granted [Abstract]
Risk-free interest rate (in hundredths)	0.72%	0.90%	2.08%
Expected volatility (in hundredths)	106.00%	101.80%	100.90%
Dividend yield (in hundredths)	0.00%	0.00%	0.00%
Expected option term-in years	5 years	5 years	5 years
Period of treasury note considered for risk free interest rate	5 years	5 years	5 years
Period considered for volatility rate	5 years	5 years	5 years
Historical forfeiture rate of options, maximum (in hundredths)	1.00%
Options [Roll Forward]
Outstanding at beginning of period (in shares)	495,517	695,000	780,333
Granted (in shares)	46,402	40,517	80,000
Exercised (in shares)	(45,000)	(240,000)	(165,333)
Forfeited/Expired (in shares)	(35,000)
Outstanding at end of period (in shares)	461,919	495,517	695,000	780,333
Vested at December 31, 2011 (in shares)	461,919
Weighted average Exercise Price [Abstract]
Outstanding at beginning of period (in dollars per share)	$ 9.33	$ 8.33	$ 6.68
Granted (in dollars per share)	$ 10.64	$ 11.87	$ 14.90
Exercised (in dollars per share)	$ 6.70	$ 6.85	$ 3.72
Forfeited/Expired (in dollars per share)	$ 8.20
Outstanding at end of period (in dollars per share)	$ 9.80	$ 9.33	$ 8.33	$ 6.68
Vested at December 31, 2011 (in dollars per share)	$ 9.80
Weighted average remaining contractual term [Abstract]
Outstanding	2 years 3 months 11 days	2 years 8 months 23 days	2 years 7 months 28 days	2 years 11 months 1 day
Vested at December 31, 2011	2 years 3 months 11 days
Aggregate Intrinsic Value [Abstract]
Outstanding and expected to vest, at end of period	$ 2,471,917
Vested at December 31, 2011	2,471,917
Weighted-average fair value of each option granted (in dollars per share)	$ 8.17	$ 8.91	$ 11.24
Unrecognized compensation cost related to non-vested stock option awards	0	0	21,687
Fair market value of common stock upon exercise of options		0	159,000
Tax Benefit from Stock Options Exercised	27,000	313,000	438,000
Intrinsic value of options exercised	266,000	1,337,000	1,609,000
Fair value of options vested	2,472,000	859,000	2,625,000
Non-Employee Director [Member]
Aggregate Intrinsic Value [Abstract]
Stock options, maximum contractual term	5 years
Employees [Member]
Aggregate Intrinsic Value [Abstract]
Stock options, maximum contractual term	10 years
Stock options, vesting period	3 years
Issue of Stock for Noncash Consideration [Member]
Aggregate Intrinsic Value [Abstract]
Exchange of common stock upon exercise of stock options (in shares)	26,601
Fair market value of common stock upon exercise of options	303,064
Issue of Stock for Cash and Noncash Consideration [Member]
Options [Roll Forward]
Exercised (in shares)		(25,000)
Aggregate Intrinsic Value [Abstract]
Proceeds from stock options exercised		102,815
Exchange of common stock upon exercise of stock options (in shares)		4,333
Fair market value of common stock upon exercise of options		69,930
Issue of Stock for Noncash Consideration 2 [Member]
Options [Roll Forward]
Exercised (in shares)		(10,000)
Aggregate Intrinsic Value [Abstract]
Exchange of common stock upon exercise of stock options (in shares)		4,589
Fair market value of common stock upon exercise of options		69,095
Issue of Stock for Noncash Consideration 3 [Member]
Options [Roll Forward]
Exercised (in shares)		(25,000)
Aggregate Intrinsic Value [Abstract]
Exchange of common stock upon exercise of stock options (in shares)		20,935
Fair market value of common stock upon exercise of options		216,630
Stock Option Plan 1995 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-cash compensation expense	380,000	383,000	986,000
Tax benefit upon exercise of options	$ 266,000	$ 528,000	$ 547,000
Common shares reserved for issuance (in shares)	200,000
Options exercisable price as percentage of closing price granted to president and specific persons (in hundredths)	110.00%
Performance Equity Plan 1998 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for issuance (in shares)	463,334
Options exercisable price as percentage of closing price granted to president and specific persons (in hundredths)	110.00%
Performance Equity Plan 2000 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for issuance (in shares)	1,230,000
Options exercisable price as percentage of closing price granted to president and specific persons (in hundredths)	110.00%
Performance Equity Plan 2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for issuance (in shares)	500,000
Options exercisable price as percentage of closing price granted to president and specific persons (in hundredths)	110.00%
Percentage of voting stock considered for higher exercise price (in hundredths)	10.00%
Options available for grant (in shares)	218,480