SHAREHOLDERS' EQUITY (Details)		12 Months Ended
		Dec. 31, 2016 USD ($) Administrator $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013 USD ($) $ / shares shares
Fair value assumptions [Abstract]
Expected life	[1]	3 years 3 months 18 days	3 years 3 months 18 days	4 years 6 months
Risk-free interest rate	[2]	1.21%	1.00%	1.45%
Expected volatility	[3]	39.00%	35.00%	35.00%
Expected dividend yield		7.81%	6.93%	6.05%
Expected forfeiture	[4]	27.00%	27.00%	18.32%
Options outstanding [Roll Forward]
Outstanding, beginning (in shares) | shares		455,666	586,833	482,833
Granted (in shares) | shares		95,000	11,000	210,000
Exercised (in shares) | shares			(6,667)	(10,000)
Canceled (in shares) | shares		(85,000)	(135,500)	(96,000)
Outstanding, ending (in shares) | shares		465,666	455,666	586,833	482,833
Exercisable (in shares) | shares		338,415	307,672	322,834
Options weighted average exercise price [Roll Forward]
Outstanding, beginning (in dollars per share)		$ 16.82	$ 17.36	$ 18.48
Granted (in dollars per share)		10.11	12.69	14.75
Exercised (in dollars per share)			11.50	10.75
Canceled (in dollars per share)		14.18	18.83	18.30
Outstanding, ending (in dollars per share)		15.94	16.82	17.36	$ 18.48
Exercisable (in dollars per share)		$ 17.34	$ 17.79	$ 18.89
Options, additional disclosures [Abstract]
Outstanding, weighted average remaining contractual term		3 years 7 months 6 days	4 years 2 months 12 days	4 years 2 months 12 days	3 years 10 months 24 days
Outstanding, aggregate intrinsic value | $		$ 654,000	$ 0	$ 197,000	$ 214,000
Exercisable, weighted average remaining contractual term		2 years 10 months 24 days	3 years 4 months 24 days	2 years 4 months 24 days
Exercisable, aggregate intrinsic value | $		$ 157,000	$ 0	$ 23,000
Income tax effect | $			$ (4,638)	$ 11,211
Minimum [Member]
Range of Exercise Prices [Abstract]
Outstanding, beginning of period (in dollars per share)		$ 12.55	$ 11.50	$ 10.75
Granted (in dollars per share)		10.04	12.64	12.55
Exercised (in dollars per share)			11.50	10.75
Canceled (in dollars per share)		10.04	12.55	16.50
Outstanding, end of period (in dollars per share)		10.04	12.55	11.50	$ 10.75
Exercisable (in dollars per share)		12.55	12.55	11.50
Maximum [Member]
Range of Exercise Prices [Abstract]
Outstanding, beginning of period (in dollars per share)		19.75	21.00	21.85
Granted (in dollars per share)		11.11	12.74	17.80
Exercised (in dollars per share)			11.50	10.75
Canceled (in dollars per share)		19.75	21.00	21.85
Outstanding, end of period (in dollars per share)		19.75	19.75	21.00	$ 21.85
Exercisable (in dollars per share)		$ 19.75	19.75	21.00
2005 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested options (in shares) | shares		338,415
Unvested options (in shares) | shares		56,251
Options, additional disclosures [Abstract]
Weighted average grant date fair value of options (in dollars per share)		$ 1.74	$ 1.81	$ 2.47
Net cash proceeds from the exercise of stock options | $			$ 8,000	$ 64,500
Income tax effect | $			(5,000)	11,000
Intrinsic value | $			$ 11,000	$ 67,000
Total unrecognized compensation expense | $		$ 135,000
Weighted average period for recognition		1 year 11 months 12 days
2015 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance (in shares) | shares		129,000
Minimum number of plan administrators | Administrator		2
Unvested options (in shares) | shares		71,000
Maximum number of shares of common stock that can be delivered under the plan (in shares) | shares		200,000

[1] The expected life, in years, of stock options is estimated based on historical experience.

[2] The risk-free interest rate is based on U.S. Treasury bills whose term is consistent with the expected life of the stock options.

[3] The expected volatility is estimated based on historical and current stock price data for the Company.

[4] Forfeitures are estimated based on historical experience.