EMPLOYEE BENEFIT PLANS, SHARE-BASED PAYMENT AWARDS (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Options Outstanding [Roll Forward]
Option exercised (in shares)		455,310		16,960		833,334
Stock Options [Member]
Options Outstanding [Roll Forward]
Options outstanding - beginning of period (in shares)		979,916	[1]	1,615,771	[1]	2,456,137
Options granted		0		0		0
Option exercised (in shares)		455,310		16,960		833,334
Options that expired prior to being exercised		59,360		618,895		7,032
Options outstanding - end of period (in shares)	[1]	465,246		979,916		1,615,771
Options Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted average exercise price of grants ( in dollars per share)		$ 0		$ 0		$ 0
Weighted average exercise price of exercised options (in dollars per share)		14.39		16.45		13.47
Weighted average exercise price of forfeited options in (dollars per share)		16.45		19.90		16.93
Weighted average exercise price of outstanding options - end of period (in dollars per share)		$ 14.87		$ 14.74		$ 16.74
Remaining options available for grant (in shares)		858,489		925,626		1,043,074
Vested options at end of period ( in shares)		465,246		960,641		1,563,493
Weighted average exercise price of vested options - end of period (in dollars per share)		$ 14.87		$ 14.73		$ 16.80
Cash received for option exercise cost		$ 6,549		$ 278		$ 11,228
Income tax benefit recognized		264		30		531
Compensation expense recognized		31		110		194
Remaining unrecognized compensation expense		$ 0		$ 31		$ 141
Weighted average remaining years for which compensation expense is to be recognized		0 years		3 months 18 days		1 year 2 months 12 days
Intrinsic value of options exercised during the period		$ 1,143		$ 6		$ 2,569
Weighted average fair value per option at the date of grant for stock options granted [Abstract]
Intrinsic value of outstanding options at period end		1,273		1,690		2,243
Intrinsic value of vested options at period end		1,273		1,674		2,129
Summary of Restricted Stock Awards [Roll Forward]
Income tax benefit recognized		$ 264		$ 30		$ 531
Weighted average remaining years for which compensation expense is to be recognized		0 years		3 months 18 days		1 year 2 months 12 days
Restricted Stock [Member]
Options Outstanding, Weighted Average Exercise Price [Roll Forward]
Income tax benefit recognized		$ 39		$ 41		$ 104
Weighted average remaining years for which compensation expense is to be recognized		1 year		1 year 2 months 12 days		1 year 2 months 12 days
Summary of Restricted Stock Awards [Roll Forward]
Unvested allocated shares - beginning of period (in shares)		289,660		318,314		328,003
Shares granted (in shares)		68,069		121,333		145,925
Shares vested (in shares)		132,377		141,361		155,614
Shares forfeited (in shares)		1,458		8,626		0
Unvested allocated shares - end of period (in shares)		223,894		289,660		318,314
Unallocated shares - end of period (in shares)		0		0		0
Compensation expense recognized		$ 1,855		$ 1,976		$ 2,011
Income tax benefit recognized		39		41		104
Fair value of shares vested during the period		$ 1,652		$ 2,266		$ 1,944
Weighted average remaining years for which compensation expense is to be recognized		1 year		1 year 2 months 12 days		1 year 2 months 12 days
Restricted Stock [Member] | Outside Directors [Member]
Restricted Stock Awards [Abstract]
Award vesting period		1 year
Restricted Stock [Member] | Certain Officers [Member]
Restricted Stock Awards [Abstract]
Award vesting period		4 years
Long Term Cash Incentive Payment Plan [Member]
Long Term Cash Incentive Payment Plan [Abstract]
Percentage of threshold target for each award eligible to be earned based on relative performance (in hundredths)		50.00%
Percentage of target for each award eligible to be earned based on relative performance (in hundredths)		100.00%
Percentage of maximum target for each award eligible to be earned based on relative performance (in hundredths)		150.00%
Measurement period goals related to Long Term Cash Incentive Payment Plan award payment		3 years
Liability for expected future cash -based long-term incentive payments		$ 1,802
Compensation expense recognized		$ 946		$ 467		$ 639

[1] At December 31, 2015, 2014 and 2013, respectively, expected forfeitures were immaterial.