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STOCK-BASED COMPENSATION PLANS (Details)		12 Months Ended
		Dec. 31, 2015 USD ($) Plan $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of compensation plans | Plan		3
Shares available for grant under 2014 LTIP Plan (in shares)		1,083,834
Weighted-Average Exercise Price [Roll Forward]
Intrinsic value of exercised options and stock-settled appreciation rights | $		$ 457,000	$ 184,000	$ 1,312,000
Total compensation cost related to unvested equity awards | $		$ 4,509,000
Weighted-average period of recognition of cost		2 years 2 months 12 days
Restricted Stock Award [Member]
Shares or Units and Rights [Roll Forward]
Outstanding, beginning balance (in shares)		321,322	437,000	555,925
Granted (in shares)		176,135	146,748	162,150
Exercised or restrictions lapsed (in shares)	[1]	(147,595)	(235,925)	(277,975)
Forfeited or expired (in shares)		(5,372)	(26,501)	(3,100)
Restricted units expected to vest (in shares)		344,490
Outstanding, ending balance (in shares)		344,490	321,322	437,000
Weighted-Average Award Price [Roll Forward]
Outstanding, beginning balance (in dollars per share) | $ / shares		$ 20.49	$ 14.46	$ 12.28
Granted (in dollars per share) | $ / shares		23.97	28.72	18.15
Exercised or restrictions lapsed (in dollars per share) | $ / shares	[1]	18.94	14.01	12.24
Forfeited or expired (in dollars per share) | $ / shares		24.84	24.28	15.00
Restricted units expected to vest (in dollars per share) | $ / shares		22.87
Outstanding, ending balance (in dollars per share) | $ / shares		$ 22.87	$ 20.49	$ 14.46
Weighted-Average Exercise Price [Roll Forward]
Aggregate intrinsic value of outstanding awards | $		$ 7,386,000
Fair value of vested restricted common stock | $		$ 3,097,000	$ 5,985,000	$ 6,308,000
Period of restrictions over awards		4 years
Performance period		1 year
Vesting period of Cliff from grant date		3 years
Compensation expense | $		$ 4,033,000	3,319,000	3,323,000
Tax benefit recognized related to all awards | $		$ 1,533,000	$ 1,261,000	$ 1,263,000
Stock-Settled Appreciation Rights [Member]
Shares or Units and Rights [Roll Forward]
Outstanding, beginning balance (in shares)		129,975	149,700	121,749
Granted (in shares)		0	0	112,000
Exercised or restrictions lapsed (in shares)	[1]	(29,100)	(13,725)	(84,049)
Forfeited or expired (in shares)		0	(6,000)	0
Outstanding, ending balance (in shares)		100,875	129,975	149,700
Exercisable, ending balance (in shares)		48,875	51,975	37,700
Weighted-Average Award Price [Roll Forward]
Outstanding, beginning balance (in dollars per share) | $ / shares		$ 16.04	$ 15.78	$ 8.85
Granted (in dollars per share) | $ / shares		0	0	18.14
Exercised or restrictions lapsed (in dollars per share) | $ / shares	[1]	8.74	12.30	8.90
Forfeited or expired (in dollars per share) | $ / shares			18.14	0
Outstanding, ending balance (in dollars per share) | $ / shares		18.14	16.04	15.78
Exercisable, ending balance (in dollars per share) | $ / shares		$ 18.14	$ 12.88	$ 8.76
Weighted-Average Exercise Price [Roll Forward]
Aggregate intrinsic value of vested awards | $		$ 161,000
Aggregate intrinsic value of outstanding awards | $		$ 333,000
Options [Member]
Shares [Roll Forward]
Outstanding, beginning balance (in shares)		0	0	50,000
Granted (in shares)				0
Exercised or restrictions lapsed (in shares)	[1]			(48,000)
Forfeited or expired (in shares)				(2,000)
Outstanding, ending balance (in shares)		0	0	0
Exercisable, ending balance (in share)			0	0
Weighted-Average Exercise Price [Roll Forward]
Outstanding, beginning balance (in dollars per share) | $ / shares		$ 0	$ 0	$ 20.56
Granted (in dollars per share) | $ / shares				0
Exercised or restrictions lapsed (in dollars per share) | $ / shares	[1]			20.75
Forfeited or expired (in dollars per share) | $ / shares				15.90
Outstanding, ending balance (in dollars per share) | $ / shares		$ 0	0	0
Exercisable, ending balance (in dollars per share) | $ / shares			$ 0	$ 0
[1] The total intrinsic value of options and stock-settled appreciation rights exercised was approximately $457,000, $184,000 and $1,312,000 in 2015, 2014 and 2013, respectively.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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No definition available.

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No definition available.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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