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STOCK-BASED COMPENSATION PLANS (Details) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2016 USD ($) Plan $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares		Dec. 31, 2014 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)		938,000
Additional Disclosures [Abstract]
Total compensation cost related to unvested equity awards | $		$ 4,387
Weighted-average period of recognition of cost		2 years 3 months 18 days
Restricted Stock Award [Member]
Shares or Units and Rights [Roll Forward]
Outstanding, beginning balance (in shares)		344,490	321,322		437,000
Granted (in shares)		209,394	176,135		146,748
Restrictions lapsed or exercised (in shares)		(140,864)	(147,595)	[1]	(235,925)	[1]
Forfeited or expired (in shares)		(15,700)	(5,372)		(26,501)
Restricted units expected to vest (in shares)		397,320
Outstanding, ending balance (in shares)		397,320	344,490		321,322
Weighted-Average Award Price [Roll Forward]
Outstanding, beginning balance (in dollars per share) | $ / shares		$ 22.87	$ 20.49		$ 14.46
Granted (in dollars per share) | $ / shares		18.80	23.97		28.72
Restrictions lapsed or exercised (in dollars per share) | $ / shares		20.55	18.94	[1]	14.01	[1]
Forfeited or expired (in dollars per share) | $ / shares		20.45	24.84		24.28
Restricted units expected to vest (in dollars per share) | $ / shares		21.64
Outstanding, ending balance (in dollars per share) | $ / shares		$ 21.64	$ 22.87		$ 20.49
Additional Disclosures [Abstract]
Aggregate intrinsic value of outstanding awards | $		$ 9,416
Fair value of vested restricted common stock | $		$ 2,577	$ 3,097		$ 5,985
Vesting period of awards		4 years
Compensation expense | $		$ 3,872	4,033		3,319
Tax benefit recognized related to all awards | $		$ 1,471	$ 1,533		$ 1,261
Stock-Settled Appreciation Rights [Member]
Shares or Units and Rights [Roll Forward]
Outstanding, beginning balance (in shares)		100,875	129,975		149,700
Granted (in shares)		0	0		0
Restrictions lapsed or exercised (in shares)		0	(29,100)	[1]	(13,725)	[1]
Forfeited or expired (in shares)		0	0		(6,000)
Outstanding, ending balance (in shares)		100,875	100,875		129,975
Exercisable, ending balance (in shares)		74,875	48,875		51,975
Weighted-Average Award Price [Roll Forward]
Outstanding, beginning balance (in dollars per share) | $ / shares		$ 18.14	$ 16.04		$ 15.78
Granted (in dollars per share) | $ / shares			0		0
Restrictions lapsed or exercised (in dollars per share) | $ / shares	[1]		8.74		12.30
Forfeited or expired (in dollars per share) | $ / shares					18.14
Outstanding, ending balance (in dollars per share) | $ / shares		18.14	18.14		16.04
Exercisable, ending balance (in dollars per share) | $ / shares		$ 18.14	$ 18.14		$ 12.88
Additional Disclosures [Abstract]
Intrinsic value of awards exercised | $			$ 457		$ 184
Aggregate intrinsic value of vested awards | $		$ 416
Aggregate intrinsic value of outstanding awards | $		$ 561
Performance Units [Member]
Additional Disclosures [Abstract]
Vesting period of awards		3 years
Performance period		1 year
[1] The total intrinsic value of stock-settled appreciation rights exercised was approximately $457,000 and $184,000 in 2015 and 2014, 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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