COMMON AND PREFERRED STOCK (Details)	12 Months Ended
	Dec. 31, 2015 USD ($) Class $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013 USD ($) shares	May. 31, 2011 USD ($)
COMMON AND PREFERRED STOCK [Abstract]
Total shares of preferred and common stock authorized for issuance (in shares)	100,000,000
Number of classes of shares | Class	2
Common stock, shares authorized (in shares)	95,000,000	95,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, par value (in dollars per share) | $ / shares	$ 0.001	$ 0.001
Changes in number of common stock shares [Roll forward]
Beginning Balance (in shares)	61,066,712	61,858,199	63,532,622
Stock Based Compensation (in shares)	0	0	57,371
Stock Options Exercised (in shares)	0	100,000	10,091
Restricted Stock Grants (in shares)	2,112,998	299,416	353,596
Stock repurchase (in shares)	0	(1,153,885)	(2,036,383)
Other Surrenders (in shares)	(57,929)	(79,461)	(59,098)
Other (in shares)	(1,397)	42,443	0
Ending balance (in shares)	63,120,384	61,066,712	61,858,199
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Based Compensation (in shares)	0	0	57,371
Stock options exercised (in shares)	0	100,000	10,091
Stock Activity [Abstract]
Common stock surrendered by certain employees to cover tax obligations (in shares)	57,929	43,835	16,585
Fair value of common stock surrendered by certain employees to cover tax obligations | $	$ 277,000	$ 587,000	$ 253,000
Common stock surrendered by certain employees related to termination of employment (in shares)	1,397		39,049
Stock Repurchase Program [Abstract]
Stock repurchase program, amount approved | $				$ 150,000,000
Treasury stock, repurchased and retired | $		$ 15,500,000	$ 26,100,000
Performance Stock [Member]
Performance Equity Awards [Abstract]
Vesting period	3 years
Risk-free interest rate, minimum	0.11%
Risk-free interest rate, maximum	44.00%
Compensation expense | $	$ 500,000
Performance Stock [Member] | Minimum [Member]
Performance Equity Awards [Abstract]
Participants earning percentage	0.00%
Performance Stock [Member] | Maximum [Member]
Performance Equity Awards [Abstract]
Participants earning percentage	150.00%
Value of performance shares if all participants earned maximum award | $	$ 2,900,000
Director [Member]
Changes in number of common stock shares [Roll forward]
Stock Options Exercised (in shares)		100,000	10,091
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options exercised (in shares)		100,000	10,091
Shares surrendered to cover aggregate exercise price (in shares)		35,626	3,464
Aggregate exercise price of stock surrendered | $		$ 518,000	$ 52,000
Chief Executive Officer [Member]
Changes in number of common stock shares [Roll forward]
Stock Based Compensation (in shares)			57,371
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Based Compensation (in shares)			57,371
Fair value of common stock issued, share based compensation | $			$ 825,000
Stock Activity [Abstract]
Common stock surrendered by certain employees related to termination of employment (in shares)	1.4