STOCKHOLDERS' EQUITY (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	1 Months Ended	12 Months Ended
	Feb. 29, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Options Outstanding
Shares		341
Wtd. Avg. Remaining Contractual Life		6 years 4 days
Wtd. Avg. Exercise Price (in dollars per share)		$ 25.62
Options Exercisable
Shares		240
Wtd. Avg. Remaining Contractual Life		4 years 10 months 28 days
Wtd. Avg. Exercise Price (in dollars per share)		$ 24.33
Additional information
Unrecognized compensation cost		$ 1,895
Weighted-average recognition period		2 years 1 month 6 days
Range of exercise price per share from $4.00 to $20.01
Changes in awards, Wtd Avg Grant Price
Exercise price, low end of range (in dollars per share)		$ 4.00
Exercise price, high end of range (in dollars per share)		$ 20.01
Options Outstanding
Shares		8
Wtd. Avg. Remaining Contractual Life		1 year 10 months 13 days
Wtd. Avg. Exercise Price (in dollars per share)		$ 4.28
Options Exercisable
Shares		8
Wtd. Avg. Remaining Contractual Life		1 year 10 months 13 days
Wtd. Avg. Exercise Price (in dollars per share)		$ 4.28
Range of exercise price per share from $20.01 to $30.00
Changes in awards, Wtd Avg Grant Price
Exercise price, low end of range (in dollars per share)		$ 20.01
Exercise price, high end of range (in dollars per share)		$ 30.00
Options Outstanding
Shares		226
Wtd. Avg. Remaining Contractual Life		5 years 9 months 7 days
Wtd. Avg. Exercise Price (in dollars per share)		$ 21.37
Options Exercisable
Shares		162
Wtd. Avg. Remaining Contractual Life		4 years 4 months 20 days
Wtd. Avg. Exercise Price (in dollars per share)		$ 20.29
Range of exercise price per share over $30.00
Changes in awards, Wtd Avg Grant Price
Exercise price, low end of range (in dollars per share)		$ 30.00
Options Outstanding
Shares		107
Wtd. Avg. Remaining Contractual Life		6 years 9 months 18 days
Wtd. Avg. Exercise Price (in dollars per share)		$ 36.11
Options Exercisable
Shares		70
Wtd. Avg. Remaining Contractual Life		6 years 5 months 12 days
Wtd. Avg. Exercise Price (in dollars per share)		$ 35.96
2007 Stock and Incentive Compensation Plan
Stock-based compensation
Shares available for future grant		99
Restricted shares
Changes in unvested awards, shares
Balance at the beginning of the period (in shares)		71	92	80
Granted (in shares)		29	20	23
Vested or Exercised (in shares)		(44)	(35)
Forfeited (in shares)		(6)	(6)	(11)
Balance at the end of the period (in shares)		50	71	92
Changes in awards, Wtd Avg Grant Price
Balance at the beginning of the period (in dollars per share)		$ 37.85	$ 33.74	$ 30.62
Granted (in dollars per share)		$ 24.16	$ 36.69	$ 42.49
Vested or Exercised (in dollars per share)		$ 37.61	$ 26.81
Forfeited (in dollars per share)		$ 28.55	$ 34.76	$ 29.23
Balance at the end of the period (in dollars per share)		$ 31.35	$ 37.85	$ 33.74
Restricted shares | 2007 Stock and Incentive Compensation Plan
Stock-based compensation
Number of shares of common stock that can be purchased		200
Number of anniversaries		3 years
Number of shares awarded		129
Option award
Changes in option awards outstanding, Shares
Balance at the beginning of the period (in shares)		292	314	430
Granted (in shares)		63	32	2
Vested or Exercised (in shares)		(11)	(38)	(95)
Forfeited (in shares)		(3)	(16)	(23)
Balance at the end of the period (in shares)		341	292	314
Changes in option awards, Wtd Avg Ex. Price
Balance at the beginning of the period (in dollars per share)		$ 25.15	$ 22.39	$ 18.87
Granted (in dollars per share)		$ 24.16	$ 36.69	$ 31.91
Vested or Exercised (in dollars per share)		$ 6.49	$ 10.86	$ 5.44
Forfeited (in dollars per share)		$ (20.19)	$ (28.05)	$ (27.59)
Balance at the end of the period (in dollars per share)		$ 25.62	$ 25.15	$ 22.39
Exercisable options and related information
Exercisable at end of year (in shares)		240	219	199
Weighted average price (in dollars per share)		$ 24.33	$ 22.21	$ 19.59
Weighted average fair value of options granted during the year (in dollars per share)		$ 10.92	$ 18.31	$ 11.08
Changes in unvested options, Shares
Balance at the beginning of the period (in shares)		73
Vested (in shares)		35
Granted (in shares)		63	32	2
Forfeited (in shares)		0
Balance at the end of the period (in shares)		101	73
Changes in unvested options, Wtd Avg Ex. Price
Balance at the beginning of the period (in dollars per share)		$ 34.02
Vested (in dollars per share)		$ 31.63
Granted (in dollars per share)		$ 24.16	$ 36.69	$ 31.91
Forfeited (in dollars per share)		$ (22.18)
Balance at the end of the period (in dollars per share)		$ 28.69	$ 34.02
Assumptions used in determining the fair value option awards
Equivalent interest rate (as a percent)	1.92%
Equivalent volatility (as a percent)	40.00%
Implied expected lives	7 years 11 months 23 days
Additional information
Total fair value of option shares vested		$ 3,124	$ 2,581
Option award | 2000 Employee Stock Option Plan
Stock-based compensation
Number of shares of common stock that can be purchased		1,000
Term of options		10 years
Changes in option awards outstanding, Shares
Balance at the end of the period (in shares)		123
Option award | 2007 Stock and Incentive Compensation Plan
Stock-based compensation
Number of shares of common stock that can be purchased		500
Term of options		10 years
Option share awards vest annually in increments (as a percent)		25.00%
Vesting period		4 years
Changes in option awards outstanding, Shares
Balance at the end of the period (in shares)		219