STOCKHOLDERS' EQUITY - Information about stock options - (Details) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Mar. 02, 2015	Mar. 17, 2014	Mar. 01, 2013	Jan. 01, 2016	Dec. 31, 2014	Dec. 31, 2013
Options Outstanding
Shares				467
Wtd. Avg. Remaining Contractual Life				5 years 2 months 1 day
Wtd. Avg. Exercise Price (in dollars per share)				$ 26.39
Options Exercisable
Shares				312
Wtd. Avg. Remaining Contractual Life				3 years 8 months 9 days
Wtd. Avg. Exercise Price (in dollars per share)				$ 25.49
Assumptions used in determining the fair value option awards
Equivalent interest rate (as a percent)		2.68%	1.86%
Dividend yield				0.00%
Dividend payouts				$ 0
Additional information
Unrecognized compensation cost				$ 3,589
Weighted-average recognition period				2 years 4 months 13 days
Range of exercise price per share from $0.00 to $20.01
Options Outstanding
Shares				107
Wtd. Avg. Remaining Contractual Life				1 year 7 months 10 days
Wtd. Avg. Exercise Price (in dollars per share)				$ 19.41
Options Exercisable
Shares				100
Wtd. Avg. Remaining Contractual Life				1 year 4 months 21 days
Wtd. Avg. Exercise Price (in dollars per share)				$ 19.41
Range of exercise price per share from $20.01 to $30.00
Options Outstanding
Shares				213
Wtd. Avg. Remaining Contractual Life				6 years 6 months 7 days
Wtd. Avg. Exercise Price (in dollars per share)				$ 22.92
Options Exercisable
Shares				122
Wtd. Avg. Remaining Contractual Life				5 years 5 months 19 days
Wtd. Avg. Exercise Price (in dollars per share)				$ 22.81
Range of exercise price per share over $30.00
Options Outstanding
Shares				147
Wtd. Avg. Remaining Contractual Life				5 years 9 months 22 days
Wtd. Avg. Exercise Price (in dollars per share)				$ 36.46
Options Exercisable
Shares				90
Wtd. Avg. Remaining Contractual Life				3 years 9 months 22 days
Wtd. Avg. Exercise Price (in dollars per share)				$ 35.95
Option awards
Exercisable Options And Related Information Abstract
Balance at the end of the period				$ 5,529	$ 5,696	$ 5,251
Exercisable at end of year (in shares)				312	273	259
Weighted average price (in dollars per share)				$ 25.49	$ 25.59	$ 24.89
Weighted average fair value of options granted during the year (in dollars per share)				$ 12.35	$ 11.61	$ 9.59
Changes in unvested options, Shares
Balance at the beginning of the period (in shares)				154,000
Vested (in shares)				55,000
Granted (in shares)				56,000	70,000	68,000
Balance at the end of the period (in shares)				155,000	154,000
Changes in unvested options, Wtd Avg Ex. Price
Balance at the beginning of the period (in dollars per share)				$ 23.65
Vested (in dollars per share)				24.73
Granted (in dollars per share)				37.30	$ 24.28	$ 20.71
Forfeited (in dollars per share)				(24.08)
Balance at the end of the period (in dollars per share)				$ 28.20	$ 23.65
Assumptions used in determining the fair value option awards
Equivalent interest rate (as a percent)	2.07%
Equivalent volatility (as a percent)	32.50%
Implied expected lives	6 years 10 months 10 days
Additional information
Total fair value of option shares vested				$ 487	$ 446