STOCKHOLDERS' EQUITY (Narrative) (Details) - USD ($)				3 Months Ended		9 Months Ended
	Nov. 01, 2018	Oct. 30, 2018	Oct. 25, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	May 03, 2016
Stockholders Equity Description [Line Items]
Exercise of stock options						$ 1,939,000	$ 4,144,000
Employee tax withholdings related to the vesting of equity awards						$ 1,916,000	$ 1,596,000
Dividends paid per share to all stockholders of record (in Dollars per Share)				$ 0.25	$ 0.175	$ 0.75	$ 0.525
Purchased and placed in treasury, shares						839,000	29,000
Purchase and placed in treasury, value						$ 26,304,000	$ 1,500,000
Preferred stock, shares authorized (in Shares)				5,000,000		5,000,000		5,000,000
Dividend Declared [Member] | Subsequent Event [Member]
Stockholders Equity Description [Line Items]
Dividends payable (in Description)	Quarterly
Dividends payable, amount per share (in Dollars per Share)	$ 0.25
Dividends payable, date to be paid (Date)	Nov. 19, 2018
Dividends payable, date of record (Date)	Nov. 09, 2018
Stock Option [Member]
Stockholders Equity Description [Line Items]
Exercise of stock options (in Shares)						101,000
Common Stock [Member]
Stockholders Equity Description [Line Items]
Exercise of stock options (in Shares)						101,000
Common stock surrendered by employees in satisfaction of minimum tax withholding associated with equity award vesting (in Shares)						40,000	34,000
Employee tax withholdings related to the vesting of equity awards						$ 1,916,000	$ 1,596,000
Common stock issued for services (in Shares)						29,000	14,000
Common stock issued for services, costs recognized						$ 910,000	$ 700,000
Share repurchase program commencement date			Nov. 04, 2017
Purchase and placed in treasury, value						$ 0
Common Stock [Member] | Maximum [Member]
Stockholders Equity Description [Line Items]
Common stock authorized to repurchase amount			$ 50,000,000						$ 50,000,000
Common Stock [Member] | Consultants [Member]
Stockholders Equity Description [Line Items]
Common stock issued for services (in Shares)						3,000
Common stock issued for services, costs recognized						$ 100,000
Common Stock [Member] | Subsequent Event [Member]
Stockholders Equity Description [Line Items]
Share repurchase program commencement date		Oct. 30, 2018
Common Stock [Member] | Subsequent Event [Member] | Maximum [Member]
Stockholders Equity Description [Line Items]
Common stock authorized to repurchase amount		$ 75,000,000
Common Stock [Member] | Surrender of Shares by Employees for Tax Withholding Obligations [Member]
Stockholders Equity Description [Line Items]
Purchase and retirement of common stock, shares							22,000
Purchase and retirement of common stock, value							$ 785,000
Common Stock [Member] | Stock Option [Member]
Stockholders Equity Description [Line Items]
Exercise of stock options (in Shares)						101,000	261,000