STOCKHOLDERS' EQUITY, Share Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Jan. 28, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 27, 2021	Aug. 09, 2020	Jun. 30, 2019	Sep. 01, 2016	Aug. 31, 2015
Stockholders' Equity Note [Abstract]
Number of shares authorized to be repurchased (in shares)						1,000,000	2,200,000	1,200,000
Common stock, shares repurchased (in shares)		0	131,782
Common stock, shares repurchased, average price per share (in dollars per share)		$ 0	$ 5.58
Number of shares available for repurchase (in shares)		5.0
Common stock, par value (in dollars per share)		$ 0.0024	$ 0.0024
Share Repurchase Program [Member]
Stockholders' Equity Note [Abstract]
Remaining repurchase of common stock		$ 5.0
Share Repurchase Program [Member] | Subsequent Event [Member]
Stockholders' Equity Note [Abstract]
Repurchase of common stock (in shares)	500,000
Common stock, par value (in dollars per share)	$ 0.0024
Purchase price per share (in dollars per share)	$ 3.35
Purchase price	$ 1.7
Percentage of outstanding common stock				5.50%
Maximum [Member] | Share Repurchase Program [Member]
Stockholders' Equity Note [Abstract]
Repurchase of common stock shares					$ 5.0