STOCKHOLDERS' EQUITY - Schedule of Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning period	$ 266,702	$ 160,190	$ 131,905	$ 92,942	$ 59,571	$ 50,513	$ 131,905	$ 50,513
Net income (loss) from continuing operations	(42,039)	104,517	25,735	12,881			88,213	71,259
Net income from continuing operations	(42,039)			12,881	21,080	36,013	88,213	69,974
Net income from discontinued operations	0			0	993	292	0	1,285
Foreign currency translation adjustment	(10,611)	4,714	3,855	5,591	10,261	(22,193)	(2,042)	(6,341)
Dividends	(4,547)	(4,582)	(2,368)	(2,250)	(2,244)	(2,256)
Share based compensation expense	3,998	3,467	2,683	3,392	3,310	3,194
Proceeds from exercise of stock options	27	191	48			126
Repurchase of common stock	(15,940)	(1,752)				(5,509)
Common stock issued for RSUs vesting, net of shares withheld and withholding paid for employee taxes	(107)	(43)	(1,668)	(3)	(29)	(609)
Balance, ending period	$ 197,483	$ 266,702	$ 160,190	$ 112,553	$ 92,942	$ 59,571	$ 197,483	$ 112,553
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning period (in shares)	41,679,541	41,623,779	41,370,504	40,884,545	40,779,447	41,156,224	41,370,504	41,156,224
Balance, beginning period	$ 9	$ 9	$ 9	$ 9	$ 9	$ 9	$ 9	$ 9
Proceeds from exercise of stock options (in shares)	7,200	43,920	15,852			42,094
Repurchase of common stock (in shares)	(964,566)	(104,487)				(540,762)
Common stock issued for RSU's vesting, net of shares withheld and withholding paid for employee taxes (in shares)	14,936	116,329	237,423	568	105,098	121,891
Balance, ending period (in shares)	40,737,111	41,679,541	41,623,779	40,885,113	40,884,545	40,779,447	40,737,111	40,885,113
Balance, ending period	$ 9	$ 9	$ 9	$ 9	$ 9	$ 9	$ 9	$ 9
Treasury Stock, at cost
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning period	(79,604)	(77,852)	(77,852)	(77,852)	(77,852)	(72,343)	(77,852)	(72,343)
Repurchase of common stock	(15,940)	(1,752)				(5,509)
Balance, ending period	(95,544)	(79,604)	(77,852)	(77,852)	(77,852)	(77,852)	(95,544)	(77,852)
Paid-in capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning period	84,490	80,875	79,812	74,079	70,798	68,087	79,812	68,087
Share based compensation expense	3,998	3,467	2,683	3,392	3,310	3,194
Proceeds from exercise of stock options	27	191	48			126
Common stock issued for RSUs vesting, net of shares withheld and withholding paid for employee taxes	(107)	(43)	(1,668)	(3)	(29)	(609)
Balance, ending period	88,408	84,490	80,875	77,468	74,079	70,798	88,408	77,468
Retained Earnings (Deficit)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning period	283,370	183,435	160,068	147,301	127,472	93,423	160,068	93,423
Net income (loss) from continuing operations	(42,039)	104,517	25,735
Net income from continuing operations				12,881	21,080	36,013
Net income from discontinued operations					993	292
Dividends	(4,547)	(4,582)	(2,368)	(2,250)	(2,244)	(2,256)
Balance, ending period	236,784	283,370	183,435	157,932	147,301	127,472	236,784	157,932
AOCI
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance, beginning period	(21,563)	(26,277)	(30,132)	(50,595)	(60,856)	(38,663)	(30,132)	(38,663)
Foreign currency translation adjustment	(10,611)	4,714	3,855	5,591	10,261	(22,193)
Balance, ending period	$ (32,174)	$ (21,563)	$ (26,277)	$ (45,004)	$ (50,595)	$ (60,856)	$ (32,174)	$ (45,004)