EARNINGS PER SHARE - (Details) - $ / shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Shares
Basic (in shares)	18,181	17,997	18,169	17,967
Effect of dilutive stock options (in shares)		669		676
Diluted (in shares)	18,181	18,666	18,169	18,643
Per Share Amount
Basic (in dollars per share)	$ (0.24)	$ 0.52	$ (0.13)	$ 0.91
Effect of dilutive stock options (in dollars per share)		(0.02)		(0.03)
Diluted (in dollars per share)	$ (0.24)	$ 0.50	$ (0.13)	$ 0.88