GUARANTORS OF SECURITIES Supplemental Condensed Consolidating Balance Sheet Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Guarantees [Abstract]
Allowance for doubtful accounts - Trade Receivables	$ 139	$ 261
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	60,000,000	60,000,000
Common stock, shares outstanding (in shares)	21,285,613	21,765,404
Treasury shares (in shares)	1,152,826	156,737