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STOCKHOLDERS’ EQUITY AND STOCK-BASED COMPENSATION - Long Term Incentive Plan (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation   $ 235,000 $ 346,000
CPHC Long Term Incentive Plan (LTI Plan) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance Period   P3Y  
Stock-based compensation   $ 100,000 $ 216,000
CPHC Long Term Incentive Plan (LTI Plan) [Member] | Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Performance Period   P1Y  
CPHC Long Term Incentive Plan (LTI Plan) [Member] | Employee Deferred Stock Award [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares payout 24,681