BUSINESS AND SUMMARY OF ACCOUNTING POLICIES - Operating lease liabilities (Details) - USD ($)	Sep. 30, 2019	Jan. 01, 2019
Lease Accounting
2019 (excluding the nine months ended September 30, 2019)	$ 184,000
2020	586,000
2021	507,000
2022	466,000
2023	468,000
Thereafter	201,000
Total operating lease payments	2,412,000
Less imputed interest	(228,000)
Total operating lease liabilities	$ 2,184,000	$ 418,000
Weighted-average remaining lease term	4 years 3 months 18 days
Weighted-average discount rate	5.00%