2. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenue
Commercial Insurance	$ 39,291	$ 36,911	$ 37,384
Medicare	13,233	12,322	12,003
Medicaid	1,807	1,980	1,872
Workers Compensation/Personal Injury	2,390	2,805	2,643
Other	1,574	990	1,156
Service fee revenue, net of contractual allowances and discounts	58,295	55,008	55,058
Provision for bad debts	(2,796)	(2,824)	(2,832)
Net service fee revenue	$ 55,499	$ 52,184	$ 52,226