5. REVOLVING CREDIT FACILITY, NOTES PAYABLE AND CAPITAL LEASES (Details - Schedule of debt) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Discounts on term loan and notes	$ (19,309)	$ (16,783)
Promissory notes payable	690	980
Equipment notes payable	233	341
Obligations under capital leases	7,790	7,256
Total notes payable, line of credit and capital lease obligations	617,946	638,732
Less: current portion	(34,852)	(26,557)
Total notes payable, line of credit and capital lease obligations, long-term	583,094	612,175
First Lien Term Loans [Member]
Term loans	628,542	478,938
Second Lien Term Loans [Member]
Term loans	$ 0	$ 168,000