SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2018

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]

Concentration of Credit Risk

Cash balances were as follows at December 31 (in thousands):

	December 31, 2018		December 31, 2017
Cash in U.S. dollars in U.S. banks	$	69,155	$	55,376
Cash in foreign banks and foreign currency		3,865		3,774
Petty cash		9		6
	$	73,029	$	59,156