6. FINANCIAL INSTRUMENTS - Contractual maturities (Details) $ in Thousands	Mar. 31, 2016 USD ($)
Financial Instruments.
Maturing within one year, Cost	$ 23,137
Maturing in one to three years, Cost	11,118
Total	34,255
Maturing within one year, Fair Value	23,150
Maturing in one to three years, Fair Value	11,147
Fair Value	$ 34,297