8. COMMON STOCK - Repurchases (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Share repurchase program
Repurchase of common stock, amount	$ 7,112	$ 7,026	$ 30,026
Common shares
Share repurchase program
Repurchase of common stock, shares	11,983,942
Treasury stock acquired cost per share	$ 5.06
Repurchase of common stock, amount	$ 60,600
Remaining authorized amount to be repurchased	$ 4,400