INCOME TAXES, Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Mar. 31, 2017
Deferred Tax Assets [Abstract]
Accrued vacation	$ 1,596	$ 2,217
Deferred revenue	668	3,107
Foreign net operating loss carryforward	0	462
Reserve for credit losses	607	2,026
Restricted stock	1,270	1,779
Other accruals and reserves	1,497	2,555
Other credits and carryforwards	1,335	1,166
Gross deferred tax assets	6,973	13,312
Less: valuation allowance	(1,335)	(1,270)
Net deferred tax assets	5,638	12,042
Deferred Tax Liabilities [Abstract]
Basis difference in fixed assets	(1,570)	(1,399)
Basis difference in operating leases	(4,517)	(9,926)
Basis difference in tax deductible goodwill	(1,213)	(2,516)
Total deferred tax liabilities	(7,300)	(13,841)
Net deferred tax liabilities	$ (1,662)	$ (1,799)