INCOME TAXES (Tables)

3 Months Ended

Apr. 30, 2017

INCOME TAXES

Schedule of actual income tax expense amounts

	Three Months Ended April 30,
	2017			2016
Computed expected income tax expense	$	11,139		$	7,452
Increase (decrease) resulting from:
State income taxes, net of federal tax benefit	1,207			584
Stock option exercises	(273		)	—
Domestic production activities deduction	(793		)	(667		)
Exclusion of non-controlling interests	(43		)	(661		)
Adjustments and other differences	(161		)	464
	$	11,076		$	7,172

Schedule of tax effects of temporary differences that gave rise to deferred tax assets and liabilities

	April 30,			January 31,
	2017			2017
Assets:
Net operating loss (“NOL”) carryforwards	$	3,478		$	3,487
Stock options	1,935			1,594
Purchased intangibles	1,508			1,592
Accrued expenses and other	1,713			2,052
	8,634			8,725
Liabilities:
Purchased intangibles	(4,508		)	(4,428		)
Construction contracts	(3,002		)	(2,862		)
Property and equipment and other	(2,336		)	(2,389		)
	(9,846		)	(9,679		)
Net deferred tax liabilities	$	(1,212	)	$	(954	)