INCOME TAXES (Tables)

12 Months Ended

Jan. 31, 2019

INCOME TAXES

Schedule of components of company's income tax expense (benefit)

	2019		2018		2017
Current:
Federal	$	3,603	$	(32,490)	$	(29,681)
State		(1,091)		(7,853)		(6,188)
		2,512		(40,343)		(35,869)
Deferred:
Federal		971		2		(1,277)
State		1,168		62		40
		2,139		64		(1,237)
Income tax  benefit (expense)	$	4,651	$	(40,279)	$	(37,106)

Schedule of actual income tax expense amounts

	2019		2018		2017
Computed expected income tax expense	$	(9,916)	$	(38,078)	$	(40,086)
Difference resulting from:
Federal research and development tax credits		13,866		—		—
State income taxes, net of federal tax effect		683		(5,042)		(4,001)
Net operating loss carryforwards		1,730		—		—
Stock options		32		962		4,969
Domestic production activities deduction		—		3,204		2,906
Other permanent differences, net		(1,585)		(1,141)		551
Impact of the federal tax rate change on deferred taxes		—		789		—
Adjustments and other differences		(159)		(973)		(1,445)
Income tax benefit (expense)	$	4,651	$	(40,279)	$	(37,106)

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

	2019		2018
Assets:
Net operating loss carryforwards	$	3,034	$	2,635
Stock awards		2,188		2,042
Research and development credit carryforwards		631		—
Purchased intangibles		604		864
Accrued expenses and other		758		862
		7,215		6,403
Liabilities:
Purchased intangibles		(3,373)		(3,664)
Construction contracts		(454)		(1,896)
Property and equipment and other		(2,131)		(1,683)
		(5,958)		(7,243)
Net deferred tax assets (liabilities)	$	1,257	$	(840)