1. Summary of Accounting Policies (Tables)

12 Months Ended

Apr. 30, 2019

Disaggregation of Revenue [Table Text Block]

Total revenue related to the adoption ASU 2014-09 and recognized over time as POC was approximately $45.3 million of the $49.5 million reported for the year ended April 30, 2019. The amounts by segment and product line were as follows:

	Year Ended April 30, 2019
	(In thousands)
	POC Revenue			POT Revenue			Total Revenue
FEI-NY	$	35,588		$	2,508		$	38,096
FEI-Zyfer		9,803			2,432			12,235
Intersegment		(62	)		(760	)		(822	)
Revenue	$	45,329		$	4,180		$	49,509

Revenue from External Customers by Products and Services [Table Text Block]

	Years Ended April 30,
	(In thousands)
	2019		2018
Revenue by Product Line:
Satellite Revenue	$	22,810	$	14,210
Government Non-Space Revenue		22,771		17,610
Other Commercial & Industrial Revenue		3,928		7,587
Consolidated revenues	$	49,509	$	39,407

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The weighted average fair value of each option or stock appreciation right (“SAR”) has been estimated on the date of grant using the Black-Scholes option pricing model with the following range of weighted average assumptions used for grants:

	Years ended April 30
	2019			2018
Expected volatility		35	%		35	%
Dividend yield		0.0	%		0.0	%
Risk-free interest rate		2.81% - 3.07	%		1.85	%
Expected lives	5.0 years			5.0 years

Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]

The cumulative effect of changes made to the Consolidated Balance Sheet as of May 1, 2018 was as follows (in thousands):

	Balance at April 30, 2018			Adjustments				Balance at May 1, 2018
ASSETS
Costs and estimated earnings in excess of billings, net	$	5,094		$	1,435		(a)	$	6,529
Inventories, net		26,186			(929	)	(b)		25,257
Prepaid expenses and other		1,050			77		(c)		1,127
Total current assets		52,075			583				52,658
Other assets		2,850			10		(d)		2,860
Total assets		83,584			593				84,177

LIABILITIES AND STOCKHOLDERS’ EQUITY
Accrued liabilities	$	3,416		$	97		(e)	$	3,513
Total current liabilities		5,257			97				5,354
Deferred rent and other liabilities		1,524			12		(f)		1,536
Total liabilities		20,322			109				20,431
(Accumulated deficit) Retained Earnings		(65	)		484		(g)		419
Total stockholders’ equity		63,262			484				63,746
Total liabilities and stockholders’ equity		83,584			593				84,177

	As Reported			Adjustments				Balances Without Adoption of ASU 2014-09
ASSETS
Costs and estimated earnings in excess of billings, net	$	6,670		$	4,087		(a)	$	2,583
Inventories, net		23,356			(3,437	)	(b)		26,793
Prepaid expenses and other		2,583			56		(c)		2,527
Total current assets		52,699			706				51,993
Other assets		5,923			15		(d)		5,908
Total assets		86,771			721				86,050

LIABILITIES AND STOCKHOLDERS’ EQUITY
Accrued liabilities	$	3,571			75		(e)		3,496
Total current liabilities		5,837			75				5,762
Deferred rent and other liabilities		1,376			12		(f)		1,364
Total liabilities		23,682			87				23,595
Accumulated deficit		(2,111	)		632		(g)		(2,743	)
Total stockholders’ equity		63,089			632				62,457
Total liabilities and stockholders’ equity		86,771			721				86,050

	As Reported			Adjustments			Balances Without Adoption of ASU 2014-09
Revenues	$	49,509		$	2,662		$	46,847
Cost of revenues		33,720			2,508			31,212
Gross profit		15,789			154			15,635
Selling and administrative expenses		12,100			5	(a)		12,095
Operating loss		(2,817	)		149			(2,996	)
Loss before provision for income taxes		(2,473	)		149			(2,622	)
Net loss		(2,529	)		149			(2,678	)

(a) Adjustment to unbilled accounts receivable for additional revenue recognized for which amounts have not been invoiced due to adoption of ASU 2014-09.

(b) Adjustment for additional allocated inventory costs related to additional revenue recognized due to adoption of ASU 2014-09.

(c) Adjustment for short-term capitalization of sales commissions, net of amortized amounts, due to adoption of ASC 340-40.

(d) Adjustment for long-term capitalization of sales commissions, net of amortized amounts, due to adoption of ASC 340-40.

(e) Adjustment to record short-term liability of sales commissions, net of amounts paid, due to adoption of ASC 340-40.

(f) Adjustment to record long-term liability of sales commissions, net of amounts paid, due to adoption of ASC 340-40.

(g) The cumulative effect of initially adopting ASU 2014-09 and ASC 340-40 using the modified-retrospective method as an adjustment to the beginning balance of (Accumulated deficit) Retained Earnings.

(a) Cumulative adjustment to unbilled accounts receivable for additional revenue recognized for which amounts have not been invoiced due to adoption of ASU 2014-09.

(b) Cumulative adjustment for additional allocated inventory costs related to additional revenue recognized due to adoption of ASU 2014-09.

(c) Cumulative adjustment for short-term capitalization of sales commissions, net of amortized amounts, due to adoption of ASC 340-40.

(d) Cumulative adjustment for long-term capitalization of sales commissions, net of amortized amounts, due to adoption of ASC 340-40.

(e) Cumulative adjustment to record short-term liability of sales commissions, net of amounts paid, due to adoption of ASC 340-40.

(f) Cumulative adjustment to record long-term liability of sales commissions, net of amounts paid, due to adoption of ASC 340-40.

(g) The cumulative effect of initially adopting for ASU 2014-09 and ASC 340-40 using the modified-retrospective method as an adjustment to the balance of Retained earnings (Accumulated deficit).

(a) Additional expense related the amortization of sales commissions due to the adoptions of ASC 340-40.