Comtech Telecommunications (CMTL) 10-Q 7 Mar 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jan. 31, 2018	Mar. 02, 2018
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jan. 31, 2018
Current Fiscal Year End Date	--07-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2,018
Entity Registrant Name	COMTECH TELECOMMUNICATIONS CORP /DE/
Entity Central Index Key	23,197
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		23,620,113

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($)	Jan. 31, 2018	Jul. 31, 2017
Current assets:
Cash and cash equivalents	$ 40,472,000	$ 41,844,000
Accounts receivable, net	117,973,000	124,962,000
Inventories, net	71,707,000	60,603,000
Prepaid expenses and other current assets	14,915,000	13,635,000
Total current assets	245,067,000	241,044,000
Property, plant and equipment, net	30,122,000	32,847,000
Goodwill	290,633,000	290,633,000
Intangibles with finite lives, net	251,334,000	261,871,000
Deferred financing costs, net	2,635,000	3,065,000
Other assets, net	2,860,000	2,603,000
Total assets	822,651,000	832,063,000
Current liabilities:
Accounts payable	27,662,000	29,402,000
Accrued expenses and other current liabilities	60,585,000	68,610,000
Dividends payable	2,351,000	2,343,000
Customer advances and deposits	24,848,000	25,771,000
Current portion of long-term debt	17,211,000	15,494,000
Current portion of capital lease obligations	1,858,000	2,309,000
Interest payable	83,000	282,000
Total current liabilities	134,598,000	144,211,000
Non-current portion of long-term debt, net	174,225,000	176,228,000
Non-current portion of capital lease obligations	885,000	1,771,000
Income taxes payable	2,558,000	2,515,000
Deferred tax liability, net	6,088,000	17,306,000
Customer advances and deposits, non-current	8,385,000	7,227,000
Other liabilities	5,291,000	2,655,000
Total liabilities	332,030,000	351,913,000
Commitments and contingencies (See Note 18)
Stockholders’ equity:
Preferred stock, par value $.10 per share; shares authorized and unissued 2,000,000	0	0
Common stock, par value $.10 per share; authorized 100,000,000 shares; issued 38,653,430 shares and 38,619,467 shares at January 31, 2018 and July 31, 2017, respectively	3,865,000	3,862,000
Additional paid-in capital	534,224,000	533,001,000
Retained earnings	394,381,000	385,136,000
Stockholders' equity before treasury stock	932,470,000	921,999,000
Treasury stock, at cost (15,033,317 shares at January 31, 2018 and July 31, 2017)	(441,849,000)	(441,849,000)
Total stockholders’ equity	490,621,000	480,150,000
Total liabilities and stockholders’ equity	$ 822,651,000	$ 832,063,000

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Jan. 31, 2018	Jul. 31, 2017
Stockholders’ equity:
Preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	38,653,430	38,619,467
Treasury stock, shares (in shares)	15,033,317	15,033,317

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2018	Jan. 31, 2017
Income Statement [Abstract]
Net sales	$ 133,731,000	$ 139,028,000	$ 255,300,000	$ 274,814,000
Cost of sales	82,930,000	85,824,000	156,783,000	169,502,000
Gross profit	50,801,000	53,204,000	98,517,000	105,312,000
Expenses:
Selling, general and administrative	27,215,000	30,988,000	55,690,000	63,673,000
Research and development	13,435,000	13,314,000	27,185,000	27,410,000
Amortization of intangibles	5,268,000	6,032,000	10,537,000	12,087,000
Settlement of intellectual property litigation	0	(9,979,000)	0	(9,979,000)
Total operating expenses	45,918,000	40,355,000	93,412,000	93,191,000
Operating income	4,883,000	12,849,000	5,105,000	12,121,000
Other expenses (income):
Interest expense	2,519,000	2,852,000	5,107,000	6,177,000
Interest (income) and other	(48,000)	(74,000)	(9,000)	(76,000)
Income before (benefit from) provision for income taxes	2,412,000	10,071,000	7,000	6,020,000
(Benefit from) provision for income taxes	(13,349,000)	3,486,000	(14,094,000)	1,924,000
Net income	$ 15,761,000	$ 6,585,000	$ 14,101,000	$ 4,096,000
Net income per share (See Note 4):
Basic (in dollars per share)	$ 0.66	$ 0.28	$ 0.59	$ 0.17
Diluted (in dollars per share)	$ 0.66	$ 0.28	$ 0.59	$ 0.17
Weighted average number of common shares outstanding – basic (in shares)	23,816,000	23,428,000	23,805,000	23,406,000
Weighted average number of common and common equivalent shares outstanding – diluted (in shares)	23,953,000	23,445,000	23,942,000	23,427,000
Dividends declared per issued and outstanding common share as of the applicable dividend record date (in dollars per share)	$ 0.1	$ 0.1	$ 0.20	$ 0.4

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Stockholders' Equity - USD ($)	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock
Beginning balance at Jul. 31, 2016	$ 470,401,000	$ 3,837,000	$ 524,797,000	$ 383,616,000	$ (441,849,000)
Common stock, beginning balance (in shares) at Jul. 31, 2016		38,367,997
Treasury stock, beginning balance (in shares) at Jul. 31, 2016					15,033,317
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-classified stock award compensation	1,989,000		1,989,000
Proceeds from issuance of employee stock purchase plan shares	348,000	$ 3,000	345,000
Proceeds from issuance of employee stock purchase plan shares (in shares)		33,226
Issuance of restricted stock	0	$ 15,000	(15,000)
Issuance of restricted stock (in shares)		144,899
Net settlement of stock-based awards	(244,000)	$ 4,000	(248,000)
Net settlement of stock-based awards (in shares)		40,354
Cash dividends declared	(9,351,000)			(9,351,000)
Accrual of dividend equivalents, net of reversal	(179,000)			(179,000)
Net income tax shortfall from settlement of stock-based awards	(257,000)		(257,000)
Reversal of deferred tax assets associated with expired and unexercised stock-based awards	(344,000)		(344,000)
Net income	4,096,000			4,096,000
Ending balance at Jan. 31, 2017	466,459,000	$ 3,859,000	526,267,000	378,182,000	$ (441,849,000)
Common stock, ending balance (in shares) at Jan. 31, 2017		38,586,476
Treasury stock, ending balance (in shares) at Jan. 31, 2017					15,033,317
Beginning balance at Jul. 31, 2017	$ 480,150,000	$ 3,862,000	533,001,000	385,136,000	$ (441,849,000)
Common stock, beginning balance (in shares) at Jul. 31, 2017	38,619,467	38,619,467
Treasury stock, beginning balance (in shares) at Jul. 31, 2017	15,033,317				15,033,317
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Equity-classified stock award compensation	$ 1,827,000		1,827,000
Proceeds from issuance of employee stock purchase plan shares	397,000	$ 2,000	395,000
Proceeds from issuance of employee stock purchase plan shares (in shares)		24,222
Forfeiture of restricted stock	0	$ (1,000)	1,000
Forfeiture of restricted stock (in shares)		(10,254)
Net settlement of stock-based awards	(998,000)	$ 2,000	(1,000,000)
Net settlement of stock-based awards (in shares)		19,995
Cash dividends declared	(4,701,000)			(4,701,000)
Accrual of dividend equivalents, net of reversal	(155,000)			(155,000)
Net income	14,101,000			14,101,000
Ending balance at Jan. 31, 2018	$ 490,621,000	$ 3,865,000	$ 534,224,000	$ 394,381,000	$ (441,849,000)
Common stock, ending balance (in shares) at Jan. 31, 2018	38,653,430	38,653,430
Treasury stock, ending balance (in shares) at Jan. 31, 2018	15,033,317				15,033,317

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows - USD ($)	6 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Cash flows from operating activities:
Net income	$ 14,101,000	$ 4,096,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization of property, plant and equipment	6,663,000	7,317,000
Amortization of intangible assets with finite lives	10,537,000	12,087,000
Amortization of stock-based compensation	1,827,000	1,989,000
Amortization of deferred financing costs	1,098,000	968,000
Settlement of intellectual property litigation	0	(9,979,000)
Gain on disposal of property, plant and equipment	0	(146,000)
Provision for allowance for doubtful accounts	577,000	433,000
Provision for excess and obsolete inventory	2,433,000	1,061,000
Excess income tax benefit from stock-based awards	0	(61,000)
Deferred income tax (benefit) expense	(11,218,000)	4,307,000
Changes in assets and liabilities:
Accounts receivable	5,801,000	24,989,000
Inventories	(13,537,000)	(875,000)
Prepaid expenses and other current assets	1,745,000	409,000
Other assets	(257,000)	201,000
Accounts payable	(2,259,000)	(8,572,000)
Accrued expenses and other current liabilities	(5,146,000)	(3,882,000)
Customer advances and deposits	235,000	(2,989,000)
Other liabilities, non-current	(242,000)	(749,000)
Interest payable	(199,000)	(471,000)
Income taxes payable	(2,982,000)	(4,525,000)
Net cash provided by operating activities	9,177,000	25,608,000
Cash flows from investing activities:
Purchases of property, plant and equipment	(2,836,000)	(4,147,000)
Net cash used in investing activities	(2,836,000)	(4,147,000)
Cash flows from financing activities:
Net borrowings (repayments) under Revolving Loan Facility	9,400,000	(4,100,000)
Repayment of long-term debt under Term Loan Facility	(10,354,000)	(4,427,000)
Cash dividends paid	(4,821,000)	(14,177,000)
Remittance of employees' statutory tax withholdings for stock awards	(998,000)	(244,000)
Repayment of principal amounts under capital lease obligations	(1,337,000)	(1,853,000)
Proceeds from issuance of employee stock purchase plan shares	397,000	348,000
Payment of issuance costs related to equity offering	0	(626,000)
Payment of deferred financing costs	0	(104,000)
Excess income tax benefit from stock-based awards	0	61,000
Net cash used in financing activities	(7,713,000)	(25,122,000)
Net decrease in cash and cash equivalents	(1,372,000)	(3,661,000)
Cash and cash equivalents at beginning of period	41,844,000	66,805,000
Cash and cash equivalents at end of period	40,472,000	63,144,000
Cash paid during the period for:
Interest	3,977,000	5,538,000
Income taxes, net	108,000	2,143,000
Non-cash investing and financing activities:
Cash dividends declared but unpaid (including dividend equivalents)	2,506,000	2,522,000
Accrued additions to property, plant and equipment	1,102,000	1,147,000
(Forfeiture) issuance of restricted stock	$ (1,000)	$ 15,000

General

General	6 Months Ended
	Jan. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
General	General The accompanying condensed consolidated financial statements of Comtech Telecommunications Corp. and its subsidiaries ("Comtech," "we," "us," or "our") as of and for the three and six months ended January 31, 2018 and 2017 are unaudited. In the opinion of management, the information furnished reflects all material adjustments (which include normal recurring adjustments) necessary for a fair presentation of the results for the unaudited interim periods. Our results of operations for such periods are not necessarily indicative of the results of operations to be expected for the full fiscal year. The preparation of our condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires us to make estimates and assumptions that affect the reported amount of assets and liabilities, and disclosure of contingent assets and liabilities, at the date of the condensed consolidated financial statements, and the reported amounts of net sales and expenses during the reported period. Actual results may differ from those estimates. Our condensed consolidated financial statements should be read in conjunction with our audited consolidated financial statements, filed with the Securities and Exchange Commission ("SEC"), for the fiscal year ended July 31, 2017 and the notes thereto contained in our Annual Report on Form 10-K, and all of our other filings with the SEC. As disclosed in more detail in Note (14) - "Segment Information," we manage our business in two reportable segments: Commercial Solutions and Government Solutions. Certain reclassifications have been made to previously reported condensed consolidated financial statements to conform to the current fiscal period presentation.

Adoption of Accounting Standard

Adoption of Accounting Standards and Updates	6 Months Ended
	Jan. 31, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Adoption of Accounting Standards and Updates	Adoption of Accounting Standards and Updates We are required to prepare our condensed consolidated financial statements in accordance with the Financial Accounting Standard Board ("FASB") Accounting Standards Codification ("ASC") which is the source for all authoritative U.S. generally accepted accounting principles, which are commonly referred to as "GAAP." The FASB ASC is subject to updates by the FASB, which are known as Accounting Standards Updates ("ASUs"). During the six months ended January 31, 2018 , we adopted FASB ASU 2016-09 "Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting" ("ASU 2016-09"), which amends several aspects of the accounting for and reporting of share-based payment transactions. Our adoption of this ASU, on August 1, 2017, did not have a material impact on our condensed consolidated financial statements. See Note (12) - "Stock-Based Compensation" for further information regarding our adoption of this ASU.

Fair Value Measurements and Fin

Fair Value Measurements and Financial Instruments	6 Months Ended
	Jan. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements and Financial Instruments	Fair Value Measurements and Financial Instruments Using the fair value hierarchy described in FASB ASC 820 " Fair Value Measurements and Disclosures," we valued our cash and cash equivalents using Level 1 inputs that were based on quoted market prices. We believe that the carrying amounts of our other current financial assets (such as accounts receivable) and other current liabilities (including accounts payable, accrued expenses and the current portions of our Secured Credit Facility and favorable AT&T warranty settlement) approximate their fair values due to their short-term maturities. The fair value of the non-current portion of our Secured Credit Facility as of January 31, 2018 approximates its carrying amount due to its variable interest rate and pricing grid that is dependent upon our leverage ratio as of the end of each fiscal quarter. We believe the fair value of our non-current portion of capital lease obligations, which currently has a blended interest rate of 5.9% , would not be materially different than its carrying value as of January 31, 2018 . The fair value of the non-current portion of our favorable AT&T warranty settlement as of January 31, 2018 approximates its carrying amount given our belief that the present value of such liability reflects market participants' assumptions for a similar junior, unsecured debt instrument. See Note (7) - "Accrued Expenses and Other Current Liabilities" for further discussion of the favorable AT&T warranty settlement. As of January 31, 2018 and July 31, 2017 , other than the financial instruments discussed above, we had no other significant assets or liabilities included in our Condensed Consolidated Balance Sheets recorded at fair value, as such term is defined by FASB ASC 820.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jan. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share Our basic earnings per share ("EPS") is computed based on the weighted average number of common shares (including vested but unissued stock units, share units, performance shares and restricted stock units ("RSUs")), outstanding during each respective period. Our diluted EPS reflects the dilution from potential common stock issuable pursuant to the exercise of equity-classified stock-based awards, if dilutive, outstanding during each respective period. Pursuant to FASB ASC 260 " Earnings Per Share, " equity-classified stock-based awards that are subject to performance conditions are not considered in our diluted EPS calculations until the respective performance conditions have been satisfied. When calculating our diluted earnings per share, we consider the amount an employee must pay upon assumed exercise of stock-based awards and the amount of stock-based compensation cost attributed to future services and not yet recognized. On August 1, 2017, we adopted ASU 2016-09, which amends several aspects of the accounting for and reporting of share-based payment transactions. As a result of our adoption of ASU 2016-09, the amount of excess tax benefits assuming exercise of in-the-money stock-based awards is no longer included in the calculation of diluted earnings per share on a prospective basis and the denominator for our diluted calculations could increase in the future as compared to prior calculations. See Note (12) - "Stock-Based Compensation" for more information on the impact of adopting ASU 2016-09. There were no purchases of our common stock during the six months ended January 31, 2018 or 2017 . See Note (17) - "Stockholders’ Equity" for more information. Weighted average stock options, RSUs and restricted stock outstanding of 1,812,000 and 2,173,000 for the three months ended January 31, 2018 and 2017 , respectively, and 1,821,000 and 2,305,000 for the six months ended January 31, 2018 and 2017 , respectively, were not included in our diluted EPS calculation because their effect would have been anti-dilutive. Our EPS calculations exclude 259,000 and 237,000 weighted average performance shares outstanding for the three months ended January 31, 2018 and 2017 , respectively, and 211,000 and 229,000 weighted average performance shares outstanding for the six months ended January 31, 2018 and 2017 , respectively, as the performance conditions have not yet been satisfied. However, the compensation expense related to these awards is included in net income (the numerator) for EPS calculations for each respective period. The following table reconciles the numerators and denominators used in the basic and diluted EPS calculations: Three months ended January 31, Six months ended January 31, 2018 2017 2018 2017 Numerator: Net income for basic calculation $ 15,761,000 6,585,000 14,101,000 4,096,000 Numerator for diluted calculation $ 15,761,000 6,585,000 14,101,000 4,096,000 Denominator: Denominator for basic calculation 23,816,000 23,428,000 23,805,000 23,406,000 Effect of dilutive securities: Stock-based awards 137,000 17,000 137,000 21,000 Denominator for diluted calculation 23,953,000 23,445,000 23,942,000 23,427,000

Accounts Receivable

Accounts Receivable	6 Months Ended
	Jan. 31, 2018
Accounts Receivable Additional Disclosures [Abstract]
Accounts Receivable	Accounts Receivable Accounts receivable consist of the following at: January 31, 2018 July 31, 2017 Billed receivables from commercial and international customers $ 68,478,000 71,404,000 Unbilled receivables from commercial and international customers 14,726,000 24,668,000 Billed receivables from the U.S. government and its agencies 21,235,000 18,497,000 Unbilled receivables from the U.S. government and its agencies 15,410,000 11,693,000 Total accounts receivable 119,849,000 126,262,000 Less allowance for doubtful accounts 1,876,000 1,300,000 Accounts receivable, net $ 117,973,000 124,962,000 Unbilled receivables relate to contracts-in-progress for which revenue has been recognized but we have not yet billed the customer for work performed. We had $125,000 and $118,000 of retainage included in unbilled receivables at January 31, 2018 and July 31, 2017 , respectively, and management estimates that substantially all of the unbilled receivables at January 31, 2018 will be billed and collected within one year . Of the unbilled receivables from commercial and international customers at January 31, 2018 and July 31, 2017 , approximately $2,012,000 and $2,995,000 , respectively, relates to a large over-the-horizon microwave system contract with our large U.S. prime contractor customer (all of which related to our North African country end-customer). As of January 31, 2018 , the U.S. government (and its agencies) and Verizon Communications Inc. (through various divisions and, collectively, "Verizon") represented 30.6% and 12.0% , respectively, of total accounts receivable. As of July 31, 2017 , except for the U.S. government (and its agencies), which represented 23.9% of total accounts receivable, there were no other customers which accounted for greater than 10.0% of total accounts receivable.

Inventories

Inventories	6 Months Ended
	Jan. 31, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories Inventories consist of the following at: January 31, 2018 July 31, 2017 Raw materials and components $ 52,592,000 50,569,000 Work-in-process and finished goods 35,162,000 26,053,000 Total inventories 87,754,000 76,622,000 Less reserve for excess and obsolete inventories 16,047,000 16,019,000 Inventories, net $ 71,707,000 60,603,000 As of January 31, 2018 and July 31, 2017 , the amount of inventory directly related to long-term contracts (including contracts-in-progress) was $1,420,000 and $2,148,000 , respectively. As of January 31, 2018 and July 31, 2017 , $1,528,000 and $1,718,000 , respectively, of the inventory balance above related to contracts from third party commercial customers who outsource their manufacturing to us.

Accrued Expenses and Other Curr

Accrued Expenses and Other Current Liabilities	6 Months Ended
	Jan. 31, 2018
Accrued Liabilities, Current [Abstract]
Accrued Expenses and Other Current Liabilities	Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities consist of the following at: January 31, 2018 July 31, 2017 Accrued wages and benefits $ 20,911,000 19,622,000 Accrued warranty obligations 12,481,000 17,617,000 Accrued legal costs 7,747,000 8,402,000 Accrued contract costs 6,439,000 8,644,000 Accrued commissions and royalties 2,328,000 3,600,000 Other 10,679,000 10,725,000 Accrued expenses and other current liabilities $ 60,585,000 68,610,000 Accrued legal costs as of January 31, 2018 and July 31, 2017 include $3,623,000 and $4,120,000 , respectively, related to estimated costs associated with certain TeleCommunication Systems, Inc. ("TCS") intellectual property matters. The accrued potential settlement costs do not reflect the final amounts we may actually pay. Ongoing legal costs associated with defending legacy TCS intellectual property matters and the ultimate resolution could vary and have a material adverse effect on our future consolidated results of operations, financial position or cash flows. TCS intellectual property matters are discussed in more detail in Note (18) - "Legal Proceedings and Other Matters. " Accrued contract costs represent direct and indirect costs on contracts as well as estimates of amounts owed for invoices not yet received from vendors or reflected in accounts payable. Accrued warranty obligations relate to estimated liabilities for warranty coverage that we provide to our customers. We generally provide warranty coverage for some of our products for a period of at least one year from the date of delivery. We record a liability for estimated warranty expense based on historical claims, product failure rates, a consideration of contractual obligations, future costs to resolve software issues and other factors. Some of our product warranties are provided under long-term contracts, the costs of which are incorporated into our estimates of total contract costs. Changes in our current accrued warranty obligations during the six months ended January 31, 2018 and 2017 were as follows: Six months ended January 31, 2018 2017 Balance at beginning of period $ 17,617,000 15,362,000 Provision for warranty obligations 2,278,000 3,234,000 Charges incurred (3,914,000 ) (3,782,000 ) Warranty settlement and reclass (see below) (3,500,000 ) — Adjustments to TCS pre-acquisition contingent liability — 4,200,000 Balance at end of period $ 12,481,000 19,014,000 Our current accrued warranty obligations at January 31, 2018 and July 31, 2017 include $5,234,000 and $9,909,000 , respectively, of warranty obligations for a small product line that we refer to as the TCS 911 call handling software solution. This solution was licensed to customers prior to our acquisition of TCS. During the six months ended January 31, 2018 , we entered into a full and final warranty settlement with AT&T, the largest customer/distributor of this product line, pursuant to which we issued thirty-six credits to AT&T of $153,000 which AT&T can apply on a monthly basis to purchases of solutions from us, beginning October 2017 through September 2020. As of January 31, 2018 , the total present value of these monthly credits is $4,361,000 , of which $1,521,000 is included in our current accrued warranty obligations and $2,840,000 is reflected in other liabilities (non-current) on our Condensed Consolidated Balance Sheet. In connection with this favorable settlement, during the six months ended January 31, 2018 , we recorded a benefit to cost of sales of $660,000 .

Acquisition-Related Restructuri

Acquisition-Related Restructuring Plans	6 Months Ended
	Jan. 31, 2018
Restructuring and Related Activities [Abstract]
Acquisition-Related Restructuring Plans	Acquisition-Related Restructuring Plans Radyne In connection with our August 1, 2008 acquisition of Radyne, we adopted a restructuring plan for which we recorded $2,713,000 of estimated restructuring costs. Of this amount, $613,000 related to severance for Radyne employees which was paid in fiscal 2009. The remaining estimated amounts relate to facility exit costs and were determined as follows: At August 1, 2008 Total non-cancelable lease obligations $ 12,741,000 Less: Estimated sublease income 8,600,000 Total net estimated facility exit costs 4,141,000 Less: Interest expense to be accreted 2,041,000 Present value of estimated facility exit costs $ 2,100,000 Our total non-cancelable lease obligations were based on the actual lease term which runs from November 1, 2008 through October 31, 2018 . We estimated sublease income based on (i) the terms of a fully executed sublease agreement that expired on October 31, 2015 , and (ii) our assessment of future uncertainties relating to the commercial real estate market. Based on our assessment of commercial real estate market conditions, we currently believe that it is not probable that we will be able to sublease the facility for the remaining lease term. As such, in accordance with grandfathered accounting standards that were not incorporated into the FASB’s ASC, we recorded these costs, at fair value, as assumed liabilities as of August 1, 2008, with a corresponding increase to goodwill. As of January 31, 2018 , the amount of the acquisition-related restructuring reserve is as follows: Cumulative Present value of estimated facility exit costs at August 1, 2008 $ 2,100,000 Cash payments made (11,393,000 ) Cash payments received 8,600,000 Accreted interest recorded 1,886,000 Liability recorded as of period end as accrued expenses and other current liabilities in the Condensed Consolidated Balance Sheet $ 1,193,000 As of July 31, 2017 , the present value of the estimated facility exit costs was $1,941,000 . During the six months ended January 31, 2018 , we made cash payments of $805,000 . Interest accreted for the three and six months ended January 31, 2018 and 2017 was $25,000 and $57,000 , respectively, and $51,000 and $107,000 , respectively, and is included in interest expense for each respective fiscal period. Future cash payments associated with our restructuring plan are summarized below: As of January 31, 2018 Future lease payments to be made $ 1,193,000 Interest expense to be accreted in future periods 154,000 Total remaining payments $ 1,347,000 TCS In connection with our February 23, 2016 acquisition of TCS, we continue to implement a tactical shift in strategy in our Government Solutions segment and have initiated certain cost reduction actions. To date, we have incurred an immaterial amount of severance and retention costs related to our shift in strategy.

Secured Credit Facility

Secured Credit Facility	6 Months Ended
	Jan. 31, 2018
Line of Credit Facility [Abstract]
Secured Credit Facility	Secured Credit Facility On February 23, 2016 , in connection with our acquisition of TCS, we entered into a $400,000,000 secured credit facility (the "Secured Credit Facility") with a syndicate of lenders. The Secured Credit Facility, as amended June 6, 2017 (the "June 2017 Amendment"), comprises a senior secured term loan A facility of $250,000,000 (the "Term Loan Facility") and a secured revolving loan facility of up to $150,000,000 , including a $25,000,000 letter of credit sublimit (the "Revolving Loan Facility") and, together, with the Term Loan Facility, matures on February 23, 2021. The proceeds of these borrowings were primarily used to finance our acquisition of TCS, including the repayment of certain existing indebtedness of TCS. The Term Loan Facility requires mandatory quarterly repayments. During the six months ended January 31, 2018 and 2017 , we repaid $10,354,000 and $4,427,000 , respectively, principal amount of borrowings under the Term Loan Facility. Under the Revolving Loan Facility, we had outstanding balances ranging from $41,904,000 to $66,804,000 during the six months ended January 31, 2018 . As of January 31, 2018 and July 31, 2017 , amounts outstanding under our Secured Credit Facility, net, were as follows: January 31, 2018 July 31, 2017 Term Loan Facility $ 128,726,000 139,080,000 Less unamortized deferred financing costs related to Term Loan Facility 4,094,000 4,763,000 Term Loan Facility, net 124,632,000 134,317,000 Revolving Loan Facility 66,804,000 57,405,000 Amount outstanding under Secured Credit Facility, net 191,436,000 191,722,000 Less current portion of long-term debt 17,211,000 15,494,000 Non-current portion of long-term debt $ 174,225,000 176,228,000 Interest expense, including amortization of deferred financing costs, recorded during the three and six months ended January 31, 2018 and 2017 related to the Secured Credit Facility was $2,350,000 and $4,815,000 , respectively, and $2,708,000 and $5,883,000 , respectively, and reflects a blended interest rate of approximately 5.10% and 5.06% for the three months ended January 31, 2018 and 2017 , respectively, and 5.20% and 4.79% for the six months ended January 31, 2018 and 2017 , respectively. At January 31, 2018 , we had $2,660,000 of standby letters of credit outstanding under our Secured Credit Facility, as amended, related to our guarantees of future performance on certain customer contracts and no outstanding commercial letters of credit. The Revolving Loan Facility is primarily used for working capital and other general corporate purposes of the Company and its subsidiaries, including the issuance of letters of credit. Borrowings under the Secured Credit Facility, pursuant to terms defined in the Secured Credit Facility, shall be either (i) Alternate Base Rate ("ABR") borrowings, which bear interest from the applicable borrowing date at a rate per annum equal to (x) the greatest of (a) the Prime Rate in effect on such day, (b) the Federal Funds Effective Rate in effect on such day plus 0.50% per annum and (c) the Adjusted LIBO Rate on such day (or, if such day is not a business day, the immediately preceding business day) plus 1.00% per annum (provided that if the LIBO Rate is less than 1.00% , then the LIBO Rate shall be deemed to be 1.00% ), plus (y) the Applicable Rate, or (ii) Eurodollar borrowings, which bear interest from the applicable borrowing date at a rate per annum equal to (x) the Adjusted LIBO Rate for such interest period (provided that if the LIBO Rate is less than 1.00% , then the LIBO Rate shall be deemed to be 1.00% ) plus (y) the Applicable Rate. The Applicable Rate is determined based on a pricing grid that is dependent upon our leverage ratio as of the end of each fiscal quarter. The Secured Credit Facility contains customary representations, warranties and affirmative covenants and customary negative covenants, subject to negotiated exceptions, on (i) liens, (ii) investments, (iii) indebtedness, (iv) significant corporate changes, including mergers and acquisitions, (v) dispositions, (vi) restricted payments, including stockholder dividends, and (vii) certain other restrictive agreements. The Secured Credit Facility also contains certain financial covenants and customary events of default (subject to grace periods, as appropriate), such as payment defaults, cross-defaults to other material indebtedness, bankruptcy and insolvency, the occurrence of a defined change in control and the failure to observe the negative covenants and other covenants related to the operation of our business. The June 2017 Amendment is expected to result in increased operating and acquisition flexibility and simplify the calculations of our financial covenants. The June 2017 Amendment resulted in, among other things, that the: (i) Consolidated EBITDA definition more closely aligns with our Adjusted EBITDA metric by eliminating favorable adjustments to operating income related to settlements of TCS intellectual property matters; (ii) Leverage Ratio is calculated on a "gross" basis using the quotient of Total Indebtedness (excluding unamortized deferred financing costs) divided by our TTM Consolidated EBITDA. The prior Leverage Ratio was calculated on a "net" basis but did not include a reduction for any cash or cash equivalents above $50,000,000 ; (iii) Fixed Charge Coverage Ratio includes a deduction for all cash dividends, regardless of the amount of our cash and cash equivalents and the related allowable Quarterly Dividend Amount, as defined, will now align with our current quarterly dividend target of $0.10 per common share; (iv) Balloon or final payment of the Term Loan Facility (which is not due until February 23, 2021) was reduced by $22,500,000 through increased borrowings from the Revolving Loan Facility (which does not expire until February 23, 2021); and (v) Leverage Ratios will be adjusted, in certain conditions, to provide for additional flexibility for us to make acquisitions. In connection with the June 2017 Amendment, there were no changes to: (i) the committed borrowing capacity; (ii) the maturity date; or (iii) interest rates payable (except that the interest rate pricing grid will now be based on the new Leverage Ratio). Also, the June 2017 Amendment did not result in an extinguishment for accounting purposes (as such term is defined in ASC 470 - " Debt" ); instead, the June 2017 Amendment was accounted for as a debt modification. As a result, deferred financing costs (including incremental fees for the June 2017 Amendment) will continue to be amortized over the remaining maturity term of the Secured Credit Facility. As of January 31, 2018 , our Leverage Ratio was 2.78 x TTM Consolidated EBITDA compared to the maximum allowable Leverage Ratio of 3.35 x TTM Consolidated EBITDA. During the second half of fiscal 2018, the maximum allowable Leverage Ratio will decrease each quarter until reaching 3.00 x TTM Consolidated EBITDA in the fourth quarter of fiscal 2018, with no further reductions thereafter. Our Fixed Charge Coverage Ratio as of January 31, 2018 was 2.09 x compared to the minimum required Fixed Charge Coverage Ratio of 1.25 x. The Fixed Charge Coverage Ratio will not change for the remaining term of the Secured Credit Facility, as amended. Given our expected future business performance, we anticipate maintaining compliance with the terms and financial covenants in our Secured Credit Facility, as amended, for the foreseeable future. The obligations under the Secured Credit Facility, as amended, are guaranteed by certain of our domestic subsidiaries (the "Subsidiary Guarantors"). As collateral security for amounts outstanding under our Secured Credit Facility, as amended, and the guarantees thereof, we and our Subsidiary Guarantors have granted to an administrative agent, for the benefit of the lenders, a lien on, and first priority security interest in, substantially all of our tangible and intangible assets. Capitalized terms used but not defined herein have the meanings set forth for such terms in the Secured Credit Facility, dated as of February 23, 2016, and the First Amendment of the Secured Credit Facility, dated as of June 6, 2017, both of which have been documented and filed with the SEC.

Capital Lease Obligations

Capital Lease Obligations	6 Months Ended
	Jan. 31, 2018
Capital Leases [Abstract]
Capital Lease Obligations	Capital Lease Obligations We lease certain equipment under capital leases. As of January 31, 2018 and July 31, 2017 , the net book value of the leased assets which collateralize the capital lease obligations was $3,815,000 and $5,419,000 , respectively, and consisted primarily of machinery and equipment. As of January 31, 2018 , our capital lease obligations reflect a blended interest rate of approximately 5.9% . Our capital leases generally contain provisions whereby we can purchase the equipment at the end of the lease for a one dollar buyout. Depreciation of leased assets is included in depreciation expense. Future minimum payments under capital lease obligations consisted of the following at January 31, 2018 : Remainder of fiscal 2018 $ 1,061,000 Fiscal 2019 1,492,000 Fiscal 2020 318,000 Fiscal 2021 and beyond — Total minimum lease payments 2,871,000 Less: amounts representing interest 128,000 Present value of net minimum lease payments 2,743,000 Current portion of capital lease obligations 1,858,000 Non-current portion of capital lease obligations $ 885,000

Income Taxes

Income Taxes	6 Months Ended
	Jan. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes On December 22, 2017, H.R.1, also known as the Tax Cuts and Jobs Act ("Tax Reform") was enacted in the U.S. Tax Reform significantly lowered the amount of our current and future income tax expense primarily due to the reduction in the U.S. statutory income tax rate from 35.0% to 21.0%. This provision went into effect on January 1, 2018 and required us to remeasure our deferred tax assets and liabilities. In fiscal 2019 and beyond, Tax Reform will result in the loss of our ability to take the domestic production activities deduction, which has been repealed, and is also likely to result in lower tax deductions for certain executive compensation expenses. For fiscal 2018, we will be subject to a 35.0% statutory income tax rate with respect to the period August 1, 2017 through December 31, 2017 and a 21.0% statutory income tax rate with respect to the period January 1, 2018 through July 31, 2018, or a blended statutory income tax rate for fiscal 2018 of approximately 27.0% . As such, our effective tax rate for accounting purposes in fiscal 2018, excluding discrete items, is now expected to approximate 27.75% as compared to our prior estimate of 34.5% . We expect to fully benefit from the lower statutory income tax rate in fiscal 2019 and thereafter. In connection with Tax Reform, during the three months ended January 31, 2018, we recorded an estimated net discrete tax benefit of $14,018,000 , primarily related to the remeasurement of deferred tax liabilities associated with non-deductible amortization related to intangible assets. This remeasurement was recorded pursuant to ASC 740 "Income Taxes" and SEC Staff Accounting Bulletin ("SAB") 118, using estimates based on reasonable and supportable assumptions and available information as of the reporting date. As such, we expect to finalize this net discrete tax benefit during the second half of fiscal 2018. In addition, it is possible that the Internal Revenue Service ("IRS") will issue clarifying or interpretive guidance related to Tax Reform, which may ultimately result in a change to our estimated income tax. At January 31, 2018 and July 31, 2017 , total unrecognized tax benefits were $9,043,000 and $8,681,000 , respectively, including interest of $147,000 and $95,000 , respectively. At January 31, 2018 and July 31, 2017 , $2,558,000 and $2,515,000 , respectively, of our unrecognized tax benefits were recorded as non-current income taxes payable in our Condensed Consolidated Balance Sheets. The remaining unrecognized tax benefits of $6,485,000 and $6,166,000 at January 31, 2018 and July 31, 2017 , respectively, were presented as an offset to the associated non-current deferred tax assets in our Condensed Consolidated Balance Sheets. Of the total unrecognized tax benefits, $8,351,000 and $7,727,000 , at January 31, 2018 and July 31, 2017 , respectively, net of the reversal of the federal benefit recognized as a deferred tax asset relating to state reserves, excluding interest, would positively impact our effective tax rate, if recognized. Unrecognized tax benefits result from income tax positions taken or expected to be taken on our income tax returns for which a tax benefit has not been recorded in our condensed consolidated financial statements. Our policy is to recognize interest and penalties relating to uncertain tax positions in income tax expense. In November 2017, we received notification from the IRS that it will audit our federal income tax return for fiscal 2016. Our federal income tax return for fiscal 2015 is also subject to potential future IRS audit. None of our state income tax returns prior to fiscal 2013 are subject to audit. TCS’s federal income tax returns for tax years 2014 and 2015 and the tax period from January 1, 2016 to February 23, 2016 are subject to potential IRS audit. None of TCS’s state income tax returns prior to calendar year 2013 are subject to audit. The results of the IRS tax audit for fiscal 2016, future tax assessments or settlements could have a material adverse effect on our consolidated results of operations and financial condition.

Stock-Based Compensation

Stock-Based Compensation	6 Months Ended
	Jan. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	Stock Based Compensation Overview We issue stock-based awards to certain of our employees and our Board of Directors pursuant to our 2000 Stock Incentive Plan, as amended, (the "Plan") and our 2001 Employee Stock Purchase Plan (the "ESPP"), and recognize related stock-based compensation in our condensed consolidated financial statements. The Plan provides for the granting to employees and consultants of Comtech (including prospective employees and consultants): (i) incentive and non-qualified stock options, (ii) restricted stock units ("RSUs"), (iii) RSUs with performance measures (which we refer to as "performance shares"), (iv) restricted stock, (v) stock units (reserved for issuance to non-employee directors) and share units (reserved for issuance to employees) (collectively, "share units") and (vi) stock appreciation rights ("SARs"), among other types of awards. Our non-employee directors are eligible to receive non-discretionary grants of stock-based awards, subject to certain limitations. On August 1, 2017, we adopted ASU 2016-09, which amended several aspects of the accounting for and reporting of our share-based payment transactions, including: Excess tax benefits and shortfalls - ASU 2016-09 requires that all tax effects related to our share-based awards be recognized in the Condensed Consolidated Statement of Operations. ASU 2016-09 also removes the prior requirement to delay recognition of excess tax benefits until it reduces current taxes payable; instead, we are now required to recognize excess tax benefits as discrete items in the interim period in which they occur, subject to normal valuation allowance considerations. As ASU 2016-09 eliminated the concept of accumulated hypothetical tax benefits, excess tax benefits and shortfalls are no longer recognized in stockholders’ equity. As a result, ASU 2016-09 is expected to result in future volatility of our income tax expense (as the future tax effects of share-based awards will be dependent on the price of our common stock at the time of settlement). Additionally, on a prospective basis, excess income tax benefits from the settlement of share-based awards are presented as a cash inflow from operating activities in our Condensed Consolidated Statement of Cash Flows. Diluted earnings per share - Prior to the adoption of ASU 2016-09, in addition to considering the amount an employee must pay upon assumed exercise of stock-based awards and the amount of stock-based compensation cost attributed to future services and not yet recognized, when calculating our diluted earnings per share, the assumed proceeds also included the amount of excess tax benefits, if any, that would have been credited to additional paid-in capital assuming exercise of in-the-money stock-based awards. Effective with our adoption of ASU 2016-09, excess tax benefits are to be excluded from the calculation on a prospective basis. As a result, the denominator for our diluted calculations could increase in the future as compared to prior calculations. Forfeitures - As permitted by ASU 2016-09, we elected to continue to estimate forfeitures of share-based awards. Statutory Tax Withholding Requirements - ASU 2016-09 now allows us, when net settling share-based awards, to withhold an amount up to the employees’ maximum individual tax rate in the relevant jurisdiction, without resulting in liability classification of the award. To qualify, we must have at least some withholding obligation. This aspect of adopting ASU 2016-09 did not have any material impact on us. However, with respect to cash payments that we make to taxing authorities on behalf of employees for such shares withheld, on a retrospective basis, we are required to present such payments as a cash outflow from financing activities in our Condensed Consolidated Statements of Cash Flows (as opposed to operating activities). As of January 31, 2018 , the aggregate number of shares of common stock which may be issued, pursuant to the Plan, may not exceed 10,362,500 . Stock options granted may not have a term exceeding ten years or, in the case of an incentive stock award granted to a stockholder who owns stock representing more than 10.0% of the voting power, no more than five years . We expect to settle all outstanding awards under the Plan and employee purchases under the ESPP with the issuance of new shares of our common stock. As of January 31, 2018 , we had granted stock-based awards pursuant to the Plan representing the right to purchase and/or acquire an aggregate of 8,086,920 shares (net of 3,840,518 expired and canceled awards), of which an aggregate of 5,310,722 have been exercised or settled. As of January 31, 2018 , the following stock-based awards, by award type, were outstanding: Stock options 1,805,485 Performance shares 277,881 RSUs and restricted stock 425,226 Share units 267,606 Total 2,776,198 Our ESPP provides for the issuance of up to 800,000 shares of our common stock. Our ESPP is intended to provide our eligible employees the opportunity to acquire our common stock at 85% of fair market value at the date of issuance. Through January 31, 2018 , we have cumulatively issued 722,961 shares of our common stock to participating employees in connection with our ESPP. Stock-based compensation for awards issued is reflected in the following line items in our Condensed Consolidated Statements of Operations: Three months ended January 31, Six months ended January 31, 2018 2017 2018 2017 Cost of sales $ 51,000 58,000 91,000 106,000 Selling, general and administrative expenses 954,000 878,000 1,608,000 1,729,000 Research and development expenses 75,000 83,000 128,000 154,000 Stock-based compensation expense before income tax benefit 1,080,000 1,019,000 1,827,000 1,989,000 Estimated income tax benefit (234,000 ) (361,000 ) (494,000 ) (702,000 ) Net stock-based compensation expense $ 846,000 658,000 1,333,000 1,287,000 Stock-based compensation for equity-classified awards is measured at the date of grant, based on an estimate of the fair value of the award and is generally expensed over the vesting period of the award. At January 31, 2018 , unrecognized stock-based compensation of $ 9,015,000 , net of estimated forfeitures of $ 902,000 , is expected to be recognized over a weighted average period of 3.0 years. Total stock-based compensation capitalized and included in ending inventory at both January 31, 2018 and July 31, 2017 was $12,000 . There are no liability-classified stock-based awards outstanding as of January 31, 2018 or July 31, 2017 . Stock-based compensation expense (benefit), by award type, is summarized as follows: Three months ended January 31, Six months ended January 31, 2018 2017 2018 2017 Stock options $ 268,000 386,000 536,000 632,000 Performance shares 371,000 372,000 483,000 866,000 RSUs and restricted stock 390,000 224,000 774,000 412,000 ESPP 51,000 37,000 96,000 79,000 Share units — — (62,000 ) — Stock-based compensation expense before income tax benefit 1,080,000 1,019,000 1,827,000 1,989,000 Estimated income tax benefit (234,000 ) (361,000 ) (494,000 ) (702,000 ) Net stock-based compensation expense $ 846,000 658,000 1,333,000 1,287,000 ESPP stock-based compensation expense primarily relates to the 15% discount offered to participants in the ESPP. During the six months ended January 31, 2018 , we recorded a $62,000 net benefit which primarily represents the recoupment of certain share units. The estimated income tax benefit as shown in the above table was computed using income tax rates expected to apply when the awards are settled. Such deferred tax asset was recorded net as part of our non-current deferred tax liability in our Condensed Consolidated Balance Sheet as of January 31, 2018 and July 31, 2017 . The actual income tax benefit recognized for tax reporting is based on the fair market value of our common stock at the time of settlement and can significantly differ from the estimated income tax benefit recorded for financial reporting. Stock Options The following table summarizes the Plan's activity during the six months ended January 31, 2018 : Awards (in Shares) Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at July 31, 2017 1,855,875 $ 28.60 Expired/canceled (41,040 ) 28.97 Outstanding at October 31, 2017 1,814,835 28.59 Expired/canceled (9,350 ) 29.02 Outstanding at January 31, 2018 1,805,485 $ 28.59 5.06 $ 11,000 Exercisable at January 31, 2018 1,366,876 $ 28.61 4.55 $ 4,000 Vested and expected to vest at January 31, 2018 1,755,904 $ 28.58 5.01 $ 10,000 Stock options outstanding as of January 31, 2018 have exercise prices ranging from $ 20.90 to $ 33.94 , representing the fair market value of our common stock on the date of grant, a contractual term of five or ten years and a vesting period of three or five years. There were no stock options granted or exercised during the six months ended January 31, 2018 and 2017 . As there were no exercises during the six months ended January 31, 2018 and 2017 , there were no net settlements of stock options or the related issuance of common stock during the respective periods. Performance Shares, RSUs, Restricted Stock and Share Unit Awards The following table summarizes the Plan's activity relating to performance shares, RSUs, restricted stock and share units: Awards (in Shares) Weighted Average Grant Date Fair Value Aggregate Intrinsic Value Outstanding at July 31, 2017 830,197 $ 16.95 Granted 307,194 18.25 Settled (100,321 ) 20.67 Forfeited (61,520 ) 18.88 Outstanding at October 31, 2017 975,550 16.86 Settled (526 ) 11.40 Forfeited (4,311 ) 15.26 Outstanding at January 31, 2018 970,713 $ 16.86 $ 20,997,000 Vested at January 31, 2018 309,853 $ 17.55 $ 6,702,000 Vested and expected to vest at January 31, 2018 932,413 $ 16.88 $ 20,168,000 The total intrinsic value relating to fully-vested awards settled during the three months ended January 31, 2018 and 2017 was $11,000 and $208,000 , respectively. The total intrinsic value relating to fully-vested awards settled during the six months ended January 31, 2018 and 2017 was $1,948,000 and $633,000 , respectively. Performance shares granted to employees prior to fiscal 2014 generally vest over a 5.3 year period, beginning on the date of grant once pre-established performance goals were attained, and are convertible into shares of our common stock at the time of vesting, on a one -for-one basis for no cash consideration. The performance shares granted to employees since fiscal 2014 principally vest over a three -year performance period, if pre-established performance goals are attained or as specified pursuant to the Plan and related agreements. As of January 31, 2018 , the number of outstanding performance shares included in the above table, and the related compensation expense prior to consideration of estimated pre-vesting forfeitures, assume achievement of the pre-established goals at a target level. RSUs and restricted stock granted to non-employee directors have a vesting period of three years and are convertible into shares of our common stock generally at the time of termination, on a one -for-one basis for no cash consideration, or earlier under certain circumstances. RSUs granted to employees have a vesting period of five years and are convertible into shares of our common stock generally at the time of vesting, on a one -for-one basis for no cash consideration. Share units granted prior to July 31, 2017 were vested when issued and are convertible into shares of our common stock generally at the time of termination, on a one -for-one basis for no cash consideration, or earlier under certain circumstances. Share units granted on or after July 31, 2017 were granted to certain employees in lieu of fiscal 2017 non-equity incentive compensation and are convertible into shares of our common stock on the one -year anniversary of the grant date. Cumulatively through January 31, 2018 , 14,777 share units granted have been settled. The fair value of performance shares, RSUs, restricted stock and share units is determined using the closing market price of our common stock on the date of grant, less the present value of any estimated future dividend equivalents such awards are not entitled to receive and an applicable estimated discount for post vesting restrictions. RSUs, performance shares and restricted stock granted since fiscal 2013 are entitled to dividend equivalents unless forfeited before vesting occurs; however, performance shares granted in fiscal 2013 were not entitled to such dividend equivalents until our Board of Directors determined that the pre-established performance goals were met. Share units granted prior to fiscal 2014 are not entitled to dividend equivalents. Share units granted since fiscal 2014 are entitled to dividend equivalents while the underlying shares are unissued. Dividend equivalents are subject to forfeiture, similar to the terms of the underlying stock-based awards, and are payable in cash generally at the time of settlement of the underlying shares into our common stock. During the six months ended January 31, 2018 , we accrued $155,000 of dividend equivalents and paid out $128,000 . Accrued dividend equivalents were recorded as a reduction to retained earnings. As of January 31, 2018 and July 31, 2017 , accrued dividend equivalents were $581,000 and $554,000 , respectively. We recorded $71,000 of income tax expense in our Condensed Consolidated Statements of Operations for the six months ended January 31, 2018 , which represents net income tax shortfalls from the settlement of stock-based awards and the reversal of deferred tax assets associated with expired and unexercised stock-based awards. During the six months ended January 31, 2017 , net income tax shortfalls from similar items totaled $601,000 and, pursuant to prior GAAP, were recorded as a reduction to additional paid-in capital.

Customer and Geographic Informa

Customer and Geographic Information	6 Months Ended
	Jan. 31, 2018
Geographic Areas, Revenues from External Customers [Abstract]
Customer and Geographic Information	Customer and Geographic Information Sales by geography and customer type, as a percentage of consolidated net sales, are as follows: Three months ended January 31, Six months ended January 31, 2018 2017 2018 2017 U.S. government 31.5 % 32.1 % 32.0 % 33.7 % Domestic 42.0 % 35.8 % 43.1 % 36.3 % Total United States 73.5 % 67.9 % 75.1 % 70.0 % International 26.5 % 32.1 % 24.9 % 30.0 % Total 100.0 % 100.0 % 100.0 % 100.0 % Sales to U.S. government customers include sales to the U.S. Department of Defense ("DoD"), intelligence and civilian agencies, as well as sales directly to or through prime contractors. Domestic sales include sales to commercial customers, as well as to U.S. state and local governments. Included in domestic sales, are sales to Verizon which represented 10.5% and 11.1% of consolidated net sales for the three and six months ended January 31, 2018 , respectively. Sales to Verizon were less than 10.0% of consolidated net sales for the three and six months ended January 31, 2017 . International sales for the three months ended January 31, 2018 and 2017 (which include sales to U.S. domestic companies for inclusion in products that are sold to international customers) were $35,400,000 and $44,623,000 , respectively. International sales for the six months ended January 31, 2018 and 2017 (which include sales to U.S. domestic companies for inclusion in products that are sold to international customers) were $63,714,000 and $82,457,000 , respectively. Except for the U.S., no individual country (including sales to U.S. domestic companies for inclusion in products that are sold to a foreign country) represented more than 10% of consolidated net sales for the three and six months ended January 31, 2018 and 2017 .

Segment Information

Segment Information	6 Months Ended
	Jan. 31, 2018
Segment Reporting [Abstract]
Segment Information	Segment Information Reportable operating segments are determined based on Comtech’s management approach. The management approach, as defined by FASB ASC 280 "Segment Reporting" is based on the way that the chief operating decision-maker ("CODM") organizes the segments within an enterprise for making decisions about resources to be allocated and assessing their performance. Our CODM, for purposes of FASB ASC 280, is our Chief Executive Officer and President. Our Commercial Solutions segment serves commercial customers and smaller government customers, such as state and local governments, that require advanced communications technologies to meet their needs. This segment also serves certain large government customers (including the U.S. government) when they have requirements for off-the-shelf commercial equipment. Commercial solutions products include satellite earth station communications equipment such as modems and traveling wave tube amplifiers, public safety technologies including those that are utilized in next generation 911 systems and enterprise technologies such as trusted location and text-messaging platforms. Our Government Solutions segment serves large U.S. and foreign government end-users that require mission critical technologies and systems. Government solutions products include command and control technologies (such as mobile satellite transceivers used on the Blue Force Tracking-1 and Blue Force Tracking-2 programs), troposcatter technologies systems (such as digital troposcatter multiplexers, digital over-the-horizon modems, troposcatter systems and frequency converter systems) and RF power and switching technologies products (such as solid-state high-power narrow and broadband amplifiers, enhanced position location reporting system ("EPLRS") amplifier assemblies, identification friend or foe amplifiers and amplifiers used in the counteraction of improvised explosive devices). Our CODM primarily uses a metric that we refer to as Adjusted Earnings Before Interest, Taxes, Depreciation and Amortization ("Adjusted EBITDA") to measure an operating segment’s performance and to make decisions about resources to be allocated. Our Adjusted EBITDA metric does not consider any allocation of the following: income taxes, interest (income) and other expense, interest expense, amortization of stock-based compensation, amortization of intangibles, depreciation expense, settlement of intellectual property litigation, acquisition plan expenses or strategic alternatives analysis expenses and other. These items, while periodically affecting our results, may vary significantly from period to period and may have a disproportionate effect in a given period, thereby affecting the comparability of results. Our Adjusted EBITDA is also used by our management in assessing the Company's operating results. Although closely aligned, the Company's definition of Adjusted EBITDA is different than the Consolidated EBITDA (as such term is defined in our Secured Credit Facility, as amended) utilized for financial covenant calculations and also may differ from the definition of EBITDA or Adjusted EBITDA used by other companies and, therefore, may not be comparable to similarly titled measures used by other companies. Operating segment information, along with a reconciliation of segment net income (loss) and consolidated net income to Adjusted EBITDA is presented in the tables below: Three months ended January 31, 2018 Commercial Solutions Government Solutions Unallocated Total Net sales $ 85,824,000 47,907,000 — $ 133,731,000 Operating income (loss) $ 8,922,000 (299,000 ) (3,740,000 ) $ 4,883,000 Net income (loss) $ 8,958,000 (313,000 ) 7,116,000 $ 15,761,000 Benefit from income taxes (7,000 ) — (13,342,000 ) (13,349,000 ) Interest (income) and other expense (58,000 ) 14,000 (4,000 ) (48,000 ) Interest expense 29,000 — 2,490,000 2,519,000 Amortization of stock-based compensation — — 1,080,000 1,080,000 Amortization of intangibles 4,424,000 844,000 — 5,268,000 Depreciation 2,457,000 588,000 272,000 3,317,000 Adjusted EBITDA $ 15,803,000 1,133,000 (2,388,000 ) $ 14,548,000 Purchases of property, plant and equipment $ 1,418,000 189,000 121,000 $ 1,728,000 Total assets at January 31, 2018 $ 602,872,000 178,970,000 40,809,000 $ 822,651,000 Three months ended January 31, 2017 Commercial Solutions Government Solutions Unallocated Total Net sales $ 82,103,000 56,925,000 — $ 139,028,000 Operating income $ 5,864,000 2,338,000 4,647,000 $ 12,849,000 Net income (loss) $ 5,730,000 2,362,000 (1,507,000 ) $ 6,585,000 Provision for income taxes 135,000 — 3,351,000 3,486,000 Interest (income) and other expense (60,000 ) (23,000 ) 9,000 (74,000 ) Interest expense 59,000 (1,000 ) 2,794,000 2,852,000 Amortization of stock-based compensation — — 1,019,000 1,019,000 Amortization of intangibles 4,413,000 1,619,000 — 6,032,000 Depreciation 2,429,000 752,000 387,000 3,568,000 Settlement of intellectual property litigation — — (9,979,000 ) (9,979,000 ) Adjusted EBITDA $ 12,706,000 4,709,000 (3,926,000 ) $ 13,489,000 Purchases of property, plant and equipment $ 1,652,000 413,000 7,000 $ 2,072,000 Total assets at January 31, 2017 $ 620,147,000 197,035,000 66,326,000 $ 883,508,000 Six months ended January 31, 2018 Commercial Solutions Government Solutions Unallocated Total Net sales $ 161,938,000 93,362,000 — $ 255,300,000 Operating income (loss) $ 13,714,000 (940,000 ) (7,669,000 ) $ 5,105,000 Net income (loss) $ 13,660,000 (955,000 ) 1,396,000 $ 14,101,000 Benefit from income taxes (1,000 ) — (14,093,000 ) (14,094,000 ) Interest (income) and other expense (10,000 ) 12,000 (11,000 ) (9,000 ) Interest expense 65,000 3,000 5,039,000 5,107,000 Amortization of stock-based compensation — — 1,827,000 1,827,000 Amortization of intangibles 8,849,000 1,688,000 — 10,537,000 Depreciation 4,900,000 1,204,000 559,000 6,663,000 Adjusted EBITDA $ 27,463,000 1,952,000 (5,283,000 ) $ 24,132,000 Purchases of property, plant and equipment $ 2,377,000 282,000 177,000 $ 2,836,000 Total assets at January 31, 2018 $ 602,872,000 178,970,000 40,809,000 $ 822,651,000 Six months ended January 31, 2017 Commercial Solutions Government Solutions Unallocated Total Net sales $ 158,281,000 116,533,000 — $ 274,814,000 Operating income (loss) $ 8,962,000 4,838,000 (1,679,000 ) $ 12,121,000 Net income (loss) $ 8,743,000 4,865,000 (9,512,000 ) $ 4,096,000 Provision for income taxes 158,000 — 1,766,000 1,924,000 Interest (income) and other expense (62,000 ) (26,000 ) 12,000 (76,000 ) Interest expense 123,000 (1,000 ) 6,055,000 6,177,000 Amortization of stock-based compensation — — 1,989,000 1,989,000 Amortization of intangibles 8,849,000 3,238,000 — 12,087,000 Depreciation 5,016,000 1,503,000 798,000 7,317,000 Settlement of intellectual property litigation — — (9,979,000 ) (9,979,000 ) Adjusted EBITDA $ 22,827,000 9,579,000 (8,871,000 ) $ 23,535,000 Purchases of property, plant and equipment $ 3,647,000 423,000 77,000 $ 4,147,000 Total assets at January 31, 2017 $ 620,147,000 197,035,000 66,326,000 $ 883,508,000 Unallocated expenses result from corporate expenses such as executive compensation, accounting, legal and other regulatory compliance related costs and also includes all of our amortization of stock-based compensation. In addition, during fiscal 2017, unallocated expenses also reflect the favorable adjustments to operating income related to the settlement of certain legacy TCS intellectual property matters. Interest expense for the three and six months ended January 31, 2018 and 2017 includes $2,350,000 and $4,815,000 , respectively, and $2,708,000 and $5,883,000 , respectively, related to our Secured Credit Facility, as amended, and includes the amortization of deferred financing costs. See Note (9) - "Secured Credit Facility" for further discussion of such debt. Intersegment sales for the three months ended January 31, 2018 and 2017 by the Commercial Solutions segment to the Government Solutions segment were $2,328,000 and $3,059,000 , respectively. Intersegment sales for the six months ended January 31, 2018 and 2017 by the Commercial Solutions segment to the Government Solutions segment were $4,949,000 and $6,485,000 , respectively. There were nominal sales by the Government Solutions segment to the Commercial Solutions segment for these periods. All intersegment sales are eliminated in consolidation and are excluded from the tables above. Unallocated assets at January 31, 2018 consist principally of cash and cash equivalents, income taxes receivable, corporate property, plant and equipment and deferred financing costs. Substantially all of our long-lived assets are located in the U.S.

Goodwill

Goodwill	6 Months Ended
	Jan. 31, 2018
Goodwill [Abstract]
Goodwill	Goodwill The following table represents goodwill by reportable operating segment as of January 31, 2018 and July 31, 2017 : Commercial Solutions Government Solutions Total Goodwill $ 231,440,000 $ 59,193,000 $ 290,633,000 In accordance with FASB ASC 350 "Intangibles - Goodwill and Other," we perform a goodwill impairment analysis at least annually (in the first quarter of each fiscal year), unless indicators of impairment exist in interim periods. If we fail the quantitative assessment of goodwill impairment ("quantitative assessment"), pursuant to our adoption of FASB ASU No. 2017-04 in fiscal 2017, we would be required to recognize an impairment loss equal to the amount that a reporting unit's carrying value exceeded its fair value; however, any loss recognized should not exceed the total amount of goodwill allocated to that reporting unit. On August 1, 2017 (the first day of our fiscal 2018 ), we performed our annual quantitative assessment using market participant assumptions to determine if the fair value of each of our reporting units with goodwill exceeded its carrying value. In making this assessment, we considered, among other things, expectations of projected net sales and cash flows, assumptions impacting the weighted average cost of capital, trends in trading multiples of comparable companies, changes in our stock price and changes in the carrying values of our reporting units with goodwill. We also considered overall business conditions. In performing the quantitative assessment, we estimated the fair value of each of our reporting units using a combination of the income and market approaches. The income approach, also known as the discounted cash flow ("DCF") method, utilizes the present value of cash flows to estimate fair value. The future cash flows for our reporting units were projected based on our estimates, at that time, of future revenues, operating income and other factors (such as working capital and capital expenditures). For purposes of conducting our impairment analysis, we assumed revenue growth rates and cash flow projections that are below our actual long-term expectations. The discount rates used in our DCF method were based on a weighted-average cost of capital ("WACC") determined from relevant market comparisons, adjusted upward for specific reporting unit risks (primarily the uncertainty of achieving projected operating cash flows). A terminal value growth rate was applied to the final year of the projected period and reflected our estimate of stable, perpetual growth. We then calculated a present value of the respective cash flows for each reporting unit to arrive at an estimate of fair value under the income approach. Under the market approach, we estimated a fair value based on comparable companies' market multiples of revenues and earnings before interest, taxes, depreciation and amortization and factored in a control premium. Finally, we compared our estimates of fair values to our August 1, 2017 total public market capitalization and assessed implied control premiums based on our common stock price of $18.47 as of August 1, 2017 . Based on our quantitative evaluation, we determined that our Commercial Solutions and Government Solutions reporting units had estimated fair values in excess of their carrying values of at least 17.8% and 52.9% , respectively, and concluded that our goodwill was not impaired and that neither of our two reporting units was at risk of failing the quantitative assessment. However, in order to sensitize our goodwill impairment test, we performed a second analysis using only the income approach and concluded that neither reporting units' goodwill was impaired or at risk of failing the quantitative assessment. It is possible that, during fiscal 2018 or beyond, business conditions (both in the U.S. and internationally) could deteriorate from the current state, our current or prospective customers could materially postpone, reduce or even forgo purchases of our products and services to a greater extent than we currently anticipate, or our common stock price could decline. A significant decline in our customers' spending that is greater than we anticipate or a shift in funding priorities may also have a negative effect on future orders, sales, income and cash flows and we might be required to perform a quantitative assessment during fiscal 2018 or beyond. If assumed net sales and cash flow projections are not achieved in future periods or our common stock price significantly declines from current levels, our Commercial Solutions and Government Solutions reporting units could be at risk of failing the quantitative assessment and goodwill assigned to the respective reporting units could be impaired. Any impairment charges that we may record in the future could be material to our results of operation and financial condition. In any event, we are required to perform the next annual goodwill impairment analysis on August 1, 2018 (the start of our fiscal 2019 ). If our assumptions and related estimates change in the future, or if we change our reporting unit structure or other events and circumstances change (e.g., a sustained decrease in the price of our common stock (considered on both absolute terms and relative to peers)), we may be required to record impairment charges when we perform these tests, or in other future periods.

Intangible Assets

Intangible Assets	6 Months Ended
	Jan. 31, 2018
Finite-Lived Intangible Assets, Net [Abstract]
Intangible Assets	Intangible Assets Intangible assets with finite lives are as follows: As of January 31, 2018 Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer relationships 20.3 $ 249,831,000 48,636,000 $ 201,195,000 Technologies 12.3 82,370,000 51,504,000 30,866,000 Trademarks and other 16.4 28,894,000 9,621,000 19,273,000 Total $ 361,095,000 109,761,000 $ 251,334,000 As of July 31, 2017 Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer relationships 20.3 $ 249,831,000 41,923,000 $ 207,908,000 Technologies 12.3 82,370,000 48,623,000 33,747,000 Trademarks and other 16.4 28,894,000 8,678,000 20,216,000 Total $ 361,095,000 99,224,000 $ 261,871,000 The weighted average amortization period in the above table excludes fully amortized intangible assets. Amortization expense for the three months ended January 31, 2018 and 2017 was $5,268,000 and $6,032,000 , respectively. Amortization expense for the six months ended January 31, 2018 and 2017 was $10,537,000 and $12,087,000 , respectively. The estimated amortization expense consists of the following for the fiscal years ending July 31,: 2018 $ 21,075,000 2019 17,155,000 2020 17,155,000 2021 16,196,000 2022 14,955,000 We review net intangible assets with finite lives for impairment when an event occurs indicating the potential for impairment. No such event has occurred during the six months ended January 31, 2018 . We believe that the carrying values of our net intangible assets were recoverable as of January 31, 2018 . Any impairment charges that we may record in the future could be material to our results of operation and financial condition.

Stockholders' Equity

Stockholders' Equity	6 Months Ended
	Jan. 31, 2018
Stockholders' Equity Note [Abstract]
Stockholders' Equity	Stockholders’ Equity Sale of Common Stock In June 2016, the Company sold 7,145,000 shares of its common stock in a public offering at a price to the public of $14.00 per share, resulting in proceeds to the Company of $95,029,000 , net of underwriting discounts and commissions. As of January 31, 2018 and March 7, 2018 , an aggregate registered amount of $74,970,000 under the Company's existing Shelf Registration Statement filed with the SEC remains available for sale of various types of securities, including debt. Stock Repurchase Program As of January 31, 2018 and March 7, 2018 , we were authorized to repurchase up to an additional $8,664,000 of our common stock, pursuant to our current $100,000,000 stock repurchase program. Our stock repurchase program has no time restrictions and repurchases may be made in open-market or privately negotiated transactions and may be made pursuant to SEC Rule 10b5-1 trading plans. There were no repurchases made during the six months ended January 31, 2018 or 2017 . Dividends Since September 2010, we have paid quarterly dividends pursuant to an annual targeted dividend amount that was established by our Board of Directors. On September 27, 2017 and December 6, 2017, our Board of Directors declared a dividend of $0.10 per common share, which was paid on November 17, 2017 and February 16, 2018, respectively. On March 7, 2018 , our Board of Directors declared a dividend of $0.10 per common share, payable on May 18, 2018 to stockholders of record at the close of business on April 18, 2018 . Future dividends remain subject to compliance with financial covenants under our Secured Credit Facility, as amended, as well as Board approval.

Legal Proceedings and Other Mat

Legal Proceedings and Other Matters	6 Months Ended
	Jan. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Legal Proceedings and Other Matters	Legal Proceedings and Other Matters Legacy TCS Intellectual Property Matter - Vehicle IP In December 2009, Vehicle IP, LLC ("Vehicle IP") filed a patent infringement lawsuit in the U.S. District Court for the District of Delaware (the "District Court"), seeking monetary damages, fees and expenses and other relief from, among others, our customer Verizon Wireless ("Verizon"), based on the VZ Navigator product, and TCS is defending Verizon against Vehicle IP. In 2013, the District Court granted the defendants’ motion for summary judgment on the basis that the products in question did not infringe plaintiff’s patent. Plaintiff appealed that decision and, in 2014, the U.S. Court of Appeals for the Federal Circuit reversed the District Court's claim construction, overturned the District Court's grant of summary judgment of noninfringement, and remanded the case for further proceedings. Fact discovery and expert discovery has closed. Substantive settlement conversations have occurred but, to date, the parties have been unable to reach a settlement. As discussed in Note (7) -"Accrued Expenses and Other Current Liabilities," we have accrued certain legal and settlement costs related to the Vehicle IP matter. The accrued settlement costs related to this matter do not reflect the final amounts we actually may pay, if any. On May 30, 2017, we received positive news that the District Court issued a supplemental claim construction order in our favor. As a result, the plaintiff agreed to file a joint status report to the District Court that requested that the District Court cancel the trial date (which was scheduled for July 2017). On July 28, 2017, the parties entered into a stipulation that the defendants’ accused products do not infringe Vehicle IP’s patent under the District Court’s current revised construction of the disputed patent claim term and requested that the District Court therefore enter a judgment of noninfringement. On August 18, 2017, the court entered such a judgment of noninfringment. As expected, following the judgment, Vehicle IP filed a notice of appeal on August 29, 2017. Vehicle IP's opening brief on appeal of the District Court's claim construction was submitted in October 2017. TCS’s brief in response was filed on January 19, 2018. An appellate ruling may take a year or so to be issued. If the District Court's current claim construction is ultimately upheld at the appellate level, it is possible that we may not have to go to trial or pay any monetary damages. Ongoing legal expenses associated with defending this matter and its ultimate resolution could vary and have a material adverse effect on our consolidated results of operations, financial position or cash flows in future periods. Other Matters In October 2014, we disclosed to the U.S. Department of the Treasury, Office of Foreign Assets Control ("OFAC") that we learned during a self-assessment of our export transactions that a shipment of modems sent to a Canadian customer by Comtech EF Data Corp. was incorporated into a communication system, the ultimate end user of which was the Sudan Civil Aviation Authority. The sales value of this equipment was approximately $288,000 . At the time of shipment, OFAC regulations prohibited U.S. persons from doing business directly or indirectly with Sudan. In late 2015, OFAC issued an administrative subpoena seeking further information about the disclosed transaction. We have responded to the subpoena, including alerting OFAC to Comtech’s repair of three modems for a customer in Lebanon who may have rerouted the modems from Lebanon to Sudan without the required U.S. licensing authorization. Subsequently, in October 2017, U.S. sanctions with respect to Sudan were revoked. Consistent with the revocation of the Sudan Sanction Regulations ("SSR"), shipments to the Sudan Civil Aviation Authority by U.S. persons are now permissible. We are not able to predict when OFAC will complete its review, nor whether it will take any enforcement action against us in light of the recent revocation of the SSR. If OFAC determines that we have violated U.S. trade sanctions, civil and criminal penalties could apply, and we may suffer reputational harm. Even though we take precautions to avoid engaging in transactions that may violate U.S. trade sanctions, those measures may not be effective in every instance. There are certain other pending and threatened legal actions which arise in the normal course of business. Although the ultimate outcome of litigation is difficult to accurately predict, we believe that the outcome of these other pending and threatened actions will not have a material adverse effect on our consolidated financial condition or results of operations.

Adoption of Accounting Standa25

Adoption of Accounting Standards and Updates Adoption of Accounting Standards and Updates (Policies)	6 Months Ended
	Jan. 31, 2018
Accounting Policies [Abstract]
Adoption of Accounting Standards and Updates	Adoption of Accounting Standards and Updates We are required to prepare our condensed consolidated financial statements in accordance with the Financial Accounting Standard Board ("FASB") Accounting Standards Codification ("ASC") which is the source for all authoritative U.S. generally accepted accounting principles, which are commonly referred to as "GAAP." The FASB ASC is subject to updates by the FASB, which are known as Accounting Standards Updates ("ASUs"). During the six months ended January 31, 2018 , we adopted FASB ASU 2016-09 "Compensation - Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting" ("ASU 2016-09"), which amends several aspects of the accounting for and reporting of share-based payment transactions. Our adoption of this ASU, on August 1, 2017, did not have a material impact on our condensed consolidated financial statements. See Note (12) - "Stock-Based Compensation" for further information regarding our adoption of this ASU.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jan. 31, 2018
Earnings Per Share [Abstract]
Schedule of numerators and denominators used in basic and diluted EPS calculations	The following table reconciles the numerators and denominators used in the basic and diluted EPS calculations: Three months ended January 31, Six months ended January 31, 2018 2017 2018 2017 Numerator: Net income for basic calculation $ 15,761,000 6,585,000 14,101,000 4,096,000 Numerator for diluted calculation $ 15,761,000 6,585,000 14,101,000 4,096,000 Denominator: Denominator for basic calculation 23,816,000 23,428,000 23,805,000 23,406,000 Effect of dilutive securities: Stock-based awards 137,000 17,000 137,000 21,000 Denominator for diluted calculation 23,953,000 23,445,000 23,942,000 23,427,000

Accounts Receivable (Tables)

Accounts Receivable (Tables)	6 Months Ended
	Jan. 31, 2018
Accounts Receivable Additional Disclosures [Abstract]
Accounts receivable	Accounts receivable consist of the following at: January 31, 2018 July 31, 2017 Billed receivables from commercial and international customers $ 68,478,000 71,404,000 Unbilled receivables from commercial and international customers 14,726,000 24,668,000 Billed receivables from the U.S. government and its agencies 21,235,000 18,497,000 Unbilled receivables from the U.S. government and its agencies 15,410,000 11,693,000 Total accounts receivable 119,849,000 126,262,000 Less allowance for doubtful accounts 1,876,000 1,300,000 Accounts receivable, net $ 117,973,000 124,962,000

Inventories (Tables)

Inventories (Tables)	6 Months Ended
	Jan. 31, 2018
Inventory Disclosure [Abstract]
Inventories	Inventories consist of the following at: January 31, 2018 July 31, 2017 Raw materials and components $ 52,592,000 50,569,000 Work-in-process and finished goods 35,162,000 26,053,000 Total inventories 87,754,000 76,622,000 Less reserve for excess and obsolete inventories 16,047,000 16,019,000 Inventories, net $ 71,707,000 60,603,000

Accrued Expenses and Other Cu29

Accrued Expenses and Other Current Liabilities (Tables)	6 Months Ended
	Jan. 31, 2018
Accrued Liabilities, Current [Abstract]
Accrued expenses and other current liabilities	Accrued expenses and other current liabilities consist of the following at: January 31, 2018 July 31, 2017 Accrued wages and benefits $ 20,911,000 19,622,000 Accrued warranty obligations 12,481,000 17,617,000 Accrued legal costs 7,747,000 8,402,000 Accrued contract costs 6,439,000 8,644,000 Accrued commissions and royalties 2,328,000 3,600,000 Other 10,679,000 10,725,000 Accrued expenses and other current liabilities $ 60,585,000 68,610,000
Schedule of changes in current accrued warranty obligations	Changes in our current accrued warranty obligations during the six months ended January 31, 2018 and 2017 were as follows: Six months ended January 31, 2018 2017 Balance at beginning of period $ 17,617,000 15,362,000 Provision for warranty obligations 2,278,000 3,234,000 Charges incurred (3,914,000 ) (3,782,000 ) Warranty settlement and reclass (see below) (3,500,000 ) — Adjustments to TCS pre-acquisition contingent liability — 4,200,000 Balance at end of period $ 12,481,000 19,014,000

Acquisition-Related Restructu30

Acquisition-Related Restructuring Plan (Tables)	6 Months Ended
	Jan. 31, 2018
Restructuring and Related Activities [Abstract]
Determination of estimated facility exit costs table	The remaining estimated amounts relate to facility exit costs and were determined as follows: At August 1, 2008 Total non-cancelable lease obligations $ 12,741,000 Less: Estimated sublease income 8,600,000 Total net estimated facility exit costs 4,141,000 Less: Interest expense to be accreted 2,041,000 Present value of estimated facility exit costs $ 2,100,000
Summary of acquisition-related restructuring liabilities	As of January 31, 2018 , the amount of the acquisition-related restructuring reserve is as follows: Cumulative Present value of estimated facility exit costs at August 1, 2008 $ 2,100,000 Cash payments made (11,393,000 ) Cash payments received 8,600,000 Accreted interest recorded 1,886,000 Liability recorded as of period end as accrued expenses and other current liabilities in the Condensed Consolidated Balance Sheet $ 1,193,000
Summary of future cash payments associated with estimated facility exit costs	Future cash payments associated with our restructuring plan are summarized below: As of January 31, 2018 Future lease payments to be made $ 1,193,000 Interest expense to be accreted in future periods 154,000 Total remaining payments $ 1,347,000

Secured Credit Facility (Tables

Secured Credit Facility (Tables)	6 Months Ended
	Jan. 31, 2018
Line of Credit Facility [Abstract]
Schedule of Line of Credit Facilities	As of January 31, 2018 and July 31, 2017 , amounts outstanding under our Secured Credit Facility, net, were as follows: January 31, 2018 July 31, 2017 Term Loan Facility $ 128,726,000 139,080,000 Less unamortized deferred financing costs related to Term Loan Facility 4,094,000 4,763,000 Term Loan Facility, net 124,632,000 134,317,000 Revolving Loan Facility 66,804,000 57,405,000 Amount outstanding under Secured Credit Facility, net 191,436,000 191,722,000 Less current portion of long-term debt 17,211,000 15,494,000 Non-current portion of long-term debt $ 174,225,000 176,228,000

Capital Lease Obligations (Tabl

Capital Lease Obligations (Tables)	6 Months Ended
	Jan. 31, 2018
Capital Leases [Abstract]
Schedule of Future Minimum Lease Payments for Capital Leases	Future minimum payments under capital lease obligations consisted of the following at January 31, 2018 : Remainder of fiscal 2018 $ 1,061,000 Fiscal 2019 1,492,000 Fiscal 2020 318,000 Fiscal 2021 and beyond — Total minimum lease payments 2,871,000 Less: amounts representing interest 128,000 Present value of net minimum lease payments 2,743,000 Current portion of capital lease obligations 1,858,000 Non-current portion of capital lease obligations $ 885,000

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	6 Months Ended
	Jan. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Stock-based Awards Outstanding by Award Type	As of January 31, 2018 , the following stock-based awards, by award type, were outstanding: Stock options 1,805,485 Performance shares 277,881 RSUs and restricted stock 425,226 Share units 267,606 Total 2,776,198
Stock-based compensation for awards detailing where recorded in Condensed Consolidated Statement of Operations	Stock-based compensation for awards issued is reflected in the following line items in our Condensed Consolidated Statements of Operations: Three months ended January 31, Six months ended January 31, 2018 2017 2018 2017 Cost of sales $ 51,000 58,000 91,000 106,000 Selling, general and administrative expenses 954,000 878,000 1,608,000 1,729,000 Research and development expenses 75,000 83,000 128,000 154,000 Stock-based compensation expense before income tax benefit 1,080,000 1,019,000 1,827,000 1,989,000 Estimated income tax benefit (234,000 ) (361,000 ) (494,000 ) (702,000 ) Net stock-based compensation expense $ 846,000 658,000 1,333,000 1,287,000
Summary of net stock-based compensation expense by award type	Stock-based compensation expense (benefit), by award type, is summarized as follows: Three months ended January 31, Six months ended January 31, 2018 2017 2018 2017 Stock options $ 268,000 386,000 536,000 632,000 Performance shares 371,000 372,000 483,000 866,000 RSUs and restricted stock 390,000 224,000 774,000 412,000 ESPP 51,000 37,000 96,000 79,000 Share units — — (62,000 ) — Stock-based compensation expense before income tax benefit 1,080,000 1,019,000 1,827,000 1,989,000 Estimated income tax benefit (234,000 ) (361,000 ) (494,000 ) (702,000 ) Net stock-based compensation expense $ 846,000 658,000 1,333,000 1,287,000
Summary of the Plan's activity relating to stock options	The following table summarizes the Plan's activity during the six months ended January 31, 2018 : Awards (in Shares) Weighted Average Exercise Price Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at July 31, 2017 1,855,875 $ 28.60 Expired/canceled (41,040 ) 28.97 Outstanding at October 31, 2017 1,814,835 28.59 Expired/canceled (9,350 ) 29.02 Outstanding at January 31, 2018 1,805,485 $ 28.59 5.06 $ 11,000 Exercisable at January 31, 2018 1,366,876 $ 28.61 4.55 $ 4,000 Vested and expected to vest at January 31, 2018 1,755,904 $ 28.58 5.01 $ 10,000
Summary of the Plan's activity relating to performance shares, RSUs, restricted stock and share units	The following table summarizes the Plan's activity relating to performance shares, RSUs, restricted stock and share units: Awards (in Shares) Weighted Average Grant Date Fair Value Aggregate Intrinsic Value Outstanding at July 31, 2017 830,197 $ 16.95 Granted 307,194 18.25 Settled (100,321 ) 20.67 Forfeited (61,520 ) 18.88 Outstanding at October 31, 2017 975,550 16.86 Settled (526 ) 11.40 Forfeited (4,311 ) 15.26 Outstanding at January 31, 2018 970,713 $ 16.86 $ 20,997,000 Vested at January 31, 2018 309,853 $ 17.55 $ 6,702,000 Vested and expected to vest at January 31, 2018 932,413 $ 16.88 $ 20,168,000

Customer and Geographic Infor34

Customer and Geographic Information (Tables)	6 Months Ended
	Jan. 31, 2018
Geographic Areas, Revenues from External Customers [Abstract]
Schedule of net sales, as a percentage, by geography and customer type	Sales by geography and customer type, as a percentage of consolidated net sales, are as follows: Three months ended January 31, Six months ended January 31, 2018 2017 2018 2017 U.S. government 31.5 % 32.1 % 32.0 % 33.7 % Domestic 42.0 % 35.8 % 43.1 % 36.3 % Total United States 73.5 % 67.9 % 75.1 % 70.0 % International 26.5 % 32.1 % 24.9 % 30.0 % Total 100.0 % 100.0 % 100.0 % 100.0 %

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jan. 31, 2018
Segment Reporting [Abstract]
Segment information	Operating segment information, along with a reconciliation of segment net income (loss) and consolidated net income to Adjusted EBITDA is presented in the tables below: Three months ended January 31, 2018 Commercial Solutions Government Solutions Unallocated Total Net sales $ 85,824,000 47,907,000 — $ 133,731,000 Operating income (loss) $ 8,922,000 (299,000 ) (3,740,000 ) $ 4,883,000 Net income (loss) $ 8,958,000 (313,000 ) 7,116,000 $ 15,761,000 Benefit from income taxes (7,000 ) — (13,342,000 ) (13,349,000 ) Interest (income) and other expense (58,000 ) 14,000 (4,000 ) (48,000 ) Interest expense 29,000 — 2,490,000 2,519,000 Amortization of stock-based compensation — — 1,080,000 1,080,000 Amortization of intangibles 4,424,000 844,000 — 5,268,000 Depreciation 2,457,000 588,000 272,000 3,317,000 Adjusted EBITDA $ 15,803,000 1,133,000 (2,388,000 ) $ 14,548,000 Purchases of property, plant and equipment $ 1,418,000 189,000 121,000 $ 1,728,000 Total assets at January 31, 2018 $ 602,872,000 178,970,000 40,809,000 $ 822,651,000 Three months ended January 31, 2017 Commercial Solutions Government Solutions Unallocated Total Net sales $ 82,103,000 56,925,000 — $ 139,028,000 Operating income $ 5,864,000 2,338,000 4,647,000 $ 12,849,000 Net income (loss) $ 5,730,000 2,362,000 (1,507,000 ) $ 6,585,000 Provision for income taxes 135,000 — 3,351,000 3,486,000 Interest (income) and other expense (60,000 ) (23,000 ) 9,000 (74,000 ) Interest expense 59,000 (1,000 ) 2,794,000 2,852,000 Amortization of stock-based compensation — — 1,019,000 1,019,000 Amortization of intangibles 4,413,000 1,619,000 — 6,032,000 Depreciation 2,429,000 752,000 387,000 3,568,000 Settlement of intellectual property litigation — — (9,979,000 ) (9,979,000 ) Adjusted EBITDA $ 12,706,000 4,709,000 (3,926,000 ) $ 13,489,000 Purchases of property, plant and equipment $ 1,652,000 413,000 7,000 $ 2,072,000 Total assets at January 31, 2017 $ 620,147,000 197,035,000 66,326,000 $ 883,508,000 Six months ended January 31, 2018 Commercial Solutions Government Solutions Unallocated Total Net sales $ 161,938,000 93,362,000 — $ 255,300,000 Operating income (loss) $ 13,714,000 (940,000 ) (7,669,000 ) $ 5,105,000 Net income (loss) $ 13,660,000 (955,000 ) 1,396,000 $ 14,101,000 Benefit from income taxes (1,000 ) — (14,093,000 ) (14,094,000 ) Interest (income) and other expense (10,000 ) 12,000 (11,000 ) (9,000 ) Interest expense 65,000 3,000 5,039,000 5,107,000 Amortization of stock-based compensation — — 1,827,000 1,827,000 Amortization of intangibles 8,849,000 1,688,000 — 10,537,000 Depreciation 4,900,000 1,204,000 559,000 6,663,000 Adjusted EBITDA $ 27,463,000 1,952,000 (5,283,000 ) $ 24,132,000 Purchases of property, plant and equipment $ 2,377,000 282,000 177,000 $ 2,836,000 Total assets at January 31, 2018 $ 602,872,000 178,970,000 40,809,000 $ 822,651,000 Six months ended January 31, 2017 Commercial Solutions Government Solutions Unallocated Total Net sales $ 158,281,000 116,533,000 — $ 274,814,000 Operating income (loss) $ 8,962,000 4,838,000 (1,679,000 ) $ 12,121,000 Net income (loss) $ 8,743,000 4,865,000 (9,512,000 ) $ 4,096,000 Provision for income taxes 158,000 — 1,766,000 1,924,000 Interest (income) and other expense (62,000 ) (26,000 ) 12,000 (76,000 ) Interest expense 123,000 (1,000 ) 6,055,000 6,177,000 Amortization of stock-based compensation — — 1,989,000 1,989,000 Amortization of intangibles 8,849,000 3,238,000 — 12,087,000 Depreciation 5,016,000 1,503,000 798,000 7,317,000 Settlement of intellectual property litigation — — (9,979,000 ) (9,979,000 ) Adjusted EBITDA $ 22,827,000 9,579,000 (8,871,000 ) $ 23,535,000 Purchases of property, plant and equipment $ 3,647,000 423,000 77,000 $ 4,147,000 Total assets at January 31, 2017 $ 620,147,000 197,035,000 66,326,000 $ 883,508,000

Goodwill (Tables)

Goodwill (Tables)	6 Months Ended
	Jan. 31, 2018
Goodwill [Abstract]
Schedule of goodwill by segment	The following table represents goodwill by reportable operating segment as of January 31, 2018 and July 31, 2017 : Commercial Solutions Government Solutions Total Goodwill $ 231,440,000 $ 59,193,000 $ 290,633,000

Intangible Assets (Tables)

Intangible Assets (Tables)	6 Months Ended
	Jan. 31, 2018
Finite-Lived Intangible Assets, Net [Abstract]
Intangible assets with finite lives	Intangible assets with finite lives are as follows: As of January 31, 2018 Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer relationships 20.3 $ 249,831,000 48,636,000 $ 201,195,000 Technologies 12.3 82,370,000 51,504,000 30,866,000 Trademarks and other 16.4 28,894,000 9,621,000 19,273,000 Total $ 361,095,000 109,761,000 $ 251,334,000 As of July 31, 2017 Weighted Average Amortization Period Gross Carrying Amount Accumulated Amortization Net Carrying Amount Customer relationships 20.3 $ 249,831,000 41,923,000 $ 207,908,000 Technologies 12.3 82,370,000 48,623,000 33,747,000 Trademarks and other 16.4 28,894,000 8,678,000 20,216,000 Total $ 361,095,000 99,224,000 $ 261,871,000
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	The estimated amortization expense consists of the following for the fiscal years ending July 31,: 2018 $ 21,075,000 2019 17,155,000 2020 17,155,000 2021 16,196,000 2022 14,955,000

General Narrative (Details)

General Narrative (Details) - operating_segment	3 Months Ended	6 Months Ended
	Jan. 31, 2018	Jan. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments	2	2

Fair Value Measurements and F39

Fair Value Measurements and Financial Instruments (Details)	Jan. 31, 2018
Fair Value Disclosures [Abstract]
Non-current portion of capital lease obligations, a blended interest rate (percent)	5.90%

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2018	Jan. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average performance shares outstanding during the period that are excluded from EPS Calculation (in shares)	259,000	237,000	211,000	229,000
Net income for basic calculation	$ 15,761,000	$ 6,585,000	$ 14,101,000	$ 4,096,000
Numerator for diluted calculation	$ 15,761,000	$ 6,585,000	$ 14,101,000	$ 4,096,000
Denominator for basic calculation (in shares)	23,816,000	23,428,000	23,805,000	23,406,000
Effect of dilutive securities: Stock-based awards (in shares)	137,000	17,000	137,000	21,000
Denominator for diluted calculation (in shares)	23,953,000	23,445,000	23,942,000	23,427,000
Stock options, performance shares (with the performance conditions satisfied), RSUs and restricted stock
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive equity-classified stock-based awards not included in calculation of diluted earnings per share (in shares)	1,812,000	2,173,000	1,821,000	2,305,000

Accounts Receivable (Details)

Accounts Receivable (Details)	Jan. 31, 2018USD ($)customer	Jul. 31, 2017USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	$ 119,849,000	$ 126,262,000
Less allowance for doubtful accounts	1,876,000	1,300,000
Accounts receivable, net	$ 117,973,000	$ 124,962,000
Accounts Receivable | Major customer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of customers accounted for greater than 10% of total accounts receivable other than disclosed | customer	0
Minimum percentage of total accounts receivable outstanding by one customer or individual country requiring additional and separate disclosure	10.00%
Accounts Receivable | Major customer | U.S. government and its agencies
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of total accounts receivable	30.60%	23.90%
Accounts Receivable | Major customer | Verizon Communications Inc.
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage of total accounts receivable	12.00%
Billed Receivables | Commercial and International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	$ 68,478,000	$ 71,404,000
Billed Receivables | U.S. government and its agencies
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	21,235,000	18,497,000
Unbilled Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Retainage	$ 125,000	118,000
Maximum period that management estimates unbilled accounts receivable to be billed and collected	1 year
Unbilled Receivables | Commercial and International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	$ 14,726,000	24,668,000
Unbilled Receivables | U.S. government and its agencies
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total accounts receivable	15,410,000	11,693,000
Unbilled Receivables | Major customer | U.S. Prime Contractor
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unbilled receivable related to our large over-the-horizon microwave system contracts	$ 2,012,000	$ 2,995,000

Inventories (Details)

Inventories (Details) - USD ($)	Jan. 31, 2018	Jul. 31, 2017
Inventory Disclosure [Abstract]
Raw materials and components	$ 52,592,000	$ 50,569,000
Work-in-process and finished goods	35,162,000	26,053,000
Total inventories	87,754,000	76,622,000
Less reserve for excess and obsolete inventories	16,047,000	16,019,000
Inventories, net	71,707,000	60,603,000
Inventory directly related to long-term contracts	1,420,000	2,148,000
Inventory related to contracts from third party commercial customers who outsource their manufacturing to us	$ 1,528,000	$ 1,718,000

Accrued Expenses and Other Cu43

Accrued Expenses and Other Current Liabilities (Details) - USD ($)	Jan. 31, 2018	Jul. 31, 2017	Jan. 31, 2017	Jul. 31, 2016
Business Acquisition [Line Items]
Accrued wages and benefits	$ 20,911,000	$ 19,622,000
Accrued warranty obligations	12,481,000	17,617,000	$ 19,014,000	$ 15,362,000
Accrued contract costs	6,439,000	8,644,000
Accrued legal costs	7,747,000	8,402,000
Accrued commissions and royalties	2,328,000	3,600,000
Other	10,679,000	10,725,000
Accrued expenses and other current liabilities	60,585,000	68,610,000
TeleCommunication Systems Inc. | Pre-Acquisition Contingencies Related to TCS Intellectual Property
Business Acquisition [Line Items]
Accrued legal costs	$ 3,623,000	$ 4,120,000

Accrued Expenses and Other Cu44

Accrued Expenses and Other Current Liabilities - Product Warranty Rollforward (Details)	6 Months Ended
	Jan. 31, 2018USD ($)credit	Jan. 31, 2017USD ($)	Jan. 31, 2018USD ($)
Business Acquisition [Line Items]
Minimum coverage period of product warranty from the date of shipment	1 year
Accrued warranty obligations	$ 17,617,000	$ 15,362,000	$ 12,481,000
Changes in Product Warranty Liability
Accrued warranty obligations, as of the beginning of the period	17,617,000	15,362,000
Provision for warranty obligations	2,278,000	3,234,000
Charges incurred	(3,914,000)	(3,782,000)
Warranty settlement and reclass (see below)	3,500,000	0
Adjustments to TCS pre-acquisition contingent liability	0	4,200,000
Accrued warranty obligations, as of the end of the period	12,481,000	$ 19,014,000
TeleCommunication Systems Inc. | TCS 911 call handling software solution
Business Acquisition [Line Items]
Accrued warranty obligations	9,909,000		5,234,000
Changes in Product Warranty Liability
Accrued warranty obligations, as of the beginning of the period	9,909,000
Accrued warranty obligations, as of the end of the period	$ 5,234,000
TeleCommunication Systems Inc. | TCS 911 call handling software solution | Full and final warranty settlement with AT&T
Business Acquisition [Line Items]
Number of monthly credits issued | credit	36
Amount of monthly credit			153,000
Present value of monthly credits			4,361,000
TeleCommunication Systems Inc. | TCS 911 call handling software solution | Full and final warranty settlement with AT&T | Accounts Payable and Accrued Liabilities
Business Acquisition [Line Items]
Present value of monthly credits			1,521,000
TeleCommunication Systems Inc. | TCS 911 call handling software solution | Full and final warranty settlement with AT&T | Other Noncurrent Liabilities
Business Acquisition [Line Items]
Present value of monthly credits			$ 2,840,000
TeleCommunication Systems Inc. | TCS 911 call handling software solution | Full and final warranty settlement with AT&T | Cost of sales
Business Acquisition [Line Items]
A benefit in connection with favorable settlement	$ 660,000

Acquisition-Related Restructu45

Acquisition-Related Restructuring Plan - Summary of Radyne Acquisition Related Restructuring Plan (Details) - USD ($)	Jan. 31, 2018	Jul. 31, 2017	Aug. 01, 2008	Jul. 31, 2008
Restructuring and Related Activities [Abstract]
Business acquisition restructuring costs			$ 2,713,000
Business acquisition restructuring costs related to severance for employees			613,000
Total non-cancelable lease obligations			12,741,000
Less: Estimated sublease income			8,600,000
Total net estimated facility exit costs			4,141,000
Less: Interest expense to be accreted			2,041,000
Present value of estimated facility exit costs	$ 1,193,000	$ 1,941,000	$ 2,100,000	$ 2,100,000

Acquisition-Related Restructu46

Acquisition-Related Restructuring Plan - Activity of Facility Related Exit Costs (Details) - USD ($)	3 Months Ended		6 Months Ended		114 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2018
Restructuring Reserve [Roll Forward]
Present value of estimated facility-related exit costs, beginning balance			$ 1,941,000		$ 2,100,000
Cash payments made			(805,000)		(11,393,000)
Cash payments received					8,600,000
Accreted interest recorded	$ 25,000	$ 51,000	57,000	$ 107,000	1,886,000
Liability recorded as of period end as accrued expenses and other current liabilities in the Condensed Consolidated Balance Sheet	$ 1,193,000		$ 1,193,000		$ 1,193,000

Acquisition-Related Restructu47

Acquisition-Related Restructuring Plan - Details of Future Cash Payments (Details) - USD ($)	Jan. 31, 2018	Jul. 31, 2017	Aug. 01, 2008	Jul. 31, 2008
Restructuring and Related Activities [Abstract]
Future lease payments to be made	$ 1,193,000	$ 1,941,000	$ 2,100,000	$ 2,100,000
Interest expense to be accreted in future periods	154,000
Total remaining payments	$ 1,347,000

Secured Credit Facility (Detail

Secured Credit Facility (Details)	Jan. 31, 2018USD ($)$ / shares	Jan. 31, 2018USD ($)	Jan. 31, 2017USD ($)	Jan. 31, 2018USD ($)	Jan. 31, 2017USD ($)	Jul. 31, 2017USD ($)	Feb. 23, 2016USD ($)
Line of Credit Facility [Line Items]
Current portion of long-term debt	$ 17,211,000	$ 17,211,000		$ 17,211,000		$ 15,494,000
Non-current portion of long-term debt, net	174,225,000	174,225,000		174,225,000		176,228,000
Repayment of term loan facility				10,354,000	$ 4,427,000
Secured Credit Facility
Line of Credit Facility [Line Items]
Long-term Debt	191,436,000	191,436,000		191,436,000		191,722,000
Current portion of long-term debt	17,211,000	17,211,000		17,211,000		15,494,000
Non-current portion of long-term debt, net	174,225,000	174,225,000		174,225,000		176,228,000
Secured credit facility, maximum borrowing capacity							$ 400,000,000
Interest expense including amortization of deferred financing costs		$ 2,350,000	$ 2,708,000	$ 4,815,000	$ 5,883,000
Blended interest rate (percent)		5.10%	5.06%	5.20%	4.79%
Outstanding standby letters of credit at period end	2,660,000	$ 2,660,000		$ 2,660,000
Outstanding commercial letters of credit at period end	0	0		0
Maximum amount of available cash on hand that can be used in leverage ratio calculation	$ 50,000,000	50,000,000		50,000,000
Leverage ratio	2.78
Fixed charge coverage ratio	2.09
Targeted quarterly dividend per share | $ / shares	$ 0.10
Term Loan Facility | Secured Credit Facility
Line of Credit Facility [Line Items]
Long-term debt, gross	$ 128,726,000	128,726,000		128,726,000		139,080,000
Unamortized deferred financing costs	4,094,000	4,094,000		4,094,000		4,763,000
Long-term Debt	124,632,000	124,632,000		124,632,000		134,317,000
Secured credit facility, maximum borrowing capacity							250,000,000
Repayment of term loan facility				10,354,000	$ 4,427,000
Revolving Loan Facility | Secured Credit Facility
Line of Credit Facility [Line Items]
Long-term Debt	$ 66,804,000	66,804,000		$ 66,804,000		$ 57,405,000
Secured credit facility, maximum borrowing capacity							150,000,000
Revolving Loan Facility | Letter of Credit
Line of Credit Facility [Line Items]
Secured credit facility, maximum borrowing capacity							$ 25,000,000
Federal Funds Effective Rate | Revolving Loan Facility | Secured Credit Facility
Line of Credit Facility [Line Items]
Variable interest rate (percent)				0.50%
Adjusted LIBO rate | Revolving Loan Facility | Secured Credit Facility
Line of Credit Facility [Line Items]
Variable interest rate (percent)				1.00%
Floor interest rate				1.00%
Minimum | Secured Credit Facility
Line of Credit Facility [Line Items]
Fixed charge coverage ratio	1.25
Minimum | Revolving Loan Facility | Secured Credit Facility
Line of Credit Facility [Line Items]
Long-term Debt	$ 41,904,000	41,904,000		$ 41,904,000
Maximum | Secured Credit Facility
Line of Credit Facility [Line Items]
Leverage ratio	3.35
Maximum | Revolving Loan Facility | Secured Credit Facility
Line of Credit Facility [Line Items]
Long-term Debt	$ 66,804,000	66,804,000		66,804,000
Fourth quarter of fiscal 2018 and thereafter | Maximum | Secured Credit Facility
Line of Credit Facility [Line Items]
Leverage ratio	3
Due by February 23, 2021 | Term Loan Facility | Secured Credit Facility
Line of Credit Facility [Line Items]
Balloon payment to be made	$ 22,500,000	$ 22,500,000		$ 22,500,000

Capital Lease Obligations (Deta

Capital Lease Obligations (Details) - USD ($)	Jan. 31, 2018	Jul. 31, 2017
Capital Leases [Abstract]
Net book value of the leased assets	$ 3,815,000	$ 5,419,000
Blended interest rate	5.90%
Capital Leases, Option To Buy Leased Asset	$ 1
Remainder of fiscal 2018	1,061,000
Fiscal 2,019	1,492,000
Fiscal 2,020	318,000
Fiscal 2021 and beyond	0
Total minimum lease payments	2,871,000
Less: amounts representing interest	128,000
Present value of net minimum lease payments	2,743,000
Current portion of capital lease obligations	1,858,000	2,309,000
Non-current portion of capital lease obligations	$ 885,000	$ 1,771,000

Income Taxes (Details)

Income Taxes (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jan. 31, 2018	Jul. 31, 2018	Jul. 31, 2017
Income Tax Contingency [Line Items]
Estimated net discrete tax benefit resulting from Tax Reform	$ 14,018,000
Unrecognized tax benefits	9,043,000		$ 8,681,000
Interest accrued relating to income taxes	147,000		95,000
Unrecognized tax benefits that would positively impact our effective tax rate, if recognized	8,351,000		7,727,000
Non-current income taxes payable
Income Tax Contingency [Line Items]
Unrecognized tax benefits	2,558,000		2,515,000
Included in the non-current deferred tax liabilities (as an offset to the associated deferred tax asset)
Income Tax Contingency [Line Items]
Unrecognized tax benefits	$ 6,485,000		$ 6,166,000
Scenario, Forecast
Income Tax Contingency [Line Items]
Federal income tax rate		27.00%
Effective tax rate		27.75%
Effective tax rate, prior estimate		34.50%

Stock-Based Compensation - Over

Stock-Based Compensation - Overview (Details) - shares	6 Months Ended
	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017
Stock options
Stock-Based Awards Outstanding By Award Type
Number of stock-based option awards outstanding at period end (in shares)	1,805,485	1,814,835	1,855,875
2000 Stock Incentive Plan
2000 Stock Incentive Plan
Aggregate maximum number of shares of common stock which may be issued under stock option plan (in shares)	10,362,500
Aggregate net number of stock-based awards granted (in shares)	8,086,920
Aggregate number of stock based awards expired and canceled (in shares)	3,840,518
Aggregate number of stock-based awards exercised or settled (in shares)	5,310,722
Stock-Based Awards Outstanding By Award Type
Number of total stock-based awards outstanding (in shares)	2,776,198
2000 Stock Incentive Plan | Stock options
2000 Stock Incentive Plan
Maximum term for grants of incentive and non-qualified stock-based awards, excluding incentive stock-based awards granted to stockholders who own more than 10% of the voting power	10 years
Percentage of a stockholder's voting power that limits the contractual term of an incentive stock-based award	10.00%
Maximum term for incentive stock-based awards granted to stockholders who own more than 10% of the voting power	5 years
Stock-Based Awards Outstanding By Award Type
Number of stock-based option awards outstanding at period end (in shares)	1,805,485
2000 Stock Incentive Plan | Performance shares
Stock-Based Awards Outstanding By Award Type
Number of stock-based non-option awards outstanding at period end (in shares)	277,881
2000 Stock Incentive Plan | RSUs and restricted stock
Stock-Based Awards Outstanding By Award Type
Number of stock-based non-option awards outstanding at period end (in shares)	425,226
2000 Stock Incentive Plan | Share units
Stock-Based Awards Outstanding By Award Type
Number of stock-based non-option awards outstanding at period end (in shares)	267,606
2001 Employee Stock Purchase Plan | Employee Stock Purchase Plan - ESPP
2000 Stock Incentive Plan
Aggregate maximum number of shares of common stock which may be issued under stock option plan (in shares)	800,000
2001 Employee Stock Purchase Plan
Discount rate from market value, on purchase date, offered to employees participating in the Employee Stock Purchase Plan (ESPP)	85.00%
Total number of shares of common stock issued to employees under employee stock purchase plan and through the end of the reporting period (in shares)	722,961

Stock-Based Compensation - Expe

Stock-Based Compensation - Expenses (Details) - USD ($)	Oct. 31, 2017	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2018	Jan. 31, 2017	Jul. 31, 2017
Stock-based Compensation Expenses
Stock-based compensation expense before income tax benefit		$ 1,080,000	$ 1,019,000	$ 1,827,000	$ 1,989,000
Estimated income tax benefit		(234,000)	(361,000)	(494,000)	(702,000)
Net stock-based compensation expense		846,000	658,000	1,333,000	1,287,000
Total remaining unrecognized compensation cost related to the unvested stock-based awards		9,015,000		9,015,000
Estimated forfeitures related to unvested stock-based awards		902,000		902,000
Weighted average number of years net compensation cost is expected to be recognized over	2 years 11 months 26 days
Stock-based compensation capitalized and included in ending inventory		12,000		12,000		$ 12,000
Stock Options
Stock-based Compensation Expenses
Stock-based compensation expense before income tax benefit		$ 268,000	386,000	$ 536,000	632,000
Number of stock-based option awards outstanding at period end (in shares)	1,814,835	1,805,485		1,805,485		1,855,875
Performance Shares
Stock-based Compensation Expenses
Stock-based compensation expense before income tax benefit		$ 371,000	372,000	$ 483,000	866,000
RSUs and restricted stock
Stock-based Compensation Expenses
Stock-based compensation expense before income tax benefit		390,000	224,000	774,000	412,000
Employee Stock Purchase Plan - ESPP
Stock-based Compensation Expenses
Stock-based compensation expense before income tax benefit		51,000	37,000	96,000	79,000
Share units
Stock-based Compensation Expenses
Stock-based compensation expense before income tax benefit		$ 0	0	$ (62,000)	0
Stock Appreciation Rights (SARs)
Stock-based Compensation Expenses
Number of stock-based option awards outstanding at period end (in shares)		0		0		0
Cost of sales
Stock-based Compensation Expenses
Stock-based compensation expense before income tax benefit		$ 51,000	58,000	$ 91,000	106,000
Selling, general and administrative expenses
Stock-based Compensation Expenses
Stock-based compensation expense before income tax benefit		954,000	878,000	1,608,000	1,729,000
Research and development expenses
Stock-based Compensation Expenses
Stock-based compensation expense before income tax benefit		$ 75,000	$ 83,000	$ 128,000	$ 154,000
2001 Employee Stock Purchase Plan | Employee Stock Purchase Plan - ESPP
Stock-based Compensation Expenses
Discount offered to employees participating in the ESPP as a percentage of market price				15.00%	15.00%

Stock-Based Compensation - Stoc

Stock-Based Compensation - Stock Options (Details) - Stock Options - USD ($)	Jan. 31, 2018	Jan. 31, 2018	Oct. 31, 2017	Jan. 31, 2018	Jan. 31, 2017
Awards (in Shares)
Outstanding, Beginning Balance (in shares)		1,814,835	1,855,875	1,855,875
Expired/canceled (in shares)		(9,350)	(41,040)
Outstanding, Ending Balance (in shares)	1,805,485	1,805,485	1,814,835	1,805,485
Exercisable, Ending Balance (in shares)	1,366,876	1,366,876		1,366,876
Vested and Expected to Vest, Ending Balance (in shares)	1,755,904	1,755,904		1,755,904
Weighted Average Exercise Price
Outstanding, Beginning Balance (in dollars per share)		$ 28.59	$ 28.60	$ 28.60
Expired/canceled (in dollars per share)		29.02	28.97
Outstanding, Ending Balance (in dollars per share)	$ 28.59	28.59	$ 28.59	28.59
Exercisable, Ending Balance (in dollars per share)	28.61	28.61		28.61
Vested and Expected to Vest, Ending Balance (in dollars per share)	$ 28.58	$ 28.58		$ 28.58
Weighted Average Remaining Contractual Term (Years)
Outstanding, Ending Balance				5 years 21 days
Exercisable, Ending Balance				4 years 6 months 19 days
Vested And Expected To Vest, Ending Balance				5 years 3 days
Aggregate Intrinsic Value
Outstanding, Ending Balance	$ 11,000	$ 11,000		$ 11,000
Exercisable, Ending Balance	4,000	4,000		4,000
Vested and Expected to Vest, Ending Balance	$ 10,000	$ 10,000		$ 10,000
Additional Disclosures
Exercise price, lower range limit (in dollars per share)	$ 20.90
Exercise price, upper range limit (in dollars per share)	$ 33.94
Granted (in shares)				0	0
Exercised (in shares)				0	0
Vested stock based awards net settled upon exercise (in shares)				0	0
Minimum
Additional Disclosures
Contractual term (in years)	5 years
Vesting period (in years)	3 years
Maximum
Additional Disclosures
Contractual term (in years)	10 years
Vesting period (in years)	5 years

Stock-Based Compensation - Perf

Stock-Based Compensation - Performance Shares, RSUs, Restricted Stock and Share Unit Awards (Details)	Jan. 31, 2018USD ($)$ / sharesshares	Jan. 31, 2018USD ($)$ / sharesshares	Oct. 31, 2017$ / sharesshares	Jan. 31, 2017USD ($)	Jan. 31, 2018USD ($)$ / sharesshares	Jan. 31, 2017USD ($)	Jul. 31, 2017USD ($)
Additional Disclosures
Accrual of dividend equivalents, net of reversal | $					$ 155,000	$ 179,000
Carrying value at period end | $	$ 332,030,000	$ 332,030,000			$ 332,030,000		$ 351,913,000
Performance Shares, RSUs, Restricted Stock and Share Units
Awards (in Shares)
Outstanding, Beginning Balance (in shares)		975,550	830,197		830,197
Granted (in shares)			307,194
Settled (in shares)		(526)	(100,321)
Forfeited (in shares)		(4,311)	(61,520)
Outstanding, Ending Balance (in shares)	970,713	970,713	975,550		970,713
Vested, Ending Balance (in shares)	309,853	309,853			309,853
Vested and Expected to Vest, Ending Balance (in shares)	932,413	932,413			932,413
Weighted Average Grant Date Fair Value
Outstanding, Beginning Balance (in dollars per share) | $ / shares		$ 16.86	$ 16.95		$ 16.95
Granted (in dollars per share) | $ / shares			18.25
Settled (in dollars per share) | $ / shares		11.40	20.67
Forfeited (in dollars per share) | $ / shares		15.26	18.88
Outstanding, Ending Balance (in dollars per share) | $ / shares	$ 16.86	16.86	$ 16.86		16.86
Vested, Ending Balance (in dollars per share) | $ / shares	17.55	17.55			17.55
Vested and Expected to Vest, Ending Balance (in dollars per share) | $ / shares	$ 16.88	$ 16.88			$ 16.88
Aggregate Intrinsic Value
Outstanding, Ending Balance | $	$ 20,997,000	$ 20,997,000			$ 20,997,000
Vested, Ending Balance | $	6,702,000
Vested and Expected to Vest, Ending Balance | $	$ 20,168,000	20,168,000			20,168,000
Additional Disclosures
Total intrinsic value of stock-based awards settled | $		$ 11,000		$ 208,000	$ 1,948,000	$ 633,000
Performance Shares | Employees
Additional Disclosures
Common Stock conversion ratio	1	1			1
Performance Shares | Employees | Granted prior to fiscal 2014
Additional Disclosures
Vesting period (in years)					5 years 3 months 18 days
Performance Shares | Employees | Granted since fiscal 2014
Additional Disclosures
Performance period (in years)					3 years
RSUs and restricted stock | Non-Employee Director
Additional Disclosures
Vesting period (in years)					3 years
Common Stock conversion ratio	1	1			1
RSUs and restricted stock | Employees
Additional Disclosures
Vesting period (in years)					5 years
Common Stock conversion ratio	1	1			1
Share units
Additional Disclosures
Common Stock conversion ratio	1	1			1
Cumulative number of units settled as of the date (in shares)	14,777	14,777			14,777
Share units | Granted on or after July 31, 2017
Additional Disclosures
Conversion period of fully-vested share units into Common Stock from grant date (in years)					1 year
Dividend Equivalents
Additional Disclosures
Accrual of dividend equivalents, net of reversal | $					$ 155,000
Dividend equivalents paid | $					128,000
Carrying value at period end | $	$ 581,000	$ 581,000			$ 581,000		$ 554,000
2000 Stock Incentive Plan | Performance Shares
Awards (in Shares)
Outstanding, Ending Balance (in shares)	277,881	277,881			277,881
2000 Stock Incentive Plan | RSUs and restricted stock
Awards (in Shares)
Outstanding, Ending Balance (in shares)	425,226	425,226			425,226
2000 Stock Incentive Plan | Share units
Awards (in Shares)
Outstanding, Ending Balance (in shares)	267,606	267,606			267,606

Stock-Based Compensation - Inco

Stock-Based Compensation - Income Tax Benefit From Stock-based Awards (Details) - USD ($)	6 Months Ended
	Jan. 31, 2018	Jan. 31, 2017
Income Tax Expense | Impact of Accounting Standards Update 2016-09
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net income tax shortfalls and reversal of deferred tax assets	$ 71,000
Reduction to Additional Paid-In Capital
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Net income tax shortfalls and reversal of deferred tax assets		$ 601,000

Customer and Geographic Infor56

Customer and Geographic Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2018	Jan. 31, 2017
Revenues from External Customers
Entity wide revenue percentage by major customer type	100.00%	100.00%	100.00%	100.00%
Major customer
Revenues from External Customers
Minimum percentage of consolidated net sales sold to one customer or individual country requiring additional and separate disclosure	10.00%	10.00%	10.00%	10.00%
U.S. government
Revenues from External Customers
Entity wide revenue percentage by major customer type	31.50%	32.10%	32.00%	33.70%
Commercial (United States)
Revenues from External Customers
Entity wide revenue percentage by major customer type	42.00%	35.80%	43.10%	36.30%
Total United States
Revenues from External Customers
Entity wide revenue percentage by major customer type	73.50%	67.90%	75.10%	70.00%
International
Revenues from External Customers
Entity wide revenue percentage by major customer type	26.50%	32.10%	24.90%	30.00%
Revenue generated from external customers	$ 35,400,000	$ 44,623,000	$ 63,714,000	$ 82,457,000
Verizon Communications Inc. | Major customer | Sales Revenue, Net
Revenues from External Customers
Percentage of revenue generated from external customer type	10.50%		11.10%

Segment Information (Details)

Segment Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2018	Jan. 31, 2017	Jul. 31, 2017
Segment Reporting Information [Line Items]
Net sales	$ 133,731,000	$ 139,028,000	$ 255,300,000	$ 274,814,000
Operating income (loss)	4,883,000	12,849,000	5,105,000	12,121,000
Net income (loss)	15,761,000	6,585,000	14,101,000	4,096,000
Provision for (benefit from) income taxes	(13,349,000)	3,486,000	(14,094,000)	1,924,000
Interest (income) and other expense	(48,000)	(74,000)	(9,000)	(76,000)
Interest expense	2,519,000	2,852,000	5,107,000	6,177,000
Amortization of stock-based compensation	1,080,000	1,019,000	1,827,000	1,989,000
Amortization of intangibles	5,268,000	6,032,000	10,537,000	12,087,000
Depreciation	3,317,000	3,568,000	6,663,000	7,317,000
Settlement of intellectual property litigation	0	(9,979,000)	0	(9,979,000)
Adjusted EBITDA	14,548,000	13,489,000	24,132,000	23,535,000
Purchases of property, plant and equipment	1,728,000	2,072,000	2,836,000	4,147,000
Total assets	822,651,000	883,508,000	822,651,000	883,508,000	$ 832,063,000
Unallocated
Segment Reporting Information [Line Items]
Net sales	0	0	0	0
Operating income (loss)	(3,740,000)	4,647,000	(7,669,000)	(1,679,000)
Net income (loss)	7,116,000	(1,507,000)	1,396,000	(9,512,000)
Provision for (benefit from) income taxes	(13,342,000)	3,351,000	(14,093,000)	1,766,000
Interest (income) and other expense	(4,000)	9,000	(11,000)	12,000
Interest expense	2,490,000	2,794,000	5,039,000	6,055,000
Amortization of stock-based compensation	1,080,000	1,019,000	1,827,000	1,989,000
Amortization of intangibles	0	0	0	0
Depreciation	272,000	387,000	559,000	798,000
Settlement of intellectual property litigation		(9,979,000)		(9,979,000)
Adjusted EBITDA	(2,388,000)	(3,926,000)	(5,283,000)	(8,871,000)
Purchases of property, plant and equipment	121,000	7,000	177,000	77,000
Total assets	40,809,000	66,326,000	40,809,000	66,326,000
Interest expense related to Credit Facility	2,350,000	2,708,000	4,815,000	5,883,000
Commercial Solutions Segment | Operating Segments
Segment Reporting Information [Line Items]
Net sales	85,824,000	82,103,000	161,938,000	158,281,000
Operating income (loss)	8,922,000	5,864,000	13,714,000	8,962,000
Net income (loss)	8,958,000	5,730,000	13,660,000	8,743,000
Provision for (benefit from) income taxes	(7,000)	135,000	(1,000)	158,000
Interest (income) and other expense	(58,000)	(60,000)	(10,000)	(62,000)
Interest expense	29,000	59,000	65,000	123,000
Amortization of stock-based compensation	0	0	0	0
Amortization of intangibles	4,424,000	4,413,000	8,849,000	8,849,000
Depreciation	2,457,000	2,429,000	4,900,000	5,016,000
Settlement of intellectual property litigation		0		0
Adjusted EBITDA	15,803,000	12,706,000	27,463,000	22,827,000
Purchases of property, plant and equipment	1,418,000	1,652,000	2,377,000	3,647,000
Total assets	602,872,000	620,147,000	602,872,000	620,147,000
Commercial Solutions Segment | Intersegment Eliminations
Segment Reporting Information [Line Items]
Intersegment sales	2,328,000	3,059,000	4,949,000	6,485,000
Government Solutions Segment | Operating Segments
Segment Reporting Information [Line Items]
Net sales	47,907,000	56,925,000	93,362,000	116,533,000
Operating income (loss)	(299,000)	2,338,000	(940,000)	4,838,000
Net income (loss)	(313,000)	2,362,000	(955,000)	4,865,000
Provision for (benefit from) income taxes	0	0	0	0
Interest (income) and other expense	14,000	(23,000)	12,000	(26,000)
Interest expense	0	(1,000)	3,000	(1,000)
Amortization of stock-based compensation	0	0	0	0
Amortization of intangibles	844,000	1,619,000	1,688,000	3,238,000
Depreciation	588,000	752,000	1,204,000	1,503,000
Settlement of intellectual property litigation		0		0
Adjusted EBITDA	1,133,000	4,709,000	1,952,000	9,579,000
Purchases of property, plant and equipment	189,000	413,000	282,000	423,000
Total assets	$ 178,970,000	$ 197,035,000	$ 178,970,000	$ 197,035,000

Goodwill (Details)

Goodwill (Details)	3 Months Ended	6 Months Ended
	Jan. 31, 2018USD ($)operating_segment	Jan. 31, 2018USD ($)operating_segment	Aug. 01, 2017$ / shares	Jul. 31, 2017USD ($)
Goodwill [Line Items]
Goodwill	$ 290,633,000	$ 290,633,000		$ 290,633,000
Number of reportable segments | operating_segment	2	2
Commercial Solutions Segment
Goodwill [Line Items]
Goodwill	$ 231,440,000	$ 231,440,000		231,440,000
Reporting unit, percentage of fair value in excess of carrying amount			17.80%
Government Solutions Segment
Goodwill [Line Items]
Goodwill	$ 59,193,000	$ 59,193,000		$ 59,193,000
Reporting unit, percentage of fair value in excess of carrying amount			52.90%
Common Stock
Goodwill [Line Items]
Common stock price (in dollars per share) | $ / shares			$ 18.47

Intangible Assets (Details)

Intangible Assets (Details) - USD ($)	Jan. 31, 2018	Jul. 31, 2017	Jan. 31, 2018	Jan. 31, 2017	Jan. 31, 2018	Jan. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 361,095,000	$ 361,095,000	$ 361,095,000		$ 361,095,000
Accumulated amortization	109,761,000	99,224,000	109,761,000		109,761,000
Net carrying amount	251,334,000	$ 261,871,000	251,334,000		251,334,000
Amortization of intangibles			5,268,000	$ 6,032,000	10,537,000	$ 12,087,000
Amortization expense - year one	21,075,000		21,075,000		21,075,000
Amortization expense - year two	17,155,000		17,155,000		17,155,000
Amortization expense - year three	17,155,000		17,155,000		17,155,000
Amortization expense - year four	16,196,000		16,196,000		16,196,000
Amortization expense - year five	$ 14,955,000		14,955,000		14,955,000
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period	20 years 3 months 18 days	20 years 3 months 18 days
Gross carrying amount	$ 249,831,000	$ 249,831,000	249,831,000		249,831,000
Accumulated amortization	48,636,000	41,923,000	48,636,000		48,636,000
Net carrying amount	$ 201,195,000	$ 207,908,000	201,195,000		201,195,000
Technologies
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period	12 years 3 months 18 days	12 years 3 months 18 days
Gross carrying amount	$ 82,370,000	$ 82,370,000	82,370,000		82,370,000
Accumulated amortization	51,504,000	48,623,000	51,504,000		51,504,000
Net carrying amount	$ 30,866,000	$ 33,747,000	30,866,000		30,866,000
Trademarks and other
Finite-Lived Intangible Assets [Line Items]
Weighted average amortization period	16 years 4 months 22 days	16 years 4 months 22 days
Gross carrying amount	$ 28,894,000	$ 28,894,000	28,894,000		28,894,000
Accumulated amortization	9,621,000	8,678,000	9,621,000		9,621,000
Net carrying amount	$ 19,273,000	$ 20,216,000	$ 19,273,000		$ 19,273,000

Stockholders' Equity (Details)

Stockholders' Equity (Details) - USD ($)	Feb. 16, 2018	Nov. 17, 2017	Jun. 30, 2016	Jan. 31, 2018	Jan. 31, 2017	Mar. 07, 2018
Class of Stock [Line Items]
Number of common stock sold in public offering (in shares)			7,145,000
Price per share (in dollars per share)			$ 14
Proceeds from sale of common stock			$ 95,029,000
Aggregate registered amount available for sale of securities under shelf registration statement				$ 74,970,000
Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract]
Stock repurchase program, remaining authorized repurchase amount				8,664,000
Maximum amount authorized by the Board of Directors for repurchases of the Company's common stock				$ 100,000,000
Repurchases of common stock (in shares)				0	0
Dividends [Abstract]
Dividends, cash paid (in dollars per share)		$ 0.10
Subsequent Event
Class of Stock [Line Items]
Aggregate registered amount available for sale of securities under shelf registration statement						$ 74,970,000
Treasury Stock Transactions, Excluding Value of Shares Reissued [Abstract]
Stock repurchase program, remaining authorized repurchase amount						$ 8,664,000
Dividends [Abstract]
Quarterly dividend payment amount per share (in dollars per share)						$ 0.10
Dividends, cash paid (in dollars per share)	$ 0.10

Legal Proceedings and Other M61

Legal Proceedings and Other Matters Commitments and Contingencies (Details)	1 Months Ended
	Oct. 31, 2014USD ($)
Other Matters
Loss Contingencies [Line Items]
Sales value of equipment	$ 288,000