ZAGG (ZAGG) 10-Q 7 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Nov. 05, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	ZAGG INC
Entity Central Index Key	1,296,205
Trading Symbol	ZAGG
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Type	10-Q
Document Period End Date	Sep. 30, 2018
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2,018
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		27,793,179
Entity Emerging Growth Company	false
Entity Small Business	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 17,780	$ 24,989
Accounts receivable, net of allowances of $707 and $734	115,801	123,220
Income taxes receivable	941	0
Inventories	78,666	75,046
Prepaid expenses and other current assets	6,649	4,547
Total current assets	219,837	227,802
Property and equipment, net of accumulated depreciation of $15,284 and $12,540	13,936	13,444
Intangible assets, net of accumulated amortization of $75,151 and $66,639	32,505	39,244
Deferred income tax assets	22,134	24,403
Goodwill	12,570	12,272
Other assets	1,667	3,426
Total assets	302,649	320,591
Current liabilities:
Accounts payable	67,355	96,472
Income tax payable	0	2,052
Sales returns liability	43,506	34,536
Accrued wages and wage related expenses	5,812	5,652
Accrued liabilities	8,091	8,168
Deferred revenue	0	315
Current portion of line of credit	0	23,475
Current portion of long-term debt, net of deferred loan costs of $0 and $141	0	13,922
Total current liabilities	124,764	184,592
Non-current portion of line of credit	28,000	0
Total liabilities	152,764	184,592
Stockholders' equity:
Common stock, $0.001 par value; 100,000 shares authorized; 34,433 and 34,104 shares issued	34	34
Treasury stock, 6,448 and 6,065 common shares at cost	(43,734)	(37,637)
Additional paid-in capital	95,642	96,145
Accumulated other comprehensive loss	(853)	(348)
Retained earnings	98,796	77,805
Total stockholders' equity	149,885	135,999
Total liabilities and stockholders' equity	$ 302,649	$ 320,591

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Allowances for doubtful accounts	$ 707	$ 734
Accumulated depreciation on property and equipment	15,284	12,540
Accumulated amortization on intangible assets	75,151	66,639
Deferred loan costs, current	$ 0	$ 141
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	34,433,000	34,104,000
Treasury stock, common shares	6,448,000	6,065,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Net sales	$ 141,087	$ 134,398	$ 371,718	$ 342,571
Cost of sales	88,916	86,006	244,297	229,749
Gross profit	52,171	48,392	127,421	112,822
Operating expenses:
Advertising and marketing	3,089	2,627	8,322	7,703
Selling, general and administrative	27,349	26,720	78,692	78,727
Transaction costs	618	96	635	611
Impairment of intangible asset	0	0	0	1,959
Amortization of intangible assets	2,859	3,014	8,404	9,040
Total operating expenses	33,915	32,457	96,053	98,040
Income from operations	18,256	15,935	31,368	14,782
Other income (expense):
Interest expense	(286)	(417)	(1,132)	(1,527)
Other (expense) income	(176)	18	(362)	67
Total other expense	(462)	(399)	(1,494)	(1,460)
Income before provision for income taxes	17,794	15,536	29,874	13,322
Income tax provision	(3,168)	(5,760)	(5,003)	(6,281)
Net income	$ 14,626	$ 9,776	$ 24,871	$ 7,041
Earnings (loss) per share attributable to stockholders:
Basic earnings per share (in usd per share)	$ 0.52	$ 0.35	$ 0.88	$ 0.25
Diluted earnings per share (in usd per share)	$ 0.51	$ 0.34	$ 0.87	$ 0.25

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 14,626	$ 9,776	$ 24,871	$ 7,041
Other comprehensive (loss) gain, net of tax
Foreign currency translation (loss) gain	175	326	(505)	1,171
Total other comprehensive income (loss)	175	326	(505)	1,171
Total comprehensive income	$ 14,801	$ 10,102	$ 24,366	$ 8,212

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income	$ 24,871	$ 7,041
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	2,165	2,536
Depreciation and amortization	13,330	16,508
Deferred income taxes	2,266	5,203
Loss on disposal of property and equipment	9	13
Loss on deferred loan costs with debt modification	243	0
Amortization of deferred loan costs	147	192
Impairment of intangible asset	0	1,959
Changes in operating assets and liabilities:
Accounts receivable, net	7,735	(12,054)
Inventories	(1,751)	1,636
Prepaid expenses and other current assets	(694)	(104)
Other assets	1,618	918
Accounts payable	(30,469)	(3,526)
Income tax (payable) receivable	(3,153)	3,195
Sales returns liability	3,831	907
Accrued wages and wage related expenses	58	(520)
Accrued liabilities	(539)	1,143
Deferred revenue	0	(59)
Other	191	(416)
Net cash provided by operating activities	19,858	24,572
Cash flows from investing activities:
Purchase of property and equipment	(4,444)	(3,792)
Proceeds from disposal of equipment	26	28
Purchase of BRAVEN	(3,951)	0
Net cash used in investing activities	(8,369)	(3,764)
Cash flows from financing activities:
Payment of deferred loan costs	(294)	(157)
Proceeds from revolving credit facility	238,994	296,485
Payments on revolving credit facility	(246,448)	(311,528)
Payments on term loan facility	(2,084)	(4,687)
Purchase of treasury stock	(6,097)	(1,492)
Payment of withholding on restricted stock units	(2,630)	(240)
Proceeds from issuance of stock under employee stock purchase plan	55	29
Net cash used in financing activities	(18,504)	(21,590)
Effect of foreign currency exchange rates on cash equivalents	(194)	572
Net decrease in cash and cash equivalents	(7,209)	(210)
Cash and cash equivalents at beginning of the period	24,989	11,604
Cash and cash equivalents at end of the period	17,780	11,394
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	1,127	1,361
Cash paid (refunded) during the period for income taxes, net	5,729	(2,317)
Supplemental disclosure of non-cash investing and financing activities:
Purchase of fixed assets financed through accounts payable	1,036	1,719
Withholding tax on restricted stock units recorded in accrued wages and wage related expenses	93	0
Modification of debt that resulted in payment of existing term loan balance	11,991	0
Indemnity Holdback of BRAVEN acquisition included in accrued expenses	$ 500	$ 0

Nature of Operations and Basis

Nature of Operations and Basis of Presentation	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
NATURE OF OPERATIONS AND BASIS OF PRESENTATION	NATURE OF OPERATIONS AND BASIS OF PRESENTATION ZAGG Inc and its subsidiaries (“ZAGG,” or the “Company”) are innovation leaders in mobile tech accessories for smartphones and tablets. For over 10 years, the Company has developed creative product solutions that enhance and protect mobile devices for consumers around the world. The Company has an award-winning product portfolio that includes screen protection, power cases, power management, wireless charging, personal audio, mobile keyboards, and cases, sold under the ZAGG®, InvisibleShield®, mophie®, IFROGZ®, and BRAVEN® brands. The accompanying unaudited condensed consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) have been condensed or omitted pursuant to such rules and regulations. These condensed consolidated financial statements reflect all adjustments (consisting only of normal recurring adjustments) that, in the opinion of management, are necessary to present fairly the financial position, the results of operations, and cash flows of the Company for the periods presented. The Company suggests that these condensed consolidated financial statements be read in conjunction with the consolidated financial statements and the notes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017 (the “2017 Form 10-K”). Operating results for the interim periods are not necessarily indicative of the results that may be expected for the full year. The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts 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 revenue and expenses during the reporting period. Actual results could differ from those estimates. Significant Accounting Policies The Company’s significant accounting policies are described in Note 1 to the 2017 Form 10-K. Except for the changes below, the Company has consistently applied the accounting policies to all periods presented in these condensed consolidated financial statements. Adoption of Accounting Standards Codification (“ASC”) Topic 606, “Revenue from Contracts with Customers” The Company adopted ASC Topic 606 , “Revenue from Contracts with Customers” (“Topic 606”) with a date of initial application of January 1, 2018. As a result of this adoption, the Company has changed its accounting policy for revenue recognition as detailed below. The Company applied Topic 606 on January 1, 2018, using the modified retrospective approach, with the cumulative effect of adopting the new standard being recognized in retained earnings at January 1, 2018. Therefore, the prior period comparative information has not been adjusted and continues to be reported under ASC Topic 605, “Revenue Recognition” (“Topic 605”). The adoption of Topic 606 resulted in an increase in accounts receivable of $115; an increase in prepaid expenses and other current assets of $1,255 for the recognition of the right of return assets; an increase in sales return liability of $5,250 for the recognition of the sales return liability on a gross basis and for the change in estimating refund liabilities under Topic 606; an increase in accrued liabilities of $314; a decrease in deferred revenue of $314; and a decrease of $3,880 in retained earnings as a cumulative effect of adoption. The largest driver of changes for the adoption of Topic 606 was the change in estimate for price concessions offered to end customers. Under Topic 605, price concessions to end customers were recognized when such incentives were explicitly offered to the end customer, whereas under Topic 606 such incentives are estimated and recorded at the time of the sale of products to the Company’s customers. The accounts that changed under Topic 606 for the condensed consolidated balance sheet as of September 30, 2018 have been outlined as follows: Condensed consolidated balance sheet changes Reported as of September 30, 2018 Adjustments as of September 30, 2018 Balances Without Adoption of Topic 606 as of September 30, 2018 Accounts receivable, net of allowances $ 115,801 $ (233) $ 115,568 Prepaid expenses and other current assets 6,649 (1,139) 5,510 Sales returns liability 43,506 (6,929) 36,577 Accrued liabilities 8,091 (439) 7,652 Deferred revenue — 439 439 Retained earnings 98,796 5,557 104,353 The accounts that changed under Topic 606 for the condensed consolidated statement of operations for the three months ended September 30, 2018 have been outlined as follows : Condensed consolidated statement of operations changes Reported for the Three Months Ended September 30, 2018 Adjustments for the Three Months Ended September 30, 2018 Amounts Without Adoption of Topic 606 for the Three Months Ended September 30, 2018 Net sales $ 141,087 $ 3,494 $ 144,581 Cost of sales 88,916 161 89,077 The accounts that changed under Topic 606 for the condensed consolidated statement of operations for the nine months ended September 30, 2018 have been outlined as follows: Condensed consolidated statement of operations changes Reported for the Nine Months Ended September 30, 2018 Adjustments for the Nine Months Ended September 30, 2018 Amounts Without Adoption of Topic 606 for the Nine Months Ended September 30, 2018 Net sales $ 371,718 $ 5,544 $ 377,262 Cost of sales 244,297 (13) 244,284 Revenue recognition accounting policy The Company’s revenue is primarily derived from (1) sales of its products through its indirect channel, including retailers and distributors; (2) sales of its products through its direct channel, including www.ZAGG.com and www.mophie.com (The URLs are included here as inactive textual references and information contained on, or accessible through, the websites is not a part of, and is not incorporated by reference into, this report) and its corporate-owned ZAGG-branded store; and (3) from franchise fees derived from the on-boarding of new franchisees and sales of its products to franchisees. The Company’s revenue is measured based on the amount of consideration it expects to receive, reduced by estimates for variable consideration which includes sales returns, discounts, and other credits. The observable standalone selling prices of products sold are based on the prices charged to customers and are mutually agreed upon by both parties before any orders are authorized. For substantially all of the Company's sales, the performance obligation is met and revenue is recognized at a point in time when control of the goods is transferred to the customer, which generally occurs upon delivery to the customer or to the shipping carrier. For franchise fees, revenue is derived from the sale of licenses, training, equipment and marketing, among other items. The Company recognizes franchise fee revenue for performance obligations over the franchise contractual term using a straight-line basis. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, and are collected by the Company from a customer, are excluded from revenue. Sales returns, discounts and other credits The nature of the Company’s contracts gives rise to several types of variable consideration, including sales returns, discounts, and other credits. Certain customers receive credit-based incentives or credits, which are accounted for as variable consideration in the form of credit memos off future purchases from the Company. The Company estimates these amounts based on the expected amount to be provided to customers and reduces revenue accordingly for each transaction. The Company estimates a reserve for sales returns, discounts, and other credits, and records the respective estimated reserve amounts, including a right to return asset when a product is expected to be returned and resold. Historical experience, actual claims, and customer return rights are the key factors used in determining the estimated sales returns, discounts, and other credits. Contract balances The following table provides information about receivables, right of return assets, contract liabilities, refund liabilities, and warranty liabilities from contracts with customers as of September 30, 2018: September 30, 2018 Receivables, which comprises the balance in accounts receivable, net of allowances $ 115,801 Right of return assets, which are included in prepaid expenses and other current assets 1,139 Refund liabilities, which are included in sales return liability 39,195 Warranty liabilities, which are included in sales return liability 4,311 Contract liabilities, which are included in accrued liabilities 439 The current balance of the right of return assets is the estimated amount of inventory to be returned that is expected to be resold. The current balance of contract liabilities primarily relates to the advance consideration received from customers for products for which transfer of control has not yet occurred, and therefore recognition of revenue is deferred until the transfer of control has been completed. The current balance of refund liabilities is the expected amount of estimated sales returns, discounts and other credits from sales that have occurred. The current balance of warranty liabilities is the expected amount of warranty claim returns from sales that have occurred. The following summarizes the activities in the Company’s warranty liabilities for the nine months ended September 30, 2018: Balance as of December 31, 2017 $ 4,189 Additions 9,249 Warranty claims charged (9,125) Foreign currency translation gain (2) Balance as of September 30, 2018 $ 4,311 Practical expedients and policy elections The Company applies the following practical expedients in its application of Topic 606: • The Company does not adjust the transaction price for significant financing components for periods less than one year. • The Company recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets that the Company otherwise would have recognized is one year or less. These costs are included in selling, general, and administrative expenses. • The Company recognizes the cost for shipping and handling as a fulfillment activity after control over products have transferred to the customer. For product sales, the standard shipping terms are FOB shipping point under which revenue is recorded when the product is shipped, net of estimated returns and discounts. Shipping and handling costs are included in cost of sales. • The Company does not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which the Company recognizes revenue at the amount to which it has the right to invoice for services performed. Disaggregation of revenue from contracts with customers In the following tables, revenue from contracts with customers are disaggregated by key product lines, key distribution channels, and key geographic regions. The percentage of net sales related to the Company’s key product lines for the three and nine months ended September 30, 2018 and 2017, was a pproximately as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Screen Protection 63% 57% 56% 52% Power Management 22% 19% 27% 18% Power Cases 5% 12% 6% 18% Keyboards 6% 5% 6% 6% Audio 3% 6% 4% 6% Other 1% 1% 1% 0 % The percentage of net sales related to the Company’s key distribution channels for the three and nine months ended September 30, 2018 and 2017, was approximately as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Indirect channel 88% 90% 88% 89% Website 7% 7% 8% 8% Franchisees 5% 3% 4% 3% The percentage of net sales related to the Company’s key geographic regions for the three and nine months ended September 30, 2018 an d 2017, wa s approximately as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 United States 85% 85% 84% 86% Europe 8% 9% 9% 8% Other 7% 6% 7% 6% Recent Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02, “ Leases ” (“Topic 842”), which modifies the accounting for leases, intending to increase transparency and comparability of organizations by requiring balance sheet presentation of leased assets and increased financial statement disclosure of leasing arrangements. Topic 842 will require entities to recognize a liability for their lease obligations and a corresponding asset representing the right to use the underlying asset over the lease term. Lease obligations are to be measured at their present value and accounted for using the effective interest method. The accounting for the leased asset will differ slightly depending on whether the agreement is deemed to be a financing or operating lease. For financing leases, the leased asset is depreciated on a straight-line basis and depreciation expense is recorded separately from the interest expense in the statements of operations, resulting in higher expense in the earlier part of the lease term. For operating leases, the depreciation and interest expense components are combined, recognized evenly over the term of the lease, and presented as a reduction to operating income. Topic 842 requires that assets and liabilities be presented or disclosed separately, and requires additional disclosure of certain qualitative and quantitative information related to these lease agreements. Topic 842 is effective for annual and interim periods beginning after December 15, 2018. In addition, in July 2018, the FASB issued ASU No. 2018-11 “ Targeted Improvements ” to provide an additional transition method whereby entities are allowed to initially apply Topic 842 by adjusting equity at the adoption date. The Company plans to adopt the standard using the modified retrospective approach beginning January 1, 2019. The Company expects to elect the package of practical expedients upon adoption, which allows for the application of the standard solely to the transition period in 2019 but does not require application to prior fiscal comparative periods presented. Reclassification of Prior Year Presentation Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on reported results of operations. A reclassification has been made with a $2,347 reduction to accrued liabilities and a $2,347 increase to sales returns liability, both current liabilities.

Acquisition of Braven

Acquisition of Braven	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
ACQUISITION OF BRAVEN	ACQUISITION OF BRAVEN On July 20, 2018 (the “Acquisition Date”), ZAGG Amplified, Inc., a Delaware corporation and wholly-owned subsidiary of the Company (the “Buyer”), entered into and closed an asset purchase agreement with Incipio LLC (“Incipio”) to acquire BRAVEN Audio (“BRAVEN”) (the “BRAVEN Acquisition”). In connection with the BRAVEN Acquisition, the Buyer acquired accounts receivable, inventory, property and equipment, intellectual property, a product and engineering team, and certain other assets as well as assumed certain liabilities for total consideration of $5,000 in cash, adjusted by accounts receivable and accounts payable of $549 for a net purchase price of $4,451. As agreed in the purchase agreement, the Buyer retained a reserve of $500 for indemnity claims to be paid 12 months (the “Indemnity Holdback") following the Acquisition Date; the Indemnity Holdback is included in accrued liabilities in the accompanying condensed consolidated balance sheet as of September 30, 2018. Any remaining amount of the Indemnity Holdback shall be remitted to Incipio as specified in the purchase agreement. BRAVEN products include rugged Bluetooth® speakers and earbuds, which are expected to expand the Company’s product profile and markets and may amplify its brands and increase the long-term value of its business. The following summarizes the purchase consideration and the cash outflow at the Acquisition Date: September 30, 2018 Net purchase price $ 4,451 Indemnity Holdback (500) Total cash outflow $ 3,951 The net purchase price of $4,451 has been allocated to identifiable assets acquired and liabilities assumed based on their respective fair values. The excess of the purchase price over the fair value of the tangible and intangible assets acquired and liabilities assumed is recorded as goodwill. The following table summarizes the estimates of the fair values of the identifiable assets acquired and liabilities assumed as of the Acquisition Date: September 30, 2018 Accounts receivable $ 650 Inventory 2,320 Property and equipment 368 Amortizable identifiable intangible assets 1,774 Goodwill 298 Accounts payable (959) Total $ 4,451 Identifiable Intangible Assets Classes of acquired intangible assets include patents and technology, trade names and backlog. The fair value of the identifiable intangible assets was determined using various valuation methods, including the income and cost approaches. For assets valued under the income approach, the estimate of the present value of expected future cash flows for each identifiable asset was based on discount rates which incorporate a risk premium to take into account the risks inherent in those expected cash flows. The expected cash flows were estimated using available historical data adjusted based on the Company’s historical experience and the expectations of market participants. The cost approach determined the valuation of the identifiable intangible assets by applying the concept of replacement cost whereby a prudent investor is believed not willing to pay for an asset more than the cost to replace such asset. The amounts assigned to each class of intangible asset and the related weighted average amortization periods are as follows: Intangible Asset Class Weighted Average Amortization Period Patents and technology $ 872 3.1 years Trade names 901 10.0 years Backlog 1 0.5 years Total $ 1,774 Goodwill Goodwill represents the excess of the BRAVEN purchase price over the fair value of the assets acquired and liabilities assumed. The Company believes that the primary factors supporting the amount of the goodwill recognized are the significant growth opportunities and expected synergies of the combined entity.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
INVENTORIES	INVENTORIES Inventories consisted of the following as of September 30, 2018 and December 31, 2017: September 30, 2018 December 31, 2017 Finished goods $ 78,398 $ 74,734 Raw materials 268 312 Total inventories $ 78,666 $ 75,046 Included in prepaid expenses and other current assets were inventory deposits with third-party manufacturers of $2,361 and $1,906 as of September 30, 2018 and December 31, 2017, respectively.

Goodwill and Intangible Assets

Goodwill and Intangible Assets	9 Months Ended
	Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND INTANGIBLE ASSETS	GOODWILL AND INTANGIBLE ASSETS During the three and nine months ended September 30, 2018, goodwill increased in connection with the BRAVEN Acquisition. The following table summarizes the changes in goodwill during the nine months ended September 30, 2018: Balance as of December 31, 2017 $ 12,272 Increase in connection with BRAVEN Acquisition 298 Balance as of September 30, 2018 $ 12,570 There was no change in goodwill during the three and nine months ended September 30, 2017. In connection with the BRAVEN Acquisition, intangible assets increased $1,774 for patents and technology, trade names and backlog for the three and nine months ended September 30, 2018. There were no additions to intangible assets for the three and nine months ended September 30, 2017. There were no impairments of intangible assets for the three and nine months ended September 30, 2018. Additionally, there were no impairments to intangible assets for the three months ended September 30, 2017. The following table summarizes the impairments of gross intangible assets for the nine months ended September 30, 2017: Balance as of December 31, 2016 $ 108,659 Impairment loss on patent (2,777) Balance as of September 30, 2017 $ 105,882 On April 11, 2017, the Company received a final court order stating that the claims of one of its patents were either not patentable or canceled. Accordingly, management determined that the patent’s carrying value was not recoverable through future cash flows and was impaired as of March 31, 2017. Consequently, for the nine months ended September 30, 2017, the Company recorded an impairment loss to intangible assets consisting of a reduction of gross carrying amount of $2,777, accumulated amortization of $818, and net carrying value of $1,959 to reduce the net carrying value of the canceled patent to $0. Intangible assets, net of accumulated amortization as of September 30, 2018 and December 31, 2017, were as follows: September 30, 2018 December 31, 2017 Trade names $ 16,340 $ 17,854 Patents and technology 9,537 10,981 Customer relationships 5,752 9,259 Non-compete agreements 868 1,137 Other 8 13 Total intangible assets, net of accumulated amortization $ 32,505 $ 39,244 The total weighted average useful lives of intangible assets as of September 30, 2018 and December 31, 2017, was 8.1 years and 8.2 years, respectively.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXESFor interim periods, the tax provision is determined utilizing an estimate of the Company’s annual effective tax rate adjusted for discrete items, if any. The Company’s effective tax rate for the three and nine months ended September 30, 2018 was 18% and 17%, respectively. The Company’s effective tax rate for the three and nine months ended September 30, 2017 was 37% and 47%, respectively. The change in the effective tax rate for the three and nine months ended September 30, 2018 compared to the three and nine months ended September 30, 2017 was due to several factors including but not limited to a change in the federal statutory rate from 35% to 21% and the effect of discrete items. The Company’s effective tax rate will generally differ from the U.S. Federal statutory rate of 21%, due to state taxes, permanent items, the Company’s global tax strategy, and the inclusion of global intangible low taxed income and the corresponding foreign tax credit.

Debt and Line of Credit

Debt and Line of Credit	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
DEBT AND LINE OF CREDIT	DEBT AND LINE OF CREDIT Long-term debt, net as of September 30, 2018 and December 31, 2017, was as follows: September 30, 2018 December 31, 2017 Line of credit $ 28,000 $ 23,475 Long-term debt, net of deferred loan costs of $0 and $141 — 13,922 Total debt outstanding 28,000 37,397 Current portion of total debt outstanding, net of deferred loan costs of $0 and $141 — 37,397 Total long-term debt outstanding $ 28,000 $ — On April 12, 2018, the Company entered into an Amended and Restated Credit and Security Agreement (the “New Credit Agreement”) with KeyBank National Association, as Administrative Agent, Swing Line Lender and Issuing Lender, KeyBanc Capital Markets Inc., as Sole Lead Arranger and Sole Book Runner, and other members of the lender group. The New Credit Agreement consists of an $85,000 secured revolving credit facility (the “Revolver”), which is not subject to borrowing base limitations. In addition, at the Company’s option, up to $40,000 of the Revolver may be made available for the issuance of letters of credit. Proceeds from the Revolver were used to fully retire the term loan and thus the Revolver is the only credit instrument effective April 12, 2018. The Company had a loss of $243 of deferred loan costs that were written off as of the New Credit Agreement effective date, and the Company carried over $521 of previously capitalized deferred loan costs with the modification of the existing debt. The Company capitalized $294 in additional debt issuance costs, for a new beginning balance of $815 of deferred loan costs, with $739 remaining as of September 30, 2018 to be amortized which is included in other assets in the condensed consolidated balance sheet. The Revolver initially bears interest at an annual rate, at the Company’s option, of (i) the Base Rate (as defined in the Credit Agreement) plus a margin of 0.25% to 1.375% based on the prior quarter-end Leverage Ratio or (ii) the Eurodollar Rate (as defined in the Credit Agreement) plus a margin of 1.25% to 2.375% based on the prior quarter-end Leverage Ratio. The Revolver matures April 11, 2023, subject to early termination in the event of default. In addition, the Company is required to pay a monthly Applicable Commitment Fee Rate (as defined in the New Credit Agreement) that can fluctuate between 0.175% and 0.275% based on the Leverage Ratio (as defined in the New Credit Agreement). The commitment fee is calculated monthly using the Maximum Revolving Amount (as defined in the New Credit Agreement) at the end of each calendar month, minus the Revolving Credit Exposure (exclusive of the Swing Line Exposure) (each as defined in the New Credit Agreement) at the end of such day, multiplied by the Applicable Commitment Fee Rate in effect on such day divided by three hundred sixty (360). The monthly commitment fee is payable quarterly in arrears, commencing on July 1, 2018 and continuing on each regularly scheduled payment date thereafter. The New Credit Agreement contains customary representations and warranties and restrictive covenants. The New Credit Agreement also contains affirmative and negative covenants requiring, among other things, the Company to meet certain financial ratio tests and to provide certain information to the lenders. The New Credit Agreement also includes financial maintenance covenants that require compliance with a Leverage Ratio and a Fixed Charge Coverage Ratio (each as defined in the New Credit Agreement), tested at the end of each fiscal quarter commencing with the three months ended June 30, 2018. The New Credit Agreement also contains customary events of default. If an event of default occurs, the lenders under the Credit Agreement would be entitled to take various actions, including the acceleration of amounts due thereunder and all other actions permitted to be taken by a secured creditor. As part of the New Credit Agreement, the lockbox arrangement requirement in the prior agreement was terminated and thus the Company now has full dominion of cash upon receipt from customers. Because of the lockbox arrangement in the prior agreement, amounts outstanding under the Revolver were classified as a current liability because cash receipts were required to be automatically swept against the Revolver. Because the New Credit Agreement does not have a lockbox arrangement and the Revolver does not mature until 2023, the Revolver is classified as a non-current liability.

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK-BASED COMPENSATION	STOCK-BASED COMPENSATION The grant of restricted stock units with respective weighted-average fair value per share for the three and nine months ended September 30, 2018 and 2017 is summarized as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Granted 14 45 293 479 Weighted average fair value per share $ 15.80 $ 8.65 $ 12.64 $ 6.77 The fair value of the restricted stock units granted is based on the closing share price of the Company’s common stock on the date of grant. The restricted stock units vest annually on a straight-line basis over a nine-month (annual board of directors’ grant) to a three-year vesting term, depending on the terms of the individual grant. As part of the 293 and 479 restricted stock units granted during the nine months ended September 30, 2018 and 2017, the Company granted 182 and 372 restricted stock units, respectively, to certain executives and employees of the Company where vesting is linked to specific performance criterion. These performance-based restricted stock units only vest upon the (1) Company’s achievement of specified thresholds of net sales, Adjusted EBITDA, or specific goals for the individual executive, and (2) continued employment through the applicable vesting date. The estimated fair value of the restricted stock units is recognized on a straight-line basis over the requisite service period of the award, which is generally the vesting term of the award. The following is stock-based compensation expenses related to restricted stock units recorded for the three and nine months ended September 30, 2018 and 2017, which is included as a component of selling, general, and administrative expense on the condensed consolidated statement of operations: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Stock-based compensation expense related to restricted stock units $ 757 $ 899 $ 2,165 $ 2,536 During the nine months ended September 30, 2018 and 2017, certain Company employees elected to receive a net amount of shares upon the vesting of restricted stock unit grants in exchange for the Company paying up to the maximum statutory withholding amount of the employees’ tax liabilities for the fair value of the award on the vesting date. This resulted in the Company recording $2,723 and $240 reflected as a reduction of additional paid-in capital, respectively. Of the $2,723 recorded as a reduction of additional paid-in capital, $93 was included in accrued wages and wage related expenses as of September 30, 2018.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHAREBasic earnings per common share excludes dilution and is computed by dividing net earnings by the weighted average number of shares of common stock outstanding during the period. Diluted earnings per common share reflects the potential dilution that could occur if stock options and restricted stock, or other common stock equivalents were exercised or converted into common stock. The dilutive effect of stock options or other common stock equivalents is calculated using the treasury stock method. The following is a reconciliation of the numerator and denominator used to calculate basic earnings per share and diluted earnings per share for the three and nine months ended September 30, 2018 and 2017: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Net income $ 14,626 $ 9,776 $ 24,871 $ 7,041 Weighted average shares outstanding: Basic 28,241 27,969 28,250 27,996 Dilutive effect of restricted stock units 322 412 390 233 Diluted 28,563 28,381 28,640 28,229 Earnings per share: Basic $ 0.52 $ 0.35 $ 0.88 $ 0.25 Diluted $ 0.51 $ 0.34 $ 0.87 $ 0.25

Treasury Stock

Treasury Stock	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Treasury Stock	TREASURY STOCK During the fourth quarter of 2015, the Company’s board of directors authorized the repurchase of up to $20,000 of the Company’s outstanding common stock with no expiration date. As of September 30, 2018 and December 31, 2017, a total of $11,461 and $17,558 remained authorized under the stock repurchase program, respectively. The Company repurchased shares for the three and nine months ended September 30, 2018, presented as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Shares repurchased 201 — 383 234 Cash consideration paid $ 3,091 $ — $ 6,097 $ 1,492 Commissions to brokers included in cash consideration paid $ 8 $ — $ 15 $ 9 Weighted average price per share repurchased $ 15.36 $ — $ 15.90 $ 6.35 The consideration paid has been recorded within stockholders’ equity in the condensed consolidated balance sheet.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Operating Leases The Company leases office and warehouse space, office equipment, and a retail store location under operating leases that expire through 2026. Future minimum rental payments required under the operating leases as of September 30, 2018, were as follows: 2018 $ 567 2019 3,001 2020 2,829 2021 2,450 2022 2,510 Thereafter 4,068 Total operating lease commitments $ 15,425 For the three and nine months ended September 30, 2018, rent expense was $768 and $2,314, respectively. For the three and nine months ended September 30, 2017, rent expense was $736 and $2,179, respectively. Rent expense was recognized on a basis which approximates straight-line over the lease term and was recorded as a component of selling, general and administrative expense on the condensed consolidated statement of operations. Commercial Litigation ZAGG Inc and mophie, Inc. v. Anker Technology Co. Ltd. and Fantasia Trading LLC, United States District Court for the Central District of California, Case No. 8:17-CV-2193-DOC-DFM (the “Anker Lawsuit”) - On December 15, 2017, ZAGG and mophie filed the Anker Lawsuit alleging that Anker Technology Co. Ltd. (“Anker”) and Fantasia Trading LLC (“Fantasia”) infringe U.S. Patent Nos. 8,971,039, 9,077,013, 9,088,028, 9,088,029, 9,172,070, and 9,406,913 in connection with protective battery cases for smartphones. The Anker products accused of infringement include Anker’s Ultra Slim Extended Battery Case for iPhone® 6 / 6s (4.7 inch) with 2850mAh capacity; Premium Extended Battery Case for iPhone 6 / 6s (4.7 inch) with 3100mAh Capacity; PowerCore Case for iPhone 7 (4.7 inch), 80% Extra Battery; and PowerCore Case for iPhone 7 (4.7 inch), 95% Extra Battery. The complaint filed by ZAGG and mophie seeks monetary damages and an injunction against Anker. On March 12, 2018, Anker and Fantasia filed answers and counterclaims in the lawsuit. In their answers, Anker and Fantasia denied infringement of any valid claim and asserted counterclaims for non-infringement and invalidity of the patents at issue. The Company disputes Anker’s contentions and will defend the claims and otherwise respond to the allegations. The matter is scheduled for trial in November 2019. This matter is not expected to have a material adverse effect on the Company’s financial position, results of operations, or liquidity. SEC Investigation The Company has reached an agreement with the Staff of the SEC to settle the previously disclosed investigation related to facts and circumstances surrounding former Chief Executive Officer Robert Pedersen’s pledge and subsequent sale of Company shares and the fact that such pledges and sales were not disclosed in the Company’s 2011 10-K filed on March 15, 2012, or 2012 Proxy filed on April 27, 2012. Without admitting or denying the allegations contained in the order, the Company has agreed to pay a civil penalty in the amount of $75 to the SEC and has consented to the entry of an order with respect to violations of Section 13(a) of the Exchange Act and Rule 13a-1 promulgated thereunder, which relate to disclosures in the annual report. The agreement remains subject to final approval by the Commission. Other Litigation The Company is not a party to any other material litigation or claims at this time. While the Company currently believes that the amount of any ultimate probable loss for known matters would not be material to the Company’s financial condition, the outcome of these actions is inherently difficult to predict. In the event of an adverse outcome, the ultimate potential loss could have a material adverse effect on the Company’s financial condition or results of operations in a particular period. The Company establishes reserves when a particular contingency is probable and estimable. The Company has not accrued for any losses in the condensed consolidated financial statements as of September 30, 2018 due to the fact that either the losses are immaterial or the losses are not considered probable or estimable. The Company faces contingencies that are reasonably possible to occur; however, the reasonably possible exposure to losses cannot currently be estimated.

Concentrations

Concentrations	9 Months Ended
	Sep. 30, 2018
Risks and Uncertainties [Abstract]
CONCENTRATIONS	CONCENTRATIONS Concentration of credit risk Financial instruments which potentially subject the Company to concentrations of credit risk consist principally of cash and accounts receivable. The Company places its cash with high credit quality financial institutions. The Company maintains its cash in bank deposit accounts, which, at times, exceed federally insured limits. The Company has not experienced any losses in cash accounts for the nine months ended September 30, 2018 and 2017. As of September 30, 2018 and December 31, 2017, two separate customers exceeded 10% of the balance of accounts receivable, as follows: September 30, 2018 December 31, 2017 Superior Communications, Inc. (“Superior”) 45% 31% Best Buy Co., Inc. (“Best Buy”) 18% 18% No other customer account balances were more than 10% of accounts receivable as of September 30, 2018 and December 31, 2017. If one or more of the Company’s significant customers were to become insolvent or were otherwise unable to pay for the products provided, it would have a material adverse effect on the Company’s financial condition and results of operations. Concentration of suppliers The Company does not directly manufacture any of its products; rather, the Company employs various third-party manufacturing partners in the United States and Asia to perform these services on its behalf. The services employed by these third parties include the selection of sub-suppliers that provide raw materials and other components used in the manufacturing process. The Company has endeavored to use common components and readily available raw materials in the design of its products that can be sourced from multiple sub-suppliers. However, raw film used in our InvisibleShield film and InvisibleShield On-Demand (“ISOD”) products has been produced by a single supplier for many years. The film supplier has contractually agreed not to sell the raw materials to any of the Company’s competitors. Below is a high-level summary by product category of the manufacturing sources used by the Company: • Screen Protection – The screen product line is comprised of sales of InvisibleShield glass products, InvisibleShield film products, and ISOD film blanks. InvisibleShield glass products are sourced from factories in Asia with protective glass expertise, each of which uses a number of sub-suppliers for raw materials and other components. The InvisibleShield film and ISOD products are sourced through the Company’s third-party logistics partner, who purchases the raw film inventory from a single supplier (as discussed above). • Battery Cases and Power Management – The battery case and power management product lines consist of power products that are designed to provide on-the-go power and wireless charging for tablets, smartphones, laptops, cameras, and virtually all other electronic mobile devices. The power products are sourced from factories in Asia with battery expertise, each of which uses a number of sub-suppliers for raw materials and other components. • Keyboards – The keyboard product line consists of (1) device specific keyboards designed to fit individual tablets produced by original equipment manufacturers and (2) keyboards that are designed to be device agnostic and can be used on virtually any mobile device. The keyboard products are sourced from factories in Asia with keyboard expertise, each of which uses a number of sub-suppliers for raw materials and other components. • Audio – The audio product line consists of speakers, earbuds and headphones that are designed to be compatible with virtually all electronic mobile devices. The audio products are sourced from factories in Asia with audio expertise, each of which uses a number of sub-suppliers for raw materials and other components. The Company’s product and operations teams work closely with suppliers from initial product development and throughout the manufacturing process to ensure that (1) the supplier understands, and will build according to, the product specifications, (2) appropriate quality is maintained for the finished goods and for all sub-components, and (3) the supplier can meet the Company’s supply needs. Concentration of net sales For the three and nine months ended September 30, 2018 and 2017, Superior and Best Buy accounted for over 10% of net sales, as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Superior 36% 32% 33% 31% Best Buy 12% 12% 11% 10% For the three and nine months ended September 30, 2018 and 2017, no other customers accounted for greater than 10% of net sales. Although the Company has contracts in place governing the relationships with its retail distribution customers (“retailers”), the contracts are not long-term and all the retailers generally purchase from the Company on a purchase order basis. As a result, these retailers generally may, with little or no notice or penalty, cease ordering and selling the Company’s products, or materially reduce their orders. If any of these retailers cease selling the Company’s products, slow their rate of purchase of its products, or decrease the number of products they purchase, the Company’s results of operations could be adversely affected. Concentration of region The percentage of net sales by geographic region for the three and nine months ended September 30, 2018 and 2017, was approximately: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 United States 85% 85% 84% 86% Europe 8% 9% 9% 8% Other 7% 6% 7% 6%

Nature of Operations and Basi_2

Nature of Operations and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Revenue Recognition	Revenue recognition accounting policy The Company’s revenue is primarily derived from (1) sales of its products through its indirect channel, including retailers and distributors; (2) sales of its products through its direct channel, including www.ZAGG.com and www.mophie.com (The URLs are included here as inactive textual references and information contained on, or accessible through, the websites is not a part of, and is not incorporated by reference into, this report) and its corporate-owned ZAGG-branded store; and (3) from franchise fees derived from the on-boarding of new franchisees and sales of its products to franchisees. The Company’s revenue is measured based on the amount of consideration it expects to receive, reduced by estimates for variable consideration which includes sales returns, discounts, and other credits. The observable standalone selling prices of products sold are based on the prices charged to customers and are mutually agreed upon by both parties before any orders are authorized. For substantially all of the Company's sales, the performance obligation is met and revenue is recognized at a point in time when control of the goods is transferred to the customer, which generally occurs upon delivery to the customer or to the shipping carrier. For franchise fees, revenue is derived from the sale of licenses, training, equipment and marketing, among other items. The Company recognizes franchise fee revenue for performance obligations over the franchise contractual term using a straight-line basis. Taxes assessed by a governmental authority that are both imposed on and concurrent with a specific revenue-producing transaction, and are collected by the Company from a customer, are excluded from revenue. Sales returns, discounts and other credits The nature of the Company’s contracts gives rise to several types of variable consideration, including sales returns, discounts, and other credits. Certain customers receive credit-based incentives or credits, which are accounted for as variable consideration in the form of credit memos off future purchases from the Company. The Company estimates these amounts based on the expected amount to be provided to customers and reduces revenue accordingly for each transaction. The Company estimates a reserve for sales returns, discounts, and other credits, and records the respective estimated reserve amounts, including a right to return asset when a product is expected to be returned and resold. Historical experience, actual claims, and customer return rights are the key factors used in determining the estimated sales returns, discounts, and other credits. Contract balances The following table provides information about receivables, right of return assets, contract liabilities, refund liabilities, and warranty liabilities from contracts with customers as of September 30, 2018: September 30, 2018 Receivables, which comprises the balance in accounts receivable, net of allowances $ 115,801 Right of return assets, which are included in prepaid expenses and other current assets 1,139 Refund liabilities, which are included in sales return liability 39,195 Warranty liabilities, which are included in sales return liability 4,311 Contract liabilities, which are included in accrued liabilities 439 The current balance of the right of return assets is the estimated amount of inventory to be returned that is expected to be resold. The current balance of contract liabilities primarily relates to the advance consideration received from customers for products for which transfer of control has not yet occurred, and therefore recognition of revenue is deferred until the transfer of control has been completed. The current balance of refund liabilities is the expected amount of estimated sales returns, discounts and other credits from sales that have occurred. The current balance of warranty liabilities is the expected amount of warranty claim returns from sales that have occurred. The following summarizes the activities in the Company’s warranty liabilities for the nine months ended September 30, 2018: Balance as of December 31, 2017 $ 4,189 Additions 9,249 Warranty claims charged (9,125) Foreign currency translation gain (2) Balance as of September 30, 2018 $ 4,311 Practical expedients and policy elections The Company applies the following practical expedients in its application of Topic 606: • The Company does not adjust the transaction price for significant financing components for periods less than one year. • The Company recognizes the incremental costs of obtaining contracts as an expense when incurred if the amortization period of the assets that the Company otherwise would have recognized is one year or less. These costs are included in selling, general, and administrative expenses. • The Company recognizes the cost for shipping and handling as a fulfillment activity after control over products have transferred to the customer. For product sales, the standard shipping terms are FOB shipping point under which revenue is recorded when the product is shipped, net of estimated returns and discounts. Shipping and handling costs are included in cost of sales. • The Company does not disclose the value of unsatisfied performance obligations for (i) contracts with an original expected length of one year or less and (ii) contracts for which the Company recognizes revenue at the amount to which it has the right to invoice for services performed.
Recent Accounting Pronouncements	Recent Accounting Pronouncements In February 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-02, “ Leases ” (“Topic 842”), which modifies the accounting for leases, intending to increase transparency and comparability of organizations by requiring balance sheet presentation of leased assets and increased financial statement disclosure of leasing arrangements. Topic 842 will require entities to recognize a liability for their lease obligations and a corresponding asset representing the right to use the underlying asset over the lease term. Lease obligations are to be measured at their present value and accounted for using the effective interest method. The accounting for the leased asset will differ slightly depending on whether the agreement is deemed to be a financing or operating lease. For financing leases, the leased asset is depreciated on a straight-line basis and depreciation expense is recorded separately from the interest expense in the statements of operations, resulting in higher expense in the earlier part of the lease term. For operating leases, the depreciation and interest expense components are combined, recognized evenly over the term of the lease, and presented as a reduction to operating income. Topic 842 requires that assets and liabilities be presented or disclosed separately, and requires additional disclosure of certain qualitative and quantitative information related to these lease agreements. Topic 842 is effective for annual and interim periods beginning after December 15, 2018. In addition, in July 2018, the FASB issued ASU No. 2018-11 “ Targeted Improvements

Nature of Operations and Basi_3

Nature of Operations and Basis of Presentation (Tables)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The accounts that changed under Topic 606 for the condensed consolidated balance sheet as of September 30, 2018 have been outlined as follows: Condensed consolidated balance sheet changes Reported as of September 30, 2018 Adjustments as of September 30, 2018 Balances Without Adoption of Topic 606 as of September 30, 2018 Accounts receivable, net of allowances $ 115,801 $ (233) $ 115,568 Prepaid expenses and other current assets 6,649 (1,139) 5,510 Sales returns liability 43,506 (6,929) 36,577 Accrued liabilities 8,091 (439) 7,652 Deferred revenue — 439 439 Retained earnings 98,796 5,557 104,353 The accounts that changed under Topic 606 for the condensed consolidated statement of operations for the three months ended September 30, 2018 have been outlined as follows : Condensed consolidated statement of operations changes Reported for the Three Months Ended September 30, 2018 Adjustments for the Three Months Ended September 30, 2018 Amounts Without Adoption of Topic 606 for the Three Months Ended September 30, 2018 Net sales $ 141,087 $ 3,494 $ 144,581 Cost of sales 88,916 161 89,077 The accounts that changed under Topic 606 for the condensed consolidated statement of operations for the nine months ended September 30, 2018 have been outlined as follows: Condensed consolidated statement of operations changes Reported for the Nine Months Ended September 30, 2018 Adjustments for the Nine Months Ended September 30, 2018 Amounts Without Adoption of Topic 606 for the Nine Months Ended September 30, 2018 Net sales $ 371,718 $ 5,544 $ 377,262 Cost of sales 244,297 (13) 244,284
Contract with Customer, Asset and Liability	The following table provides information about receivables, right of return assets, contract liabilities, refund liabilities, and warranty liabilities from contracts with customers as of September 30, 2018: September 30, 2018 Receivables, which comprises the balance in accounts receivable, net of allowances $ 115,801 Right of return assets, which are included in prepaid expenses and other current assets 1,139 Refund liabilities, which are included in sales return liability 39,195 Warranty liabilities, which are included in sales return liability 4,311 Contract liabilities, which are included in accrued liabilities 439
Schedule of Product Warranty Liability	The following summarizes the activities in the Company’s warranty liabilities for the nine months ended September 30, 2018: Balance as of December 31, 2017 $ 4,189 Additions 9,249 Warranty claims charged (9,125) Foreign currency translation gain (2) Balance as of September 30, 2018 $ 4,311
Disaggregation of Revenue	The percentage of net sales related to the Company’s key product lines for the three and nine months ended September 30, 2018 and 2017, was a pproximately as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Screen Protection 63% 57% 56% 52% Power Management 22% 19% 27% 18% Power Cases 5% 12% 6% 18% Keyboards 6% 5% 6% 6% Audio 3% 6% 4% 6% Other 1% 1% 1% 0 % The percentage of net sales related to the Company’s key distribution channels for the three and nine months ended September 30, 2018 and 2017, was approximately as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Indirect channel 88% 90% 88% 89% Website 7% 7% 8% 8% Franchisees 5% 3% 4% 3% The percentage of net sales related to the Company’s key geographic regions for the three and nine months ended September 30, 2018 an d 2017, wa s approximately as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 United States 85% 85% 84% 86% Europe 8% 9% 9% 8% Other 7% 6% 7% 6%

Acquisition of Braven (Tables)

Acquisition of Braven (Tables)	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
Schedule of Business Acquisitions, by Acquisition	The following summarizes the purchase consideration and the cash outflow at the Acquisition Date: September 30, 2018 Net purchase price $ 4,451 Indemnity Holdback (500) Total cash outflow $ 3,951 The net purchase price of $4,451 has been allocated to identifiable assets acquired and liabilities assumed based on their respective fair values. The excess of the purchase price over the fair value of the tangible and intangible assets acquired and liabilities assumed is recorded as goodwill. The following table summarizes the estimates of the fair values of the identifiable assets acquired and liabilities assumed as of the Acquisition Date: September 30, 2018 Accounts receivable $ 650 Inventory 2,320 Property and equipment 368 Amortizable identifiable intangible assets 1,774 Goodwill 298 Accounts payable (959) Total $ 4,451
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination	The amounts assigned to each class of intangible asset and the related weighted average amortization periods are as follows: Intangible Asset Class Weighted Average Amortization Period Patents and technology $ 872 3.1 years Trade names 901 10.0 years Backlog 1 0.5 years Total $ 1,774

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Schedule of inventories	Inventories consisted of the following as of September 30, 2018 and December 31, 2017: September 30, 2018 December 31, 2017 Finished goods $ 78,398 $ 74,734 Raw materials 268 312 Total inventories $ 78,666 $ 75,046

Goodwill and Intangible Assets

Goodwill and Intangible Assets (Tables)	9 Months Ended
	Sep. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Goodwill	The following table summarizes the changes in goodwill during the nine months ended September 30, 2018: Balance as of December 31, 2017 $ 12,272 Increase in connection with BRAVEN Acquisition 298 Balance as of September 30, 2018 $ 12,570
Schedule of changes in gross long-lived intangible assets	The following table summarizes the impairments of gross intangible assets for the nine months ended September 30, 2017: Balance as of December 31, 2016 $ 108,659 Impairment loss on patent (2,777) Balance as of September 30, 2017 $ 105,882
Schedule of long-lived intangible assets, net of amortization	Intangible assets, net of accumulated amortization as of September 30, 2018 and December 31, 2017, were as follows: September 30, 2018 December 31, 2017 Trade names $ 16,340 $ 17,854 Patents and technology 9,537 10,981 Customer relationships 5,752 9,259 Non-compete agreements 868 1,137 Other 8 13 Total intangible assets, net of accumulated amortization $ 32,505 $ 39,244

Debt and Line of Credit (Tables

Debt and Line of Credit (Tables)	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Schedule of long-term debt, net	Long-term debt, net as of September 30, 2018 and December 31, 2017, was as follows: September 30, 2018 December 31, 2017 Line of credit $ 28,000 $ 23,475 Long-term debt, net of deferred loan costs of $0 and $141 — 13,922 Total debt outstanding 28,000 37,397 Current portion of total debt outstanding, net of deferred loan costs of $0 and $141 — 37,397 Total long-term debt outstanding $ 28,000 $ —

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	The grant of restricted stock units with respective weighted-average fair value per share for the three and nine months ended September 30, 2018 and 2017 is summarized as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Granted 14 45 293 479 Weighted average fair value per share $ 15.80 $ 8.65 $ 12.64 $ 6.77
Schedule of Stock-Based Compensation Expense Related To Restricted Stock Units	The following is stock-based compensation expenses related to restricted stock units recorded for the three and nine months ended September 30, 2018 and 2017, which is included as a component of selling, general, and administrative expense on the condensed consolidated statement of operations: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Stock-based compensation expense related to restricted stock units $ 757 $ 899 $ 2,165 $ 2,536

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Schedule of reconciliation of the numerator and denominator used to calculate basic earnings (loss) per share and diluted earnings (loss) per share	The following is a reconciliation of the numerator and denominator used to calculate basic earnings per share and diluted earnings per share for the three and nine months ended September 30, 2018 and 2017: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Net income $ 14,626 $ 9,776 $ 24,871 $ 7,041 Weighted average shares outstanding: Basic 28,241 27,969 28,250 27,996 Dilutive effect of restricted stock units 322 412 390 233 Diluted 28,563 28,381 28,640 28,229 Earnings per share: Basic $ 0.52 $ 0.35 $ 0.88 $ 0.25 Diluted $ 0.51 $ 0.34 $ 0.87 $ 0.25

Treasury Stock (Tables)

Treasury Stock (Tables)	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Class of Treasury Stock	The Company repurchased shares for the three and nine months ended September 30, 2018, presented as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Shares repurchased 201 — 383 234 Cash consideration paid $ 3,091 $ — $ 6,097 $ 1,492 Commissions to brokers included in cash consideration paid $ 8 $ — $ 15 $ 9 Weighted average price per share repurchased $ 15.36 $ — $ 15.90 $ 6.35

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Schedule of future minimum rental payments required under the operating leases	Future minimum rental payments required under the operating leases as of September 30, 2018, were as follows: 2018 $ 567 2019 3,001 2020 2,829 2021 2,450 2022 2,510 Thereafter 4,068 Total operating lease commitments $ 15,425

Concentrations (Tables)

Concentrations (Tables)	9 Months Ended
	Sep. 30, 2018
Risks and Uncertainties [Abstract]
Schedule of concentration risk by accounts receivable	As of September 30, 2018 and December 31, 2017, two separate customers exceeded 10% of the balance of accounts receivable, as follows: September 30, 2018 December 31, 2017 Superior Communications, Inc. (“Superior”) 45% 31% Best Buy Co., Inc. (“Best Buy”) 18% 18%
Schedule of concentration risk by net sales	For the three and nine months ended September 30, 2018 and 2017, Superior and Best Buy accounted for over 10% of net sales, as follows: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 Superior 36% 32% 33% 31% Best Buy 12% 12% 11% 10%
Schedule of percentage of sales by geographic region	The percentage of net sales by geographic region for the three and nine months ended September 30, 2018 and 2017, was approximately: Three Months Ended Nine Months Ended September 30, 2018 September 30, 2017 September 30, 2018 September 30, 2017 United States 85% 85% 84% 86% Europe 8% 9% 9% 8% Other 7% 6% 7% 6%

Nature of Operations and Basi_4

Nature of Operations and Basis of Presentation - Adoption of ASC Topic 606, "Revenue from Contracts with Customers" Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jan. 01, 2018	Dec. 31, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, net of allowances	$ 115,801		$ 123,220
Prepaid expenses and other current assets	6,649		4,547
Sales returns liability	43,506		34,536
Accrued liabilities	8,091		8,168
Deferred revenue	0		315
Retained earnings	98,796		$ 77,805
Calculated under Revenue Guidance in Effect before Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, net of allowances	115,568
Prepaid expenses and other current assets	5,510
Sales returns liability	36,577
Accrued liabilities	7,652
Deferred revenue	439
Retained earnings	104,353
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Accounts receivable, net of allowances	(233)	$ 115
Prepaid expenses and other current assets	(1,139)	1,255
Sales returns liability	(6,929)	5,250
Accrued liabilities	(439)	314
Deferred revenue	439	(314)
Retained earnings	$ 5,557	$ (3,880)

Nature of Operations and Basi_5

Nature of Operations and Basis of Presentation - Accounts changed under Topic 606 (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Jan. 01, 2018	Dec. 31, 2017
Condensed Consolidated Balance Sheet changes
Accounts receivable, net of allowances	$ 115,801		$ 115,801			$ 123,220
Prepaid expenses and other current assets	6,649		6,649			4,547
Sales returns liability	43,506		43,506			34,536
Accrued liabilities	8,091		8,091			8,168
Contract with Customer, Liability, Current	0		0			315
Retained earnings	98,796		98,796			$ 77,805
Condensed Consolidated Statements of Operations changes
Net sales	141,087	$ 134,398	371,718	$ 342,571
Cost of sales	88,916	$ 86,006	244,297	$ 229,749
Calculated under Revenue Guidance in Effect before Topic 606
Condensed Consolidated Balance Sheet changes
Accounts receivable, net of allowances	115,568		115,568
Prepaid expenses and other current assets	5,510		5,510
Sales returns liability	36,577		36,577
Accrued liabilities	7,652		7,652
Contract with Customer, Liability, Current	439		439
Retained earnings	104,353		104,353
Condensed Consolidated Statements of Operations changes
Net sales	144,581		377,262
Cost of sales	89,077		244,284
Accounting Standards Update 2014-09 | Difference between Revenue Guidance in Effect before and after Topic 606
Condensed Consolidated Balance Sheet changes
Accounts receivable, net of allowances	(233)		(233)		$ 115
Prepaid expenses and other current assets	(1,139)		(1,139)		1,255
Sales returns liability	(6,929)		(6,929)		5,250
Accrued liabilities	(439)		(439)		314
Contract with Customer, Liability, Current	439		439		(314)
Retained earnings	5,557		5,557		$ (3,880)
Condensed Consolidated Statements of Operations changes
Net sales	3,494		5,544
Cost of sales	$ 161		$ (13)

Nature of Operations and Basi_6

Nature of Operations and Basis of Presentation - Contract Balances (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Receivables, which comprises the balance in accounts receivable, net of allowances	$ 115,801	$ 123,220
Right of return assets, which are included in prepaid expenses and other current assets	1,139
Refund liabilities, which are included in sales return liability	39,195
Warranty liabilities, which are included in sales return liability	4,311
Contract liabilities, which are included in accrued liabilities	$ 439

Nature of Operations and Basi_7

Nature of Operations and Basis of Presentation - Warranty Liabilities (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning Balance	$ 4,189
Additions	9,249
Warranty claims charged	(9,125)
Foreign currency translation gain	$ (2)

Nature of Operations and Basi_8

Nature of Operations and Basis of Presentation - Percentage of Net Sales by Product (Details) - Product Concentration Risk - Revenue from Contract with Customer	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Screen Protection
Concentration Risk [Line Items]
Percentage of sales	63.00%	57.00%	56.00%	52.00%
Power Management
Concentration Risk [Line Items]
Percentage of sales	22.00%	19.00%	27.00%	18.00%
Power Cases
Concentration Risk [Line Items]
Percentage of sales	5.00%	12.00%	6.00%	18.00%
Keyboards
Concentration Risk [Line Items]
Percentage of sales	6.00%	5.00%	6.00%	6.00%
Audio
Concentration Risk [Line Items]
Percentage of sales	3.00%	6.00%	4.00%	6.00%
Other
Concentration Risk [Line Items]
Percentage of sales	1.00%	1.00%	1.00%	0.00%

Nature of Operations and Basi_9

Nature of Operations and Basis of Presentation - Percentage of Net Sales by Distribution Channel (Details) - Revenue from Contract with Customer - Distribution Channel Concentration Risk	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Indirect channel
Concentration Risk [Line Items]
Percentage of sales	88.00%	90.00%	88.00%	89.00%
Website
Concentration Risk [Line Items]
Percentage of sales	7.00%	7.00%	8.00%	8.00%
Franchisees
Concentration Risk [Line Items]
Percentage of sales	5.00%	3.00%	4.00%	3.00%

Nature of Operations and Bas_10

Nature of Operations and Basis of Presentation - Percentage of Net Sales by Key Geographic Regions (Details) - Revenue from Contract with Customer - Geographic Concentration Risk	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
United States
Concentration Risk [Line Items]
Percentage of sales	85.00%	85.00%	84.00%	86.00%
Europe
Concentration Risk [Line Items]
Percentage of sales	8.00%	9.00%	9.00%	8.00%
Other
Concentration Risk [Line Items]
Percentage of sales	7.00%	6.00%	7.00%	6.00%

Nature of Operations and Bas_11

Nature of Operations and Basis of Presentation - Reclassification of Prior Year Presentation (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accrued liabilities	$ 8,091	$ 8,168
Sales returns liability	$ 43,506	34,536
Reclassification
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accrued liabilities		(2,347)
Sales returns liability		$ 2,347

Acquisition of Braven - Narrati

Acquisition of Braven - Narrative (Details) $ in Thousands	Jul. 20, 2018USD ($)
Restructuring Cost and Reserve [Line Items]
Net purchase price	$ 4,451
Braven
Restructuring Cost and Reserve [Line Items]
Total consideration for acquisition	5,000
Business Combination, Consideration Transferred, Adjustments	(549)
Net purchase price	4,451
Reserve of indemnity claims	$ (500)

Acquisition of Braven - Acquisi

Acquisition of Braven - Acquisition (Details) $ in Thousands	Jul. 20, 2018USD ($)
Restructuring Cost and Reserve [Line Items]
Net purchase price	$ 4,451
Braven
Restructuring Cost and Reserve [Line Items]
Net purchase price	4,451
Indemnity Holdback	(500)
Total cash outflow	$ 3,951

Acquisition of Braven - Purchas

Acquisition of Braven - Purchase Price Allocation (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jul. 20, 2018	Dec. 31, 2017
Business Combinations [Abstract]
Accounts receivable		$ 650
Inventory		2,320
Property and equipment		368
Amortizable identifiable intangible asset		1,774
Goodwill	$ 12,570	298	$ 12,272
Accounts payable		(959)
Total		$ 4,451

Acquisition of Braven - Intangi

Acquisition of Braven - Intangible Asset Class (Details) $ in Thousands	Jul. 20, 2018USD ($)
Finite-Lived Intangible Assets [Line Items]
Intangible Asset Class	$ 1,774
Patents and technology
Finite-Lived Intangible Assets [Line Items]
Intangible Asset Class	$ 872
Weighted Average Amortization Period	3 years 1 month 6 days
Trade names
Finite-Lived Intangible Assets [Line Items]
Intangible Asset Class	$ 901
Weighted Average Amortization Period	10 years
Backlog
Finite-Lived Intangible Assets [Line Items]
Intangible Asset Class	$ 1
Weighted Average Amortization Period	6 months

Inventories - Schedule Of Inven

Inventories - Schedule Of Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Finished goods	$ 78,398	$ 74,734
Raw materials	268	312
Total inventories	$ 78,666	$ 75,046

Inventories - Narrative (Detail

Inventories - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Inventory deposits with third-party manufacturers	$ 2,361	$ 1,906

Goodwill and Intangible Asset_2

Goodwill and Intangible Assets - Goodwill Reconciliation (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018USD ($)
Goodwill [Roll Forward]
Goodwill, Beginning Balance	$ 12,272
Increase in connection with BRAVEN Acquisition	298
Goodwill, Ending Balance	$ 12,570

Goodwill and Intangible Asset_3

Goodwill and Intangible Assets - Narrative (Details) - USD ($)	Jul. 20, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Amortizable identifiable intangible assets	$ 1,774,000
Impairment loss on patent		$ 0	$ 0	$ 0	$ 2,777,000
Reduction of gross carrying amount					2,777,000
Weighted average useful lives of amortizable intangible assets				8 years 1 month 6 days		8 years 2 months 12 days
Canceled Patent
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization written off					818,000
Impairment of finite-lived intangible asset					1,959,000
Finite-lived intangible assets, net			$ 0		$ 0
Braven
Finite-Lived Intangible Assets [Line Items]
Amortizable identifiable intangible assets				$ 1,774,000

Goodwill and Intangible Asset_4

Goodwill and Intangible Assets - Changes in Gross Long-lived Intangible Assets (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Finite-lived Intangible Assets [Roll Forward]
Beginning balance				$ 108,659,000
Impairment loss on patent	$ 0	$ 0	$ 0	(2,777,000)
Ending balance		$ 105,882,000		$ 105,882,000

Goodwill and Intangible Asset_5

Goodwill and Intangible Assets - Long-lived Intangible Assets, Net of Amortization (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, net of accumulated amortization	$ 32,505	$ 39,244
Trade names
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, net of accumulated amortization	16,340	17,854
Patents and technology
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, net of accumulated amortization	9,537	10,981
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, net of accumulated amortization	5,752	9,259
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, net of accumulated amortization	868	1,137
Other
Finite-Lived Intangible Assets [Line Items]
Total intangible assets, net of accumulated amortization	$ 8	$ 13

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Effective tax rate	18.00%	37.00%	17.00%	47.00%

Debt and Line of Credit - Long

Debt and Line of Credit - Long Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Line of credit	$ 28,000	$ 23,475
Long-term debt, net of deferred loan costs of $0 and $141	0	13,922
Total debt outstanding	28,000	37,397
Long-term debt, net of deferred loan costs of $0 and $141	0	37,397
Total long-term debt outstanding	28,000	0
Deferred loan costs, non-current	0	141
Deferred loan costs	$ 0	$ 141

Debt and Line of Credit - Narra

Debt and Line of Credit - Narrative (Details) - USD ($)	Apr. 12, 2018	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Line of Credit Facility [Line Items]
Payments of deferred loan costs		$ 294,000	$ 157,000
Deferred loan costs, current		0		$ 141,000
New Credit Agreement | Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 85,000,000
Loss on deferred loan costs with debt modification	243,000
Capitalized deferred loan costs	521,000
Payments of deferred loan costs	294,000
Deferred loan costs, current	815,000
New Credit Agreement | Letter of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 40,000,000
Minimum | New Credit Agreement | Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, commitment fee percentage	0.175%
Minimum | Base Rate | New Credit Agreement | Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, interest rate	0.25%
Minimum | Eurodollar | New Credit Agreement | Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, interest rate	1.25%
Maximum | New Credit Agreement | Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, commitment fee percentage	0.275%
Maximum | Base Rate | New Credit Agreement | Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, interest rate	1.375%
Maximum | Eurodollar | New Credit Agreement | Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, interest rate	2.375%
Other Assets | New Credit Agreement | Line of Credit
Line of Credit Facility [Line Items]
Deferred loan costs, current		$ 739,000

Stock-Based Compensation (Detai

Stock-Based Compensation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average fair value of restricted stock per share (in usd per share)	$ 15.80	$ 8.65	$ 12.64	$ 6.77
Adjustments to additional paid-in capital			$ 2,723	$ 240
Withholding tax on restricted stock units recorded in accrued wages and wage related expenses			93	0
Selling, general, and administrative expense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 757	$ 899	$ 2,165	$ 2,536
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted (in shares)	14	45	293	479
Restricted stock units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Restricted stock units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			9 months
Restricted stock units | Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock granted (in shares)			182	372

Earnings Per Share - Reconcilia

Earnings Per Share - Reconciliation of Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Net income	$ 14,626	$ 9,776	$ 24,871	$ 7,041
Weighted average shares outstanding:
Basic (in shares)	28,241	27,969	28,250	27,996
Dilutive effect of restricted stock units and warrants (in shares)	322	412	390	233
Diluted (in shares)	28,563	28,381	28,640	28,229
Earnings (loss) per share:
Basic (in usd per share)	$ 0.52	$ 0.35	$ 0.88	$ 0.25
Diluted (in usd per share)	$ 0.51	$ 0.34	$ 0.87	$ 0.25

Earnings Per Share - Narrative

Earnings Per Share - Narrative (Details) - shares shares in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018
Earnings Per Share [Abstract]
Restricted stock (in shares)	65	98

Treasury Stock (Details)

Treasury Stock (Details) - USD ($) $ / shares in Units, shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2015
Equity [Abstract]
Authorized stock repurchase amount						$ 20,000,000
Remaining amount authorized under stock repurchase program	$ 11,461,000		$ 11,461,000		$ 17,558,000
Shares repurchased	201	0	383	234
Cash consideration paid for purchase of common stock	$ 3,091,000	$ 0	$ 6,097,000	$ 1,492,000
Commissions paid to brokers	$ 8,000	$ 0	$ 15,000	$ 9,000
Weighted average price per share (in dollars per share)	$ 15.36	$ 0	$ 15.90	$ 6.35

Commitments and Contingencies -

Commitments and Contingencies - Future Minimum Rental Payments (Details) $ in Thousands	Sep. 30, 2018USD ($)
Commitments and Contingencies Disclosure [Abstract]
Remaining 2,018	$ 567
2,019	3,001
2,020	2,829
2,021	2,450
2,022	2,510
Thereafter	4,068
Total operating lease commitments	$ 15,425

Commitments and Contingencies_2

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Rent expense	$ 768	$ 736	$ 2,314	$ 2,179
Civil penalty			$ 75

Concentrations - Concentration

Concentrations - Concentration of Credit Risk and Concentration of Net Sales (Details) - Customer Concentration Risk	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Accounts Receivable | Superior
Concentration Risk [Line Items]
Concentration risk percentage			45.00%		31.00%
Accounts Receivable | Best Buy
Concentration Risk [Line Items]
Concentration risk percentage			18.00%		18.00%
Revenue from Contract with Customer | Superior
Concentration Risk [Line Items]
Concentration risk percentage	36.00%	32.00%	33.00%	31.00%
Revenue from Contract with Customer | Best Buy
Concentration Risk [Line Items]
Concentration risk percentage	12.00%	12.00%	11.00%	10.00%

Concentrations - Concentratio_2

Concentrations - Concentration of Net Sales, By Geographical Region (Details) - Geographic Concentration Risk - Revenue from Contract with Customer	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
United States
Concentration Risk [Line Items]
Percentage of sales	85.00%	85.00%	84.00%	86.00%
Europe
Concentration Risk [Line Items]
Percentage of sales	8.00%	9.00%	9.00%	8.00%
Other
Concentration Risk [Line Items]
Percentage of sales	7.00%	6.00%	7.00%	6.00%