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Stockholders' Equity - Schedule of Share Based Compensation Restricted Stock and Unvested Restricted Stock Award Activity (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Income tax benefit	$ (164,000)	$ (444,000)	$ (662,000)
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares of restricted stock granted	469,465	850,771	584,959
Total fair value of restricted stock granted	$ 4,277,000	$ 6,652,000	$ 4,200,000
Weighted-average fair value per restricted stock granted during year	$ 9.11	$ 7.82	$ 7.18
Income tax benefit	$ (1,659,000)	$ (1,157,000)	$ (156,000)
Total weighted-average remaining vesting period in years	1 year 11 months 12 days	2 years 4 months 28 days	3 years
Total fair value of restricted stock vested during the year	$ 3,124,000	$ 2,579,000	$ 405,000
Unvested restricted stock outstanding at beginning of year	1,038,290
Vested, Shares	(318,282)
Unvested restricted stock outstanding at end of year	1,189,473	1,038,290
Unvested restricted stock outstanding at beginning period, weighted-average grand date fair value	$ 8.60
Weighted average grant date fair value	9.11	$ 7.82	$ 7.18
Vested, weighted-average grant date fair value	9.81
Unvested restricted stock outstanding at end of year, Weighted-average granted date fair value	$ 7.51	$ 8.60
Restricted Stock [Member] | Cost of Sales [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 312,000	$ 240,000
Restricted Stock [Member] | SG&A [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 3,987,000	$ 2,773,000	$ 405,000

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- Definition

Weighted average remaining vesting period in years.

+ References

No definition available.

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Share-based compensation arrangement by share based payment award restricted stock vested in period fair value.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Section 50
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- Definition

The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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