Summary of Significant Accounting Policies - Summary of Impacts of ASC 842 on Condensed Consolidated Financial Statements (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Jan. 01, 2019	Dec. 31, 2018
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Net sales	$ 125,480	$ 135,219	$ 398,880	$ 428,347
Cost of sales	85,894	93,128	266,799	291,150
Gross profit	39,586	42,091	132,081	137,197
Selling, general and administrative expenses	31,515	34,381	102,792	104,360
(Gain) loss on disposal of fixed assets	11	218	(87)	(96)
Impairment charges	0	0	916	308
Operating income (loss)	8,060	(25,839)	28,460	(706)
Interest expense, net	(993)	(883)	(3,059)	(3,835)
Income (loss) from continuing operations before income taxes	7,067	(26,722)	25,401	(4,541)
Income tax expense	1,848	(5,585)	6,933	233
Income (loss) from continuing operations	5,219	$ (21,137)	18,468	$ (4,774)
Assets
Right of use asset - operating leases	6,384		6,384			$ 0
Deferred income taxes	6,074		6,074			5,270
Liabilities
Other current liabilities	18,035		18,035			16,701
Operating lease liability - short-term	2,215		2,215			0
Operating lease liability - long-term	4,402		4,402			0
Other liabilities	22,706		22,706			19,794
Shareholders’ Equity
Retained deficit	(136,192)		(136,192)			$ (141,187)
ASU 2016-02 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Net sales	125,480		398,880
Cost of sales	85,894		266,799
Gross profit	39,586		132,081
Selling, general and administrative expenses	31,515		102,792
(Gain) loss on disposal of fixed assets	11		(87)
Impairment charges			916
Operating income (loss)	8,060		28,460
Interest expense, net	993		3,059
Income (loss) from continuing operations before income taxes	7,067		25,401
Income tax expense	1,848		6,933
Income (loss) from continuing operations	5,219		18,468
Assets
Right of use asset - operating leases	6,384		6,384		$ 5,900
Deferred income taxes	6,074		6,074
Liabilities
Other current liabilities	18,035		18,035
Operating lease liability - short-term	2,215		2,215
Operating lease liability - long-term	4,402		4,402
Other liabilities	22,706		22,706
Shareholders’ Equity
Retained deficit	(136,192)		(136,192)
Adjustments [Member] | ASU 2016-02 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Selling, general and administrative expenses	(34)		(101)
Operating income (loss)	34		101
Income (loss) from continuing operations before income taxes	34		101
Income tax expense	9		27
Income (loss) from continuing operations	25		74
Assets
Right of use asset - operating leases	(6,384)		(6,384)
Deferred income taxes	306		306
Liabilities
Other current liabilities	233		233
Operating lease liability - short-term	(2,215)		(2,215)
Operating lease liability - long-term	(4,402)		(4,402)
Other liabilities	1,135		1,135
Shareholders’ Equity
Retained deficit	(829)		(829)
Balances Without Adoption of ASC 842 [Member] | ASU 2016-02 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Net sales	125,480		398,880
Cost of sales	85,894		266,799
Gross profit	39,586		132,081
Selling, general and administrative expenses	31,481		102,691
(Gain) loss on disposal of fixed assets	11		(87)
Impairment charges			916
Operating income (loss)	8,094		28,561
Interest expense, net	993		3,059
Income (loss) from continuing operations before income taxes	7,101		25,502
Income tax expense	1,857		6,960
Income (loss) from continuing operations	5,244		18,542
Assets
Deferred income taxes	6,380		6,380
Liabilities
Other current liabilities	18,268		18,268
Other liabilities	23,841		23,841
Shareholders’ Equity
Retained deficit	$ (137,021)		$ (137,021)