Summary of Significant Accounting Policies - Summary of Impacts of ASC 842 on Consolidated Financial Statements (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2019
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Net sales	$ 116,818	$ 125,480	$ 134,285	$ 139,115	$ 138,388	$ 135,219	$ 140,560	$ 152,568	$ 515,698	$ 566,735	$ 547,043
Cost of sales									344,386	387,442	389,590
Gross profit	39,231	39,586	46,936	45,559	42,096	42,091	47,991	47,115	171,312	179,293	157,453
Impairment charges									916	308	544
Operating income	8,806	8,060	10,182	10,218	7,033	(25,839)	13,111	12,022	37,266	6,327	24,888
Interest expense, net									(4,083)	(4,938)	(7,292)
Income from continuing operations before income taxes									33,183	1,389	15,708
Income tax expense									8,968	3,037	4,864
Income (loss) from continuing operations	5,747	$ 5,219	$ 6,606	$ 6,643	3,126	$ (21,137)	$ 8,608	$ 7,755	24,215	(1,648)	$ 10,844
Assets
Right of use asset - operating leases	5,901				0				5,901	0
Deferred income taxes	5,807				5,270				5,807	5,270
Liabilities
Other current liabilities	18,324				16,701				18,324	16,701
Operating lease liability - short-term	2,057				0				2,057	0
Operating lease liability - long-term	4,074				0				4,074	0
Other liabilities	22,582				19,794				22,582	19,794
Shareholders’ Equity
Retained deficit	(135,117)				$ (141,187)				(135,117)	$ (141,187)
ASU 2016-02 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Net sales									515,698
Cost of sales									344,386
Gross profit									171,312
Selling, general and administrative expenses									133,130
Impairment charges									916
Operating income									37,266
Interest expense, net									4,083
Income from continuing operations before income taxes									33,183
Income tax expense									8,968
Income (loss) from continuing operations									24,215
Assets
Right of use asset - operating leases	5,901								5,901			$ 5,900
Deferred income taxes	5,807								5,807
Liabilities
Other current liabilities	18,324								18,324
Operating lease liability - short-term	2,057								2,057
Operating lease liability - long-term	4,074								4,074
Other liabilities	22,582								22,582
Shareholders’ Equity
Retained deficit	(135,117)								(135,117)
Adjustments [Member] | ASU 2016-02 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Selling, general and administrative expenses									(135)
Operating income									135
Income from continuing operations before income taxes									135
Income tax expense									36
Income (loss) from continuing operations									99
Assets
Right of use asset - operating leases	(5,901)								(5,901)
Deferred income taxes	298								298
Liabilities
Other current liabilities	230								230
Operating lease liability - short-term	(2,057)								(2,057)
Operating lease liability - long-term	(4,074)								(4,074)
Other liabilities	1,102								1,102
Shareholders’ Equity
Retained deficit	(804)								(804)
Balances Without Adoption of ASC 842 [Member] | ASU 2016-02 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Net sales									515,698
Cost of sales									344,386
Gross profit									171,312
Selling, general and administrative expenses									132,995
Impairment charges									916
Operating income									37,401
Interest expense, net									4,083
Income from continuing operations before income taxes									33,318
Income tax expense									9,004
Income (loss) from continuing operations									24,314
Assets
Deferred income taxes	6,105								6,105
Liabilities
Other current liabilities	18,554								18,554
Other liabilities	23,684								23,684
Shareholders’ Equity
Retained deficit	$ (135,921)								$ (135,921)