Restatement of Previously Issued Financial Statements - Statements of Operations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenue		$ 120,846	$ 126,642
Cost of sales		95,806	99,940
Gross profit		25,040	26,702
Selling, general and administrative expenses		24,213	26,246
Amortization of intangible assets		324	345
Operating profit		503	111
Interest expense, net		603	663
Other expense (income), net		1,702	(197)
Income (loss) from continuing operations before income taxes		(1,802)	(355)
Income tax expense (benefit)		(448)	307
Net income (loss) from continuing operations		(1,354)	(662)
Income (loss) from discontinued operations, net of tax		22,866	(2,723)
Net income (loss)	[1]	$ 21,512	$ (3,385)
Earnings Per Share, Basic and Diluted [Abstract]
Basic and diluted earnings (loss) per share, continuing operations (in usd per share)		$ (0.10)	$ (0.05)
Basic and diluted earnings (loss) per share, discontinued operations (in usd per share)		1.68	(0.20)
Basic and diluted earnings per share (in dollars per share)		$ 1.58	$ (0.25)
Basic weighted average shares outstanding (in shares)		13,625	13,786
Diluted weighted average shares outstanding (in shares)		13,625	13,786
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenue			$ 145,377
Cost of sales			110,654
Gross profit			34,723
Selling, general and administrative expenses			36,507
Amortization of intangible assets			345
Operating profit			(2,129)
Interest expense, net			746
Other expense (income), net			(332)
Income (loss) from continuing operations before income taxes			(2,543)
Income tax expense (benefit)			(782)
Net income (loss) from continuing operations			(1,761)
Income (loss) from discontinued operations, net of tax			0
Net income (loss)			$ (1,761)
Earnings Per Share, Basic and Diluted [Abstract]
Basic and diluted earnings (loss) per share, continuing operations (in usd per share)			$ (0.13)
Basic and diluted earnings (loss) per share, discontinued operations (in usd per share)			0.00
Basic and diluted earnings per share (in dollars per share)			$ (0.13)
Basic weighted average shares outstanding (in shares)			13,786
Diluted weighted average shares outstanding (in shares)			13,786
Restatement Impacts
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenue			$ 518
Cost of sales			(65)
Gross profit			583
Selling, general and administrative expenses			1,972
Amortization of intangible assets			0
Operating profit			(1,389)
Interest expense, net			0
Other expense (income), net			144
Income (loss) from continuing operations before income taxes			(1,533)
Income tax expense (benefit)			91
Net income (loss) from continuing operations			(1,624)
Income (loss) from discontinued operations, net of tax			0
Net income (loss)			$ (1,624)
Earnings Per Share, Basic and Diluted [Abstract]
Basic and diluted earnings (loss) per share, continuing operations (in usd per share)			$ (0.12)
Basic and diluted earnings (loss) per share, discontinued operations (in usd per share)			0.00
Basic and diluted earnings per share (in dollars per share)			$ (0.12)
Basic weighted average shares outstanding (in shares)			0
Diluted weighted average shares outstanding (in shares)			0
As Restated
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenue			$ 145,895
Cost of sales			110,589
Gross profit			35,306
Selling, general and administrative expenses			38,479
Amortization of intangible assets			345
Operating profit			(3,518)
Interest expense, net			746
Other expense (income), net			(188)
Income (loss) from continuing operations before income taxes			(4,076)
Income tax expense (benefit)			(691)
Net income (loss) from continuing operations			(3,385)
Income (loss) from discontinued operations, net of tax			0
Net income (loss)			$ (3,385)
Earnings Per Share, Basic and Diluted [Abstract]
Basic and diluted earnings (loss) per share, continuing operations (in usd per share)			$ (0.25)
Basic and diluted earnings (loss) per share, discontinued operations (in usd per share)			0.00
Basic and diluted earnings per share (in dollars per share)			$ (0.25)
Basic weighted average shares outstanding (in shares)			13,786
Diluted weighted average shares outstanding (in shares)			13,786
Recasting Impacts
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Revenue			$ (19,253)
Cost of sales			(10,649)
Gross profit			(8,604)
Selling, general and administrative expenses			(12,233)
Amortization of intangible assets			0
Operating profit			3,629
Interest expense, net			(83)
Other expense (income), net			(9)
Income (loss) from continuing operations before income taxes			3,721
Income tax expense (benefit)			998
Net income (loss) from continuing operations			2,723
Income (loss) from discontinued operations, net of tax			(2,723)
Net income (loss)			$ 0
Earnings Per Share, Basic and Diluted [Abstract]
Basic and diluted earnings (loss) per share, continuing operations (in usd per share)			$ 0.20
Basic and diluted earnings (loss) per share, discontinued operations (in usd per share)			(0.20)
Basic and diluted earnings per share (in dollars per share)			$ 0.00
Basic weighted average shares outstanding (in shares)			0
Diluted weighted average shares outstanding (in shares)			0

[1] As Restated