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Stockholders' Equity - Stock Incentive Plans - Additional Information (Details) - USD ($)		3 Months Ended		6 Months Ended
	May 02, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock options granted	0
Shares available for grant	0
Stock option compensation (income) expense				$ (40,000)	$ 46,000
Restricted stock compensation (income) expense				(81,000)	64,000
Stock Options [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option compensation (income) expense		$ (47,000)	$ 24,000	(40,000)	46,000
Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock compensation (income) expense		$ (94,000)	$ 6,000	$ (81,000)	$ 100,000

X

- Definition

Restricted stock compensation (income) expense.

+ References

No definition available.

+ Details

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- Definition

Stock option compensation (income) expense.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

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